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2018 United States Senate elections

{{Short description|none}}

{{Use mdy dates|date=February 2020}}

{{Infobox election

| election_name = 2018 United States Senate elections

| country = United States

| flag_year = 1960

| type = legislative

| ongoing = no

| previous_election = 2016 United States Senate elections

| previous_year = 2016

| election_date = November 6, 2018
November 27 (Mississippi runoff)

| next_election = 2020 United States Senate elections

| next_year = 2020

| seats_for_election = 35 of the 100 seats in the United States Senate

| majority_seats = 51

| image_size = 160x180px

| 1blank = Seats up

| 2blank = Races won

| party1 = Republican Party (US)

| image1 = Mitch McConnell portrait 2016 (3x4a).jpg

| leader1 = Mitch McConnell

| leader_since1 = January 3, 2007

| leaders_seat1 = Kentucky

| seats_before1 = 51

| seats_after1 = 53

| seat_change1 = {{Increase}} 2

| popular_vote1 = 34,687,875

| percentage1 = 38.7%

| 1data1 = 9

| 2data1 = 11

| party2 = Democratic Party (US)

| image2 = Chuck Schumer official photo (3x4a).jpg

| leader2 = Chuck Schumer

| leader_since2 = January 3, 2017

| leaders_seat2 = New York

| seats_before2 = 47

| seats_after2 = 45

| seat_change2 = {{Decrease}} 2

| popular_vote2 = 52,224,867{{Efn|Total of official results for Democratic candidates.}}{{Efn|name=California|Both general election candidates in California were members of the Democratic Party, having won the top 2 positions in the nonpartisan blanket primary (established by the 2010 California Proposition 14), so all 11.1 million votes in California were counted for Democrats, as tabulated by the Clerk of the House.{{Cite news | url=https://www.washingtonpost.com/politics/2018/11/07/some-democrats-are-complaining-about-senate-popular-vote-its-still-not-thing | title=Some Democrats are complaining about the "Senate popular vote." It's still not a thing. | first=Aaron | last=Blake | newspaper=The Washington Post | date=November 7, 2018 | access-date=November 7, 2018}} In 2012, the last time a Republican candidate for the U.S. Senate appeared on the ballot in California, 12.6 million votes were cast, of which 4.7 million, or 38%, were cast for the Republican candidate.}}

| percentage2 = 58.2%

| 1data2 = 24

| 2data2 = 22

| party4 = Independent (US)

| seats_before4 = 2{{efn|name=independent|Both independent senators — Angus King and Bernie Sanders — have caucused with the Democratic Party since joining the Senate.}}

| seats_after4 = 2

| seat_change4 = {{Steady}}

| popular_vote4 = 808,370{{Efn|Total of official results for candidates labeled "Independent".}}

| percentage4 = 0.9%

| previous_seat_election = 2012 United States Senate elections

| previous_seat_year = 2012

| next_seat_election = 2024 United States Senate elections

| next_seat_year = 2024

| 1data4 = 2

| 2data4 = 2

| map_image = {{2018 United States Senate elections imagemap}}

| map_size = 320px

| map_caption = Results of the elections:
{{Legend0|#0671B0|Democratic gain}} {{Legend0|#CA0120|Republican gain}}
{{Legend0|#92C5DE|Democratic hold}} {{Legend0|#F48882|Republican hold}}
{{Legend0|#999999|Independent hold}}
{{Legend0|#D3D3D3|No election}}

Rectangular inset (Minn. & Miss.): both seats up for election

| title = Majority Leader

| before_election = Mitch McConnell

| before_party = Republican Party (US)

| after_election = Mitch McConnell

| after_party = Republican Party (US)

}}

The 2018 United States Senate elections were held on November 6, 2018. Among the 100 seats, the 33 of Class 1 were contested in regular elections while 2 others were contested in special elections due to Senate vacancies in Minnesota and Mississippi. The regular election winners were elected to 6-year terms running from January 3, 2019, to January 3, 2025. Senate Democrats had 26 seats up for election (including the seats of 2 Independents who caucus with them), while Senate Republicans had 9 seats up for election.

To maintain their working majority of 50 senators and their party's vice president's tie-breaking vote, Republicans could only afford a net loss of 1 seat in these elections. The Republicans had a 52–48 majority after the 2016 elections, but they lost a seat in Alabama after Jeff Sessions resigned to become U.S. attorney general and Doug Jones, a Democrat, won in the subsequent special election. 3 Republican-held seats were open as a result of retirements in Tennessee, Utah, and Arizona. Although every Democratic incumbent ran for re-election, Democrats faced an extremely unfavorable map, defending 26 seats, of which 10 were in states won by Donald Trump in the 2016 presidential election, and 5 of those where Trump had won by more than 10%. Republicans, however, only had to defend 9 seats, of which only 1 was in a state won by Hillary Clinton in 2016.

The Republicans increased their majority by defeating Democratic incumbents in Florida, Indiana, Missouri, and North Dakota, and holding the open seats in Tennessee and Utah. Democrats won 2 Republican-held seats, defeating an incumbent in Nevada and winning the open seat in Arizona. This was the first time Republicans gained Class 1 Senate seats since 1994.

The results for this election cycle were the only significant gains made by the Republicans in what was otherwise characterized as a "blue wave" election. The Republican gains in the Senate and the Democratic gains in the House marked the first midterm election cycle since 1970 in which the president's party made net gains in one chamber of Congress while suffering net losses in the other,{{cite news |last1=Kane |first1=Paul |title=Stark political divide points to a split decision in mid-term elections |url=https://www.washingtonpost.com/powerpost/stark-political-divide-points-to-a-split-decision-in-midterm-elections/2018/10/12/d98bbc60-c686-11e8-b1ed-1d2d65b86d0c_story.html |access-date=1 June 2020 |newspaper=The Washington Post |date=13 October 2018 |ref=splitdecision}} which also occurred in 1914, 1962, and 2022. This was also the first midterm election cycle since 2002 in which any incumbents of the non-presidential party lost re-election. The number of defeated non-presidential party incumbents (4) was the most since the 1934 mid-terms.{{Cite web | url=https://www.vox.com/2018/11/6/18068792/midterm-election-results-winners-and-losers | title=4 winners and 2 losers from the 2018 mid-term elections | publisher=Vox | author=Matthew Yglesias | date=November 7, 2018 | access-date=November 8, 2018}} To date, this remains the last time that Democrats won a Senate election in Montana, Ohio, and West Virginia.

Partisan composition

Among the 33 Class 1 Senate seats up for regular election in 2018, twenty-three were held by Democrats, two by independents who caucused with the Senate Democrats and eight by Republicans. Class Two seats in Minnesota and Mississippi held by interim appointees were also up for election; both incumbent appointees sought election to finish their unexpired terms.

Democrats targeted Republican-held Senate seats in Arizona (open seat) and Nevada. Seats in Texas,{{Cite web | url=https://www.texastribune.org/2017/01/06/orourke-very-likely-challenge-cruz-2018 | title=Rep. Beto O'Rourke "very likely" to run for Sen. Ted Cruz's seat in 2018 | last=Livingston | first=Abby | date=January 6, 2017 | website=The Texas Tribune | access-date=January 19, 2017}} Mississippi (at least one of the two seats) and Tennessee (open seat){{Cite web | url=https://www.cnbc.com/2017/09/26/republican-sen-bob-corker-of-tennessee-will-not-seek-re-election.html | title=Republican Sen. Bob Corker of Tennessee will not seek re-election, long-shot opportunity for Democrats | last=Pramuk | first=Jacob | date=September 26, 2017 | publisher=CNBC | access-date=September 26, 2017}} were also competitive for the Democrats. Republicans targeted Democratic-held seats in Indiana, Missouri, Montana, North Dakota and West Virginia, all of which were won by Republicans in both the 2012 and 2016 presidential elections.{{Cite news | last=Kondik | first=Kyle | title=Senate 2014 and Beyond | url=http://www.centerforpolitics.org/crystalball/2018-senate | access-date=September 19, 2013 | newspaper=Sabato's Crystal Ball | date=July 25, 2013}} Seats in Florida, Ohio, Pennsylvania, Wisconsin and Michigan, all of which were won by Obama in 2008 and 2012 but by Trump in 2016, were also targeted by Republicans.{{Cite news | last1=Dick | first1=Jason | title=Senate Democrats, 2018 Math Is Not Your Friend | url=http://www.rollcall.com/news/home/for-democrats-2018-senate-math-is-daunting | access-date=August 2, 2016 | publisher=Roll Call | date=January 20, 2016}}{{Cite news | last=Fram | first=Alan | title=Several Democrats facing 2018 re-election are from states Trump carried | url=https://www.pbs.org/newshour/rundown/several-democrats-facing-2018-re-election-states-trump-carried | access-date=November 12, 2016 | newspaper=PBS NewsHour | date=November 11, 2016}} The Democratic-held seat in New Jersey was also considered unexpectedly competitive due to corruption allegations surrounding the Democratic incumbent.

The map was widely characterized as extremely unfavorable to Democrats, as Democrats were defending 26 states while Republicans were defending nine. Of these seats, Democrats were defending ten in states won by Donald Trump in the 2016 presidential election, while Republicans were only defending one seat in a state won by Hillary Clinton in 2016.{{Cite news|url=https://www.reuters.com/article/us-usa-election-democrats-explainer-idUSKCN1L920M|title=Democrats face 'almost impossible map' to retake U.S. Senate|date=August 24, 2018|work=Reuters|access-date=December 22, 2018|language=en}}{{Cite news|url=https://www.theguardian.com/us-news/2018/nov/08/democrats-republicans-senate-majority-minority-rule|title=Democrats got millions more votes – so how did Republicans win the Senate?|last=Siddiqui|first=Sabrina|date=November 8, 2018|work=The Guardian|access-date=December 22, 2018|language=en-GB|issn=0261-3077}}{{Cite web|url=https://thehill.com/homenews/senate/415627-schumer-2020-doesnt-bode-well-for-gop/|title=Schumer: 2020 'doesn't bode well' for GOP|last=Conradis|first=Brandon|date=November 7, 2018|website=TheHill|language=en|access-date=December 22, 2018}} According to FiveThirtyEight, Democrats faced the most unfavorable Senate map in 2018 that any party has ever faced in any election.{{Cite news | url=https://fivethirtyeight.com/features/the-congressional-map-is-historically-biased-toward-the-gop | archive-url=https://web.archive.org/web/20170807115524/https://fivethirtyeight.com/features/the-congressional-map-is-historically-biased-toward-the-gop/ | url-status=dead | archive-date=August 7, 2017 | title=The Congressional Map Has A Record-Setting Bias Against Democrats | last=Wasserman | first=David | date=August 7, 2017 | work=FiveThirtyEight | access-date=September 13, 2018 }}{{Cite news | url=https://fivethirtyeight.com/features/republicans-are-favorites-in-the-senate-but-democrats-have-two-paths-to-an-upset | archive-url=https://web.archive.org/web/20180914022256/https://fivethirtyeight.com/features/republicans-are-favorites-in-the-senate-but-democrats-have-two-paths-to-an-upset/ | url-status=dead | archive-date=September 14, 2018 | title=Republicans Are Favorites In The Senate, But Democrats Have Two Paths To An Upset | date=September 12, 2018 | work=FiveThirtyEight | access-date=September 13, 2018 }}

Results summary

class=wikitable style="text-align:center"
colspan=3 rowspan=2 | Parties

| style="background-color:{{party color|Democratic Party (US)}}" |

| style="background-color:{{party color|Republican Party (US)}}" |

| style="background-color:{{party color|Independent (US)}}" |

| style="background-color:{{party color|Libertarian Party (US)}}" |

| style="background-color:{{party color|Green Party (US)}}" |

| style="background-color:{{party color|Other Party (US)}}" |

! rowspan=2 | Total

Democratic

! Republican

! Independent

! Libertarian

! Green

! Other

colspan=3 | Last elections (2016)

| 46

| {{Party shading/Republican}} | 52

| 2

| 0

| 0

| 0

! 100

colspan=3 | Before these elections

| 47

| {{Party shading/Republican}} | 51

| 2

| 0

| 0

| 0

! 100

colspan=3 style="background:#bbb" | Not up

| 23

| {{Party shading/Republican}} | 42

| 0

| —

| —

| —

! 65

rowspan=2 style="background:#bbb" |

! colspan=2 | {{Small|Class 2 (2014→2020)}}

| 11

| {{Party shading/Republican}} | 20

| 0

| —

| —

| —

! 31

colspan=2 | {{Small|Class 3 (2016→2022)}}

| 12

| {{Party shading/Republican}} | 22

| 0

| —

| —

| —

! 34

colspan=100 |
colspan=3 style="background:#bbb" | Up

| {{Party shading/Democratic}} | 24

| 9

| 2

| —

| —

| —

! 35

rowspan=23 style="background:#bbb" |

! colspan=2 | {{Small|Class 1 (2012→2018)}}

| {{Party shading/Democratic}} | 23

| 8

| 2

| —

| —

| —

! 33

colspan=2 | {{Small|Special: Class 2}}

| 1

| 1

| 0

| —

| —

| —

! 2

colspan=100 |
colspan=9 style="background:#bbb" | Regular elections
colspan=2 style="background:#ccc" | Incumbent retired

| 0

| {{Party shading/Republican}} | 3

| 0

| —

| —

| —

! 3

rowspan=3 |

! {{Small|Held by same party}}

| —

| {{Party shading/Republican}} | 2

| —

| —

| —

| —

! 2

{{Small|Replaced by other party}}

| colspan=2 {{Party shading/Democratic}} | {{Decrease}} 1 Republican replaced by {{Increase}} 1 Democrat

| {{Steady}}

| {{Steady}}

| {{Steady}}

| {{Steady}}

! 1

{{Small|Result}}

! 1

!{{Party shading/Republican}} | 2

! 0

! 0

! 0

! 0

! 3

colspan=2 style="background:#ccc" | Incumbent ran

| {{Party shading/Democratic}} | 23

| 5

| 2

| —

| —

| —

! 30

rowspan=3 |

! {{Small|Won re-election}}

| {{Party shading/Democratic}} | 19

| 4

| 2

| —

| —

| —

! 25

{{Small|Lost re-election}}

| colspan=2 {{Party shading/Republican}} | {{Decrease}} 1 Republican replaced by {{Increase}} 1 Democrat
{{Decrease}} 4 Democrats replaced by {{Increase}} 4 Republicans

| {{Steady}}

| {{Steady}}

| {{Steady}}

| {{Steady}}

! 5

{{Small|Result}}

! {{Party shading/Democratic}} | 20

! 8

! 2

! 0

! 0

! 0

! 30

colspan=100 |
colspan=9 style="background:#bbb" | Special elections
colspan=2 style="background:#ccc" | Appointee ran

| 1

| 1

| —

| —

| —

| —

! 2

rowspan=2 |

! {{Small|Appointee elected}}

| 1

| 1

| —

| —

| —

| —

! 2

{{Small|Result}}

! 1

! 1

! 0

! 0

! 0

! 0

! 2

colspan=100 |
colspan=2 | Total elected

! {{Party shading/Democratic}} | 22

! 11

! 2

! 0

! 0

! 0

! 35

colspan=2 | Net gain/loss

| {{Decrease}} 2

| {{Party shading/Republican}} | {{Increase}} 2

| {{Steady}}

| {{Steady}}

| {{Steady}}

| {{Steady}}

! 2

colspan=100 |
colspan=2 style="background:#ccc" | Nationwide vote

| {{Party shading/Democratic}} | 52,224,867

| 34,722,926

| 808,370

| 590,051

| 200,599

| 1,262,765

! 90,473,222

! Share

| {{Party shading/Democratic}} | 58.17%

| 38.67%

| 0.90%

| 0.66%

| 0.22%

| 1.41%

! 100%

colspan=100 |
colspan=3 style="background:#ccc" | Result

! 45

! {{Party shading/Republican}} | 53

! 2

! 0

! 0

! 0

! 100

Source: Clerk of the U.S. House of Representatives.{{Cite web |last=Clerk of the U.S. House of Representatives |date=2019-02-28 |title=Statistics of the Congressional Election of November 6, 2018 |url=http://clerk.house.gov/member_info/electioninfo/2018election.pdf |page=57 |publisher=U.S. Government Printing Office}}

Change in composition

Each block represents one of the one hundred seats in the Senate. "D#" is a Democratic senator, "I#" is an independent senator and "R#" is a Republican senator. Arranged so parties are separated and a majority is clear by crossing the middle.

= Before the elections =

Each block indicates an incumbent senator's actions going into the election. Some "Ran" for re-election, some "Retired," and those without a note were not up for election this cycle. Before the elections, Republicans held 51 seats, Democrats held 47, and Independents held 2.

After the 2017 Senate special election in Alabama on the start of the second session in the 115th Congress.

class="wikitable" style="text-align:center;"
width=10% {{Party shading/Democratic/active}} | D{{Sub|1}}
{{Small|Ala.}}
{{Small|Gain}}

| width=10% {{Party shading/Democratic}} | D{{Sub|2}}

| width=10% {{Party shading/Democratic}} | D{{Sub|3}}

| width=10% {{Party shading/Democratic}} | D{{Sub|4}}

| width=10% {{Party shading/Democratic}} | D{{Sub|5}}

| width=10% {{Party shading/Democratic}} | D{{Sub|6}}

| width=10% {{Party shading/Democratic}} | D{{Sub|7}}

| width=10% {{Party shading/Democratic}} | D{{Sub|8}}

| width=10% {{Party shading/Democratic}} | D{{Sub|9}}

| width=10% {{Party shading/Democratic}} | D{{Sub|10}}

{{Party shading/Democratic}} | D{{Sub|20}}

| {{Party shading/Democratic}} | D{{Sub|19}}

| {{Party shading/Democratic}} | D{{Sub|18}}

| {{Party shading/Democratic}} | D{{Sub|17}}

| {{Party shading/Democratic}} | D{{Sub|16}}

| {{Party shading/Democratic}} | D{{Sub|15}}

| {{Party shading/Democratic}} | D{{Sub|14}}

| {{Party shading/Democratic}} | D{{Sub|13}}

| {{Party shading/Democratic}} | D{{Sub|12}}

| {{Party shading/Democratic}} | D{{Sub|11}}

{{Party shading/Democratic}} | D{{Sub|21}}

| {{Party shading/Democratic}} | D{{Sub|22}}

| {{Party shading/Democratic}} | D{{Sub|23}}

| {{Party shading/Democratic/active}} | D{{Sub|24}}
{{Small|Calif.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|25}}
{{Small|Conn.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|26}}
{{Small|Del.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|27}}
{{Small|Fla.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|28}}
{{Small|Hawaii}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|29}}
{{Small|Ind.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|30}}
{{Small|Md.}}
{{Small|Ran}}

{{Party shading/Democratic/active}} | D{{Sub|40}}
{{Small|N.D.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|39}}
{{Small|N.Y.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|38}}
{{Small|N.M.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|37}}
{{Small|N.J.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|36}}
{{Small|Mont.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|35}}
{{Small|Mo.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|34}}
{{Small|Minn. (sp)}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|33}}
{{Small|Minn. (reg)}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|32}}
{{Small|Mich.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|31}}
{{Small|Mass.}}
{{Small|Ran}}

{{Party shading/Democratic/active}} | D{{Sub|41}}
{{Small|Ohio}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|42}}
{{Small|Penn.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|43}}
{{Small|R.I.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|44}}
{{Small|Va.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|45}}
{{Small|Wash.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|46}}
{{Small|W.Va.}}
{{Small|Ran}}

| {{Party shading/Democratic/active}} | D{{Sub|47}}
{{Small|Wis.}}
{{Small|Ran}}

| {{Party shading/Independent (US)/active}} | I{{Sub|1}}
{{Small|Maine}}
{{Small|Ran}}

| {{Party shading/Independent (US)/active}} | I{{Sub|2}}
{{Small|Vt.}}
{{Small|Ran}}

| rowspan=2 {{Party shading/Republican/active}} | R{{Sub|51}}
{{Small|Utah}}
{{Small|Retired}}

style="height:2em"

| colspan=9 style="text-align:right" |Majority →

style="height:2em"

| {{Party shading/Republican}} | R{{Sub|41}}

| {{Party shading/Republican}} | R{{Sub|42}}

| {{Party shading/Republican/active}} | R{{Sub|43}}
{{Small|Miss. (reg)}}
{{Small|Ran}}

| {{Party shading/Republican/active}} | R{{Sub|44}}
{{Small|Miss. (sp)}}
{{Small|Ran}}

| {{Party shading/Republican/active}} | R{{Sub|45}}
{{Small|Neb.}}
{{Small|Ran}}

| {{Party shading/Republican/active}} | R{{Sub|46}}
{{Small|Nev.}}
{{Small|Ran}}

| {{Party shading/Republican/active}} | R{{Sub|47}}
{{Small|Texas}}
{{Small|Ran}}

| {{Party shading/Republican/active}} | R{{Sub|48}}
{{Small|#Wyoming}}
{{Small|Ran}}

| {{Party shading/Republican/active}} | R{{Sub|49}}
{{Small|Ariz.}}
{{Small|Retired}}

| {{Party shading/Republican/active}} | R{{Sub|50}}
{{Small|Tenn.}}
{{Small|Retired}}

{{Party shading/Republican}} | R{{Sub|40}}

| {{Party shading/Republican}} | R{{Sub|39}}

| {{Party shading/Republican}} | R{{Sub|38}}

| {{Party shading/Republican}} | R{{Sub|37}}

| {{Party shading/Republican}} | R{{Sub|36}}

| {{Party shading/Republican}} | R{{Sub|35}}

| {{Party shading/Republican}} | R{{Sub|34}}

| {{Party shading/Republican}} | R{{Sub|33}}

| {{Party shading/Republican}} | R{{Sub|32}}

| {{Party shading/Republican}} | R{{Sub|31}}

{{Party shading/Republican}} | R{{Sub|21}}

| {{Party shading/Republican}} | R{{Sub|22}}

| {{Party shading/Republican}} | R{{Sub|23}}

| {{Party shading/Republican}} | R{{Sub|24}}

| {{Party shading/Republican}} | R{{Sub|25}}

| {{Party shading/Republican}} | R{{Sub|26}}

| {{Party shading/Republican}} | R{{Sub|27}}

| {{Party shading/Republican}} | R{{Sub|28}}

| {{Party shading/Republican}} | R{{Sub|29}}

| {{Party shading/Republican}} | R{{Sub|30}}

{{Party shading/Republican}} | R{{Sub|20}}

| {{Party shading/Republican}} | R{{Sub|19}}

| {{Party shading/Republican}} | R{{Sub|18}}

| {{Party shading/Republican}} | R{{Sub|17}}

| {{Party shading/Republican}} | R{{Sub|16}}

| {{Party shading/Republican}} | R{{Sub|15}}

| {{Party shading/Republican}} | R{{Sub|14}}

| {{Party shading/Republican}} | R{{Sub|13}}

| {{Party shading/Republican}} | R{{Sub|12}}

| {{Party shading/Republican}} | R{{Sub|11}}

{{Party shading/Republican}} | R{{Sub|1}}

| {{Party shading/Republican}} | R{{Sub|2}}

| {{Party shading/Republican}} | R{{Sub|3}}

| {{Party shading/Republican}} | R{{Sub|4}}

| {{Party shading/Republican}} | R{{Sub|5}}

| {{Party shading/Republican}} | R{{Sub|6}}

| {{Party shading/Republican}} | R{{Sub|7}}

| {{Party shading/Republican}} | R{{Sub|8}}

| {{Party shading/Republican}} | R{{Sub|9}}

| {{Party shading/Republican}} | R{{Sub|10}}

= After the elections =

Some senators were "Re-elected," some were a "Gain" in the seat from the other party (either by beating an incumbent or by winning an open seat), some were a "Hold" by the same party but with a different senator, and those without a note were not up for election this year.

After these elections, Democrats had 45 seats, independents had 2, and Republicans had 53.

class="wikitable" style="text-align:center;"
width=10% {{Party shading/Democratic}} | D{{Sub|1}}

| width=10% {{Party shading/Democratic}} | D{{Sub|2}}

| width=10% {{Party shading/Democratic}} | D{{Sub|3}}

| width=10% {{Party shading/Democratic}} | D{{Sub|4}}

| width=10% {{Party shading/Democratic}} | D{{Sub|5}}

| width=10% {{Party shading/Democratic}} | D{{Sub|6}}

| width=10% {{Party shading/Democratic}} | D{{Sub|7}}

| width=10% {{Party shading/Democratic}} | D{{Sub|8}}

| width=10% {{Party shading/Democratic}} | D{{Sub|9}}

| width=10% {{Party shading/Democratic}} | D{{Sub|10}}

{{Party shading/Democratic}} | D{{Sub|20}}

| {{Party shading/Democratic}} | D{{Sub|19}}

| {{Party shading/Democratic}} | D{{Sub|18}}

| {{Party shading/Democratic}} | D{{Sub|17}}

| {{Party shading/Democratic}} | D{{Sub|16}}

| {{Party shading/Democratic}} | D{{Sub|15}}

| {{Party shading/Democratic}} | D{{Sub|14}}

| {{Party shading/Democratic}} | D{{Sub|13}}

| {{Party shading/Democratic}} | D{{Sub|12}}

| {{Party shading/Democratic}} | D{{Sub|11}}

{{Party shading/Democratic}} | D{{Sub|21}}

| {{Party shading/Democratic}} | D{{Sub|22}}

| {{Party shading/Democratic}} | D{{Sub|23}}

| {{Party shading/Democratic/active}} | D{{Sub|24}}
{{Small|Calif.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|25}}
{{Small|Conn.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|26}}
{{Small|Del.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|27}}
{{Small|Hawaii}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|28}}
{{Small|Md.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|29}}
{{Small|Mass.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|30}}
{{Small|Mich.}}
{{Small|Re-elected}}

{{Party shading/Democratic/active}} | D{{Sub|40}}
{{Small|Va.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|39}}
{{Small|R.I.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|38}}
{{Small|Pa.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|37}}
{{Small|Ohio}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|36}}
{{Small|N.Y.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|35}}
{{Small|N.M.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|34}}
{{Small|N.J.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|33}}
{{Small|Mont.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|32}}
{{Small|Minn. (sp)}}
{{Small|Elected{{Efn|name="Appointee elected"}}}}

| {{Party shading/Democratic/active}} | D{{Sub|31}}
{{Small|Minn. (reg)}}
{{Small|Re-elected}}

{{Party shading/Democratic/active}} | D{{Sub|41}}
{{Small|Wash.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|42}}
{{Small|W.Va.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|43}}
{{Small|Wis.}}
{{Small|Re-elected}}

| {{Party shading/Democratic/active}} | D{{Sub|44}}
{{Small|Ariz.}}
{{Small|Gain}}

| {{Party shading/Democratic/active}} | D{{Sub|45}}
{{Small|Nev.}}
{{Small|Gain}}

| {{Party shading/Independent (US)/active}} | I{{Sub|1}}
{{Small|Maine}}
{{Small|Re-elected}}

| {{Party shading/Independent (US)/active}} | I{{Sub|2}}
{{Small|Vt.}}
{{Small|Re-elected}}

| {{Party shading/Republican/active}} | R{{Sub|53}}
{{Small|N.D.}}
{{Small|Gain}}

| {{Party shading/Republican/active}} | R{{Sub|52}}
{{Small|Mo.}}
{{Small|Gain}}

| rowspan=2 {{Party shading/Republican/active}} | R{{Sub|51}}
{{Small|Ind.}}
{{Small|Gain}}

style="height:2em"

| colspan=9 style="text-align:right" |Majority →

{{Party shading/Republican}} | R{{Sub|41}}

| {{Party shading/Republican}} | R{{Sub|42}}

| {{Party shading/Republican/active}} | R{{Sub|43}}
{{Small|Miss. (reg)}}
{{Small|Re-elected}}

| {{Party shading/Republican/active}} | R{{Sub|44}}
{{Small|Miss. (sp)}}
{{Small|Elected{{Efn|name="Appointee elected"|Appointee elected}}}}

| {{Party shading/Republican/active}} | R{{Sub|45}}
{{Small|Neb.}}
{{Small|Re-elected}}

| {{Party shading/Republican/active}} | R{{Sub|46}}
{{Small|Tenn.}}
{{Small|Hold}}

| {{Party shading/Republican/active}} | R{{Sub|47}}
{{Small|Tex.}}
{{Small|Re-elected}}

| {{Party shading/Republican/active}} | R{{Sub|48}}
{{Small|Utah}}
{{Small|Hold}}

| {{Party shading/Republican/active}} | R{{Sub|49}}
{{Small|Wyo.}}
{{Small|Re-elected}}

| {{Party shading/Republican/active}} | R{{Sub|50}}
{{Small|Fla.}}
{{Small|Gain}}

{{Party shading/Republican}} | R{{Sub|40}}

| {{Party shading/Republican}} | R{{Sub|39}}

| {{Party shading/Republican}} | R{{Sub|38}}

| {{Party shading/Republican}} | R{{Sub|37}}

| {{Party shading/Republican}} | R{{Sub|36}}

| {{Party shading/Republican}} | R{{Sub|35}}

| {{Party shading/Republican}} | R{{Sub|34}}

| {{Party shading/Republican}} | R{{Sub|33}}

| {{Party shading/Republican}} | R{{Sub|32}}

| {{Party shading/Republican}} | R{{Sub|31}}

{{Party shading/Republican}} | R{{Sub|21}}

| {{Party shading/Republican}} | R{{Sub|22}}

| {{Party shading/Republican}} | R{{Sub|23}}

| {{Party shading/Republican}} | R{{Sub|24}}

| {{Party shading/Republican}} | R{{Sub|25}}

| {{Party shading/Republican}} | R{{Sub|26}}

| {{Party shading/Republican}} | R{{Sub|27}}

| {{Party shading/Republican}} | R{{Sub|28}}

| {{Party shading/Republican}} | R{{Sub|29}}

| {{Party shading/Republican}} | R{{Sub|30}}

{{Party shading/Republican}} | R{{Sub|20}}

| {{Party shading/Republican}} | R{{Sub|19}}

| {{Party shading/Republican}} | R{{Sub|18}}

| {{Party shading/Republican}} | R{{Sub|17}}

| {{Party shading/Republican}} | R{{Sub|16}}

| {{Party shading/Republican}} | R{{Sub|15}}

| {{Party shading/Republican}} | R{{Sub|14}}

| {{Party shading/Republican}} | R{{Sub|13}}

| {{Party shading/Republican}} | R{{Sub|12}}

| {{Party shading/Republican}} | R{{Sub|11}}

{{Party shading/Republican}} | R{{Sub|1}}

| {{Party shading/Republican}} | R{{Sub|2}}

| {{Party shading/Republican}} | R{{Sub|3}}

| {{Party shading/Republican}} | R{{Sub|4}}

| {{Party shading/Republican}} | R{{Sub|5}}

| {{Party shading/Republican}} | R{{Sub|6}}

| {{Party shading/Republican}} | R{{Sub|7}}

| {{Party shading/Republican}} | R{{Sub|8}}

| {{Party shading/Republican}} | R{{Sub|9}}

| {{Party shading/Republican}} | R{{Sub|10}}

style="vertical-align:top"

! Key:

|

{| class=wikitable

| align=center {{Party shading/Democratic}} | D{{Sub|#}}

| Democratic

align=center {{Party shading/Republican}} | R{{Sub|#}}

| Republican

align=center {{Party shading/Independent (US)}} | I{{Sub|#}}

| Independent, caucusing with Democrats

|}

Predictions

Several sites and individuals publish predictions of competitive seats. These predictions look at factors such as the strength of the incumbent (if the incumbent is running for re-election) and the other candidates, and the state's partisan lean (reflected in part by the state's Cook Partisan Voting Index rating). The predictions assign ratings to each seat, indicating the predicted advantage that a party has in winning that seat.

Most election predictors used:

  • "tossup": no advantage
  • "tilt" (used by some predictors): advantage that is not quite as strong as "lean"
  • "lean": slight advantage
  • "likely" or "favored": significant, but surmountable, advantage
  • "safe" or "solid": near-certain chance of victory

class="wikitable sortable" style="text-align:center; font-size:90%"
style="vertical-align:bottom"

! colspan=2 | Constituency

! colspan=2 | Incumbent

! colspan="11" | 2018 election ratings

style="vertical-align:bottom"

! State

! PVI{{Cite web | url=http://decisiondeskhq.com/news/2016-state-pvi-changes | title=2016 State PVI Changes – Decision Desk HQ | website=decisiondeskhq.com | date=December 15, 2017 | access-date=August 30, 2017 | archive-url=https://web.archive.org/web/20180613111559/https://decisiondeskhq.com/news/2016-state-pvi-changes/ | archive-date=June 13, 2018 | url-status=dead }}

! Senator

! data-sort-type="number"| Last
election{{efn|The last elections for this group of senators were in 2012, except for those who were appointed after the resignation or passing of a sitting senator, as noted.}}

! Cook
{{Small|Oct 26,
2018}}{{Cite web | title=2018 Senate Race Ratings | url=http://cookpolitical.com/ratings/senate-race-ratings | publisher=Cook Political Report | date=October 26, 2018}}

! IE
{{Small|Nov 1,
2018}}{{Cite web | title=Senate Ratings | url=https://insideelections.com/ratings/senate | publisher=Inside Elections | date=October 26, 2018}}

! Sabato
{{Small|Nov 5,
2018}}{{Cite web | title=2017-2018 Crystal Ball Senate race ratings map | url=http://www.centerforpolitics.org/crystalball/2018-senate | publisher=University of Virginia Center for Politics | date=November 5, 2018}}

! NYT
{{Small|Nov 5,
2018}}{{Cite news | title=2018 Election Calendar and Results | url=https://www.nytimes.com/interactive/2018/us/elections/calendar-primary-results.html | newspaper=The New York Times | date=January 23, 2018 | access-date=January 24, 2018}}

! Fox News{{Efn|The Fox News Midterm Power Rankings uniquely does not contain a category for Safe/Solid races}}
{{Small|Nov 5,
2018}}{{Cite web | title=2018 Senate Power Rankings | url=https://www.foxnews.com/politics/midterms-2018.html | publisher=Fox News | access-date=July 10, 2018}}

! CNN
{{Small|Nov 2,
2018}}{{Cite web | title=CNN Key Race Alert: This is the narrow path to a Democratic Senate | url=https://us.cnn.com/2018/09/09/politics/cnn-key-races-senate-update-early-september/index.html | website=CNN | date=September 9, 2018 | access-date=September 9, 2018}}

! RCP
{{Small|Nov 5,
2018}}{{Cite news | title=Battle for the Senate 2018 | url=https://www.realclearpolitics.com/epolls/2018/senate/2018_elections_senate_map.html | publisher=RCP | access-date=March 28, 2018}}

! Daily Kos
{{Small|Nov 5,
2018}}{{Cite news | title=Daily Kos Elections 2018 race ratings | url=https://www.dailykos.com/stories/2018/6/4/1769407/-Daily-Kos-Elections-2018-race-ratings#Senate | publisher=Daily Kos | date=October 5, 2018}}

! Politico
{{Small|Nov 5,
2018}}{{Cite web | title=Who wins 2018? Predictions for Every House & Senate Election | url=https://www.politico.com/election-results/2018/house-senate-race-ratings-and-predictions | website=POLITICO | access-date=September 8, 2018}}

! 538{{Efn|Reflects the classic version of the forecast model.}}
{{Small|Nov 6,
2018}}{{Cite web | last1=Silver | first1=Nate | title=Forecasting the race for the Senate | url=https://projects.fivethirtyeight.com/2018-midterm-election-forecast/senate | archive-url=https://web.archive.org/web/20180913040116/https://projects.fivethirtyeight.com/2018-midterm-election-forecast/senate/ | url-status=dead | archive-date=September 13, 2018 | website=FiveThirtyEight | access-date=October 25, 2018 | date=September 12, 2018}}

! Result

Arizona

| {{Party shading/Republican}} data-sort-value="105" | R+5

| {{Party shading/Republican}} data-sort-value="Flake, Jeff" | Jeff Flake
{{Small|(retiring)}}

| {{Party shading/Republican}} data-sort-value="49.2" | 49.2% R

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tilt|D|flip}}

| {{USRaceRating|Lean|D|flip}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|D|flip}}

| {{Party shading/Democratic}} data-sort-value="-50.0" | Sinema
50.0% D {{Small|(flip)}}

California

| {{Party shading/Democratic}} data-sort-value="-12" | D+12

| {{Party shading/Democratic}} data-sort-value="Feinstein, Dianne" | Dianne Feinstein

| {{Party shading/Democratic}} data-sort-value="-62.5" | 62.5% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-54.2" | Feinstein
54.2% D

Connecticut

| {{Party shading/Democratic}} data-sort-value="-6" | D+6

| {{Party shading/Democratic}} data-sort-value="Murphy, Chris" | Chris Murphy

| {{Party shading/Democratic}} data-sort-value="-54.8" | 54.8% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-59.5" | Murphy
59.5% D

Delaware

| {{Party shading/Democratic}} data-sort-value="-6" | D+6

| {{Party shading/Democratic}} data-sort-value="Carper, Tom" | Tom Carper

| {{Party shading/Democratic}} data-sort-value="-66.4" | 66.4% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-60.0" | Carper
60.0% D

Florida

| {{Party shading/Republican}} data-sort-value="102" | R+2

| {{Party shading/Democratic}} data-sort-value="Nelson, Bill" | Bill Nelson

| {{Party shading/Democratic}} data-sort-value="-55.2" | 55.2% D

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tilt|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|D}}

| {{Party shading/Republican}} data-sort-value="50.1" | Scott
50.1% R {{Small|(flip)}}

Hawaii

| {{Party shading/Democratic}} data-sort-value="-18" | D+18

| {{Party shading/Democratic}} data-sort-value="Hirono, Mazie" | Mazie Hirono

| {{Party shading/Democratic}} data-sort-value="-62.6" | 62.6% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-71.2" | Hirono
71.2% D

Indiana

| {{Party shading/Republican}} data-sort-value="109" | R+9

| {{Party shading/Democratic}} data-sort-value="Donnelly, Joe" | Joe Donnelly

| {{Party shading/Democratic}} data-sort-value="-50.0" | 50.0% D

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|R|flip}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|D}}

| {{Party shading/Republican}} data-sort-value="50.7" | Braun
50.7% R {{Small|(flip)}}

Maine

| {{Party shading/Democratic}} data-sort-value="-3" | D+3

| {{Party shading/Independent (US)}} data-sort-value="King, Angus" | Angus King

| {{Party shading/Independent (US)}} data-sort-value="-52.9" | 52.9% I

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Likely I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| {{Party shading/Independent (US)}} data-sort-value="-54.3" | King
54.3% I

Maryland

| {{Party shading/Democratic}} data-sort-value="-12" | D+12

| {{Party shading/Democratic}} data-sort-value="Cardin, Ben" | Ben Cardin

| {{Party shading/Democratic}} data-sort-value="-56.0" | 56.0% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-64.9" | Cardin
64.9% D

Massachusetts

| {{Party shading/Democratic}} data-sort-value="-12" | D+12

| {{Party shading/Democratic}} data-sort-value="Warren, Elizabeth" | Elizabeth Warren

| {{Party shading/Democratic}} data-sort-value="-53.7" | 53.7% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-60.3" | Warren
60.3% D

Michigan

| {{Party shading/Democratic}} data-sort-value="-1" | D+1

| {{Party shading/Democratic}} data-sort-value="Stabenow, Debbie" | Debbie Stabenow

| {{Party shading/Democratic}} data-sort-value="-58.8" | 58.8% D

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-52.3" | Stabenow
52.3% D

Minnesota
{{Small|(regular)}}

| {{Party shading/Democratic}} data-sort-value="-1" | D+1

| {{Party shading/DFL}} data-sort-value="Klobuchar, Amy" | Amy Klobuchar

| {{Party shading/DFL}} data-sort-value="-65.2" | 65.2% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/DFL}} data-sort-value="-60.3" | Klobuchar
60.3% D

Minnesota
{{Small|(special)}}

| {{Party shading/Democratic}} data-sort-value="-1" | D+1

| {{Party shading/DFL}} data-sort-value="Smith, Tina" | Tina Smith

| {{Party shading/Vacant}} data-sort-value="0" | Appointed
{{Small|(2018)}}{{Efn|Democrat Al Franken won with 53.2% of the vote in 2014, but resigned on January 2, 2018.}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{Party shading/DFL}} data-sort-value="-53.0" | Smith
53.0% D

Mississippi
{{Small|(regular)}}

| {{Party shading/Republican}} data-sort-value="109" | R+9

| {{Party shading/Republican}} data-sort-value="Wicker, Roger" | Roger Wicker

| {{Party shading/Republican}} data-sort-value="57.1" | 57.1% R

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Likely|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{Party shading/Republican}} data-sort-value="58.5" | Wicker
58.5% R

Mississippi
{{Small|(special)}}{{Efn | name="MSnonpartisan" |Special elections in Mississippi are nonpartisan, therefore party affiliation is not listed on the ballot.}}

| {{Party shading/Republican}} data-sort-value="109" | R+9

| {{Party shading/Republican}} data-sort-value="Hyde-Smith, Cindy" | Cindy Hyde-Smith

| {{Party shading/Vacant}} data-sort-value="0" | Appointed
{{Small|(2018)}}{{Efn|Republican Thad Cochran won with 59.9% of the vote in 2014, but resigned on April 1, 2018 due to declining health.}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Likely|R}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Likely|R}}

| {{USRaceRating|Likely|R}}

| {{USRaceRating|Likely|R}}

| {{USRaceRating|Lean|R}}

| {{Party shading/Republican}} data-sort-value="53.6" | Hyde-Smith
53.6% R

Missouri

| {{Party shading/Republican}} data-sort-value=109 | R+9

| {{Party shading/Democratic}} data-sort-value="McCaskill, Claire" | Claire McCaskill

| {{Party shading/Democratic}} data-sort-value="-54.8" | 54.8% D

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tilt|R|flip}}

| {{USRaceRating|Lean|R|flip}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{Party shading/Republican}} data-sort-value="51.4" | Hawley
51.4% R {{Small|(flip)}}

Montana

| {{Party shading/Republican}} data-sort-value=111 | R+11

| {{Party shading/Democratic}} data-sort-value="Tester, Jon" | Jon Tester

| {{Party shading/Democratic}} data-sort-value="-48.6" | 48.6% D

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tilt|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Likely|D}}

| {{Party shading/Democratic}} data-sort-value="-50.3" | Tester
50.3% D

Nebraska

| {{Party shading/Republican}} data-sort-value=114 | R+14

| {{Party shading/Republican}} data-sort-value="Fischer, Deb" | Deb Fischer

| {{Party shading/Republican}} data-sort-value="57.8" | 57.8% R

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Likely|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{Party shading/Republican}} data-sort-value="57.7" | Fischer
57.7% R

Nevada

| {{Party shading/Democratic}} data-sort-value=-1 | D+1

| {{Party shading/Republican}} data-sort-value="Heller, Dean" | Dean Heller

| {{Party shading/Republican}} data-sort-value="45.9" | 45.9% R

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tilt|D|flip}}

| {{USRaceRating|Lean|D|flip}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{Party shading/Democratic}} data-sort-value="-50.4" | Rosen
50.4% D {{Small|(flip)}}

New Jersey

| {{Party shading/Democratic}} data-sort-value=-7 | D+7

| {{Party shading/Democratic}} data-sort-value="Menendez, Bob" | Bob Menendez

| {{Party shading/Democratic}} data-sort-value="-58.9" | 58.9% D

| {{USRaceRating|Tossup}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Likely|D}}

| {{Party shading/Democratic}} data-sort-value="-54.0" | Menendez
54.0% D

New Mexico

| {{Party shading/Democratic}} data-sort-value=-3 | D+3

| {{Party shading/Democratic}} data-sort-value="Heinrich, Martin" | Martin Heinrich

| {{Party shading/Democratic}} data-sort-value="-51.0" | 51.0% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-54.1" | Heinrich
54.1% D

New York

| {{Party shading/Democratic}} data-sort-value=-11 | D+11

| {{Party shading/Democratic}} data-sort-value="Gillibrand, Kirsten" | Kirsten Gillibrand

| {{Party shading/Democratic}} data-sort-value="-72.2" | 72.2% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-67.0" | Gillibrand
67.0% D

North Dakota

| {{Party shading/Republican}} data-sort-value=116 | R+16

| {{Party shading/North Dakota Democratic-NPL}} data-sort-value="Heitkamp, Heidi" | Heidi Heitkamp

| {{Party shading/North Dakota Democratic-NPL}} data-sort-value="-50.2" | 50.2% D

| {{USRaceRating|Lean|R|Flip}}

| {{USRaceRating|Lean|R|Flip}}

| {{USRaceRating|Lean|R|Flip}}

| {{USRaceRating|Lean|R|Flip}}

| {{USRaceRating|Likely|R|Flip}}

| {{USRaceRating|Lean|R|Flip}}

| {{USRaceRating|Lean|R|Flip}}

| {{USRaceRating|Lean|R|Flip}}

| {{USRaceRating|Lean|R|Flip}}

| {{USRaceRating|Lean|R|Flip}}

| {{Party shading/Republican}} data-sort-value="55.4" | Cramer
55.4% R {{Small|(flip)}}

Ohio

| {{Party shading/Republican}} data-sort-value=103 | R+3

| {{Party shading/Democratic}} data-sort-value="Brown, Sherrod" | Sherrod Brown

| {{Party shading/Democratic}} data-sort-value="-50.7" | 50.7% D

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-53.4" | Brown
53.4% D

Pennsylvania

| data-sort-value=0 | EVEN

| {{Party shading/Democratic}} data-sort-vaue="Casey, Bob" | Bob Casey Jr.

| {{Party shading/Democratic}} data-sort-value="-53.7" | 53.7% D

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-55.7" | Casey
55.7% D

Rhode Island

| {{Party shading/Democratic}} data-sort-value=-10 | D+10

| {{Party shading/Democratic}} data-sort-value="Whitehouse, Sheldon" | Sheldon Whitehouse

| {{Party shading/Democratic}} data-sort-value="-64.8" | 64.8% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-61.5" | Whitehouse
61.5% D

Tennessee

| {{Party shading/Republican}} data-sort-value=114 | R+14

| {{Party shading/Republican}} data-sort-value="Corker, Bob" | Bob Corker
{{Small|(retiring)}}

| {{Party shading/Republican}} data-sort-value="64.9" | 64.9% R

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Likely|R}}

| {{Party shading/Republican}} data-sort-value="54.7" | Blackburn
54.7% R

Texas

| {{Party shading/Republican}} data-sort-value=108 | R+8

| {{Party shading/Republican}} data-sort-value="Cruz, Ted" | Ted Cruz

| {{Party shading/Republican}} data-sort-value="56.5" | 56.5% R

| {{USRaceRating|Tossup}}

| {{USRaceRating|Likely|R}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Lean|R}}

| {{USRaceRating|Likely|R}}

| {{Party shading/Republican}} data-sort-value="50.9" | Cruz
50.9% R

Utah

| {{Party shading/Republican}} data-sort-value=120 | R+20

| {{Party shading/Republican}} data-sort-value="Hatch, Orrin" | Orrin Hatch
{{Small|(retiring)}}

| {{Party shading/Republican}} data-sort-value="65.3" | 65.3% R

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Likely|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{Party shading/Republican}} data-sort-value="62.6" | Romney
62.6% R

Vermont

| {{Party shading/Democratic}} data-sort-value=-15 | D+15

| {{Party shading/Independent (US)}} data-sort-value="Sanders, Bernie" | Bernie Sanders

| {{Party shading/Independent (US)}} data-sort-value="-71.0" | 71.0% I

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Likely I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| style="background:{{party color|Independent (US)}}" |{{sort|098|Safe I}}

| {{Party shading/Independent (US)}} data-sort-value="-67.4" | Sanders
67.4% I

Virginia

| {{Party shading/Democratic}} data-sort-value=-1 | D+1

| {{Party shading/Democratic}} data-sort-value="Kaine, Tim" | Tim Kaine

| {{Party shading/Democratic}} data-sort-value="-52.3" | 52.3% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-57.0" | Kaine
57.0% D

Washington

| {{Party shading/Democratic}} data-sort-value=-7 | D+7

| {{Party shading/Democratic}} data-sort-value="Cantwell, Maria" | Maria Cantwell

| {{Party shading/Democratic}} data-sort-value="-60.5" | 60.5% D

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-58.4" | Cantwell
58.4% D

West Virginia

| {{Party shading/Republican}} data-sort-value=120 | R+20

| {{Party shading/Democratic}} data-sort-value="Manchin, Joe" | Joe Manchin

| {{Party shading/Democratic}} data-sort-value="-60.6" | 60.6% D

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Tilt|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Tossup}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Likely|D}}

| {{Party shading/Democratic}} data-sort-value="-49.6" | Manchin
49.6% D

Wisconsin

| data-sort-value=0 | EVEN

| {{Party shading/Democratic}} data-sort-value="Baldwin, Tammy" | Tammy Baldwin

| {{Party shading/Democratic}} data-sort-value="-51.4" | 51.4% D

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Lean|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Likely|D}}

| {{USRaceRating|Safe|D}}

| {{Party shading/Democratic}} data-sort-value="-55.4" | Baldwin
55.4% D

Wyoming

| {{Party shading/Republican}} data-sort-value=125 | R+25

| {{Party shading/Republican}} data-sort-value="Barrasso, John" | John Barrasso

| {{Party shading/Republican}} data-sort-value="75.7" | 75.7% R

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Likely|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{USRaceRating|Safe|R}}

| {{Party shading/Republican}} data-sort-value="67.0" | Barrasso
67.0% R

colspan=4 | Overall{{Efn|Democratic total includes 2 Independents who caucus with the Democrats}}

| D - 43
R - 48
9 tossups

|{{Party shading/Republican}}| D - 48
R - 51
1 tossup

|{{Party shading/Republican}}| D - 48
R - 52
0 tossups

| D - 43
R - 48
9 tossups

|{{Party shading/Republican}}| D - 45
R - 50
5 tossups

| D - 45
R - 49
6 tossups

| D - 43
R - 49
8 tossups

|{{Party shading/Republican}}| D - 44
R - 50
6 tossups

|{{Party shading/Republican}}| D - 45
R - 50
5 tossups

|{{Party shading/Republican}}| D - 48
R - 50
2 tossups

|{{Party shading/Republican}}| Results:
D - 47
R - 53

Election dates

These are the election dates for the regularly scheduled general elections.

class="wikitable sortable"
State

! Filing
deadline{{Cite news | url=https://www.dailykos.com/stories/2017/12/4/1721045/-Daily-Kos-Elections-2018-primary-calendar | title=Daily Kos Elections 2018 Primary Calendar | work=Daily Kos Elections | access-date=January 30, 2018}}

! Primary
election{{Cite news | url=http://www.thegreenpapers.com/G18/events.phtml?format=chronological&type=ef | title=2018 Primary and Runoff Elections for Statewide offices and Congress Chronologically with Filing Deadlines | work=The Green Papers | access-date=November 14, 2017}}

! Primary
run-off
{{Small|(if necessary)}}

! General
election

! Poll closing
{{Small|(Eastern Time)}}{{Cite news | url=https://www.thegreenpapers.com/G18/closing.phtml?format=gc | title=2018 Poll Closing Times for Statewide office and Congress General Election Chronologically | work=The Green Papers | access-date=November 14, 2017}}

Arizona

| data-sort-value="May 30, 2018" | May 30, 2018

| data-sort-value="August 28, 2018" | August 28, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2100 | 9pm

California

| data-sort-value="March 9, 2018" | March 9, 2018

| data-sort-value="June 5, 2018" | June 5, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2300 | 11pm

Connecticut

| data-sort-value="June 12, 2018" | June 12, 2018

| data-sort-value="August 14, 2018" | August 14, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2000 | 8pm

Delaware

| data-sort-value="July 10, 2018" | July 10, 2018

| data-sort-value="September 6, 2018" | September 6, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2000 | 8pm

Florida

| data-sort-value="May 4, 2018" | May 4, 2018

| data-sort-value="August 28, 2018" style= |August 28, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=1920 | 7pm and 8pm

Hawaii

| data-sort-value="June 5, 2018" | June 5, 2018

| data-sort-value="August 11, 2018" | August 11, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2300 | 11pm

Indiana

| data-sort-value="February 9, 2018" | February 9, 2018

| data-sort-value="May 8, 2018" | May 8, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=1800 | 6pm and 7pm

Maine

| data-sort-value="March 15, 2018" | March 15, 2018

| data-sort-value="June 12, 2018" | June 12, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2000 | 8pm

Maryland

| data-sort-value="February 27, 2018" | February 27, 2018

| data-sort-value="June 26, 2018" | June 26, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2000 | 8pm

Massachusetts

| data-sort-value="June 5, 2018" | June 5, 2018

| data-sort-value="September 4, 2018" | September 4, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2000 | 8pm

Michigan

| data-sort-value="April 24, 2018" | April 24, 2018

| data-sort-value="August 7, 2018" | August 7, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2020 | 8pm and 9pm

Minnesota

| data-sort-value="June 5, 2018" | June 5, 2018

| data-sort-value="August 14, 2018" style= |August 14, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2100 | 9pm

Mississippi

| data-sort-value="March 1, 2018" | March 1, 2018

| data-sort-value="June 5, 2018" | June 5, 2018

| data-sort-value="June 26, 2018" | June 26, 2018

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2000 | 8pm

Mississippi (special)

| data-sort-value="March 26, 2018" | March 26, 2018

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 27, 2018" | November 27, 2018{{Efn|Mississippi held a run-off for the special election on November 27, 2018 because no candidate won a majority of the vote in the November 6, 2018 jungle primary.}}

| data-sort-value=2100 | 8pm

Missouri

| data-sort-value="March 27, 2018" | March 27, 2018

| data-sort-value="August 7, 2018" | August 7, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2000 | 8pm

Montana

| data-sort-value="March 12, 2018" | March 12, 2018

| data-sort-value="June 5, 2018" | June 5, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2200 | 10pm

Nebraska

| data-sort-value="March 1, 2018" | March 1, 2018

| data-sort-value="May 15, 2018" | May 15, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2100 | 9pm

Nevada

| data-sort-value="March 16, 2018" | March 16, 2018

| data-sort-value="June 12, 2018" | June 12, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2200 | 10pm

New Jersey

| data-sort-value="April 2, 2018" | April 2, 2018

| data-sort-value="June 5, 2018" | June 5, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2000 | 8pm

New Mexico

| data-sort-value="March 13, 2018" | March 13, 2018

| data-sort-value="June 5, 2018" | June 5, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2100 | 9pm

New York

| data-sort-value="April 12, 2018" | April 12, 2018

| data-sort-value="June 26, 2018" | June 26, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2100 | 9pm

North Dakota

| data-sort-value="April 9, 2018" | April 9, 2018

| data-sort-value="June 12, 2018" | June 12, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2220 | 8pm and 9pm

Ohio

| data-sort-value="February 7, 2018" | February 7, 2018

| data-sort-value="May 8, 2018" | May 8, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=1930 | 7:30pm

Pennsylvania

| data-sort-value="March 20, 2018" | March 20, 2018

| data-sort-value="May 15, 2018" | May 15, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2000 | 8pm

Rhode Island

| data-sort-value="June 27, 2018" | June 27, 2018

| data-sort-value="September 12, 2018" | September 12, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2000 | 8pm

Tennessee

| data-sort-value="April 5, 2018" | April 5, 2018

| data-sort-value="August 2, 2018"|August 2, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2000 | 8pm

Texas

| data-sort-value="December 11, 2017" | December 11, 2017

| data-sort-value="March 6, 2018" | March 6, 2018

| data-sort-value="May 22, 2018" | May 22, 2018{{Small|
(unnecessary)}}

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2020 | 8pm and 9pm

Utah

| data-sort-value="March 15, 2018" | March 15, 2018

| data-sort-value="June 26, 2018" | June 26, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2200 | 10pm

Vermont

| data-sort-value="May 31, 2018" | May 31, 2018

| data-sort-value="August 14, 2018" | August 14, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=1900 | 7pm

Virginia

| data-sort-value="March 29, 2018" | March 29, 2018

| data-sort-value="June 12, 2018" | June 12, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=1900 | 7pm

Washington

| data-sort-value="May 18, 2018" | May 18, 2018

| data-sort-value="August 7, 2018" | August 7, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2300 | 11pm

West Virginia

| data-sort-value="January 27, 2018" | January 27, 2018

| data-sort-value="May 8, 2018" | May 8, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=1930 | 7:30pm

Wisconsin

| data-sort-value="June 1, 2018" | June 1, 2018

| data-sort-value="August 14, 2018" | August 14, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2100 | 9pm

Wyoming

| data-sort-value="June 1, 2018" | June 1, 2018

| data-sort-value="August 21, 2018" | August 21, 2018

| data-sort-value="December 31, 2018" | N/A

| data-sort-value="November 6, 2018" | November 6, 2018

| data-sort-value=2100 | 9pm

Gains and losses

=Retirements=

[[File:2018 United States Senate elections retirements map.svg|thumb|250px|Map of retirements:
{{legend|#FF9998|Republican incumbent}}

{{legend|#93C5DD|Democratic incumbent}}

{{legend|#999999|Independent incumbent}}

{{legend|#CA0020|Republican incumbent retired}}]]

Three Republicans retired instead of seeking re-election.

class="wikitable sortable plainrowheaders"
scope="col" |State

! scope="col" |Senator

! scope="col" |Replaced by

Arizona

| {{Party shading/Republican}} | {{sortname|Jeff|Flake}}

| {{Party shading/Democratic}} | {{sortname|Kyrsten|Sinema}}

Tennessee

| {{Party shading/Republican}} | {{sortname|Bob|Corker}}

| {{Party shading/Republican}} | {{sortname|Marsha|Blackburn}}

Utah

| {{Party shading/Republican}} | {{sortname|Orrin|Hatch}}

| {{Party shading/Republican}} | {{sortname|Mitt|Romney}}

=Defeats=

Four Democrats and one Republican sought re-election but lost in the general election.

class="wikitable sortable plainrowheaders"
scope="col" |State

! scope="col" |Senator

! scope="col" |Replaced by

Florida

| {{Party shading/Democratic}} | {{sortname|Bill|Nelson}}

| {{Party shading/Republican}} | {{sortname|Rick|Scott}}

Indiana

| {{Party shading/Democratic}} | {{sortname|Joe|Donnelly}}

| {{Party shading/Republican}} | {{sortname|Mike|Braun}}

Missouri

| {{Party shading/Democratic}} | {{sortname|Claire|McCaskill}}

| {{Party shading/Republican}} | {{sortname|Josh|Hawley}}

Nevada

| {{Party shading/Republican}} | {{sortname|Dean|Heller}}

| {{Party shading/Democratic}} | {{sortname|Jacky|Rosen}}

North Dakota

| {{Party shading/North Dakota Democratic-NPL}} | {{sortname|Heidi|Heitkamp}}

| {{Party shading/Republican}} | {{sortname|Kevin|Cramer}}

=Post-election changes=

One Republican resigned before the start of the 116th Congress on December 31, 2018, and another Republican resigned during the 116th Congress for health reasons. Initially, all were replaced by Republican appointees.

class="wikitable sortable plainrowheaders"
scope="col" |State

! scope="col" |Senator

! scope="col" |Replaced by

Arizona
(Class 3)

| {{Party shading/Republican}} | {{sortname|Jon|Kyl}}

| {{Party shading/Republican}} | {{sortname|Martha|McSally}}

Georgia
(Class 3)

| {{Party shading/Republican}} | {{sortname|Johnny|Isakson}}

| {{Party shading/Republican}} | {{sortname|Kelly|Loeffler}}

Race summary

= Special elections during the preceding Congress =

In these special elections, the winners will be seated before January 3, 2019, when elected and qualified. They are ordered by election date, then by state and by class.

class="wikitable sortable"
valign=bottom

! rowspan=2 | State

! colspan=3 | Incumbent

! rowspan=2 | Result

! rowspan=2 class="unsortable" | Candidates

Senator

! Party

! Electoral
history

Minnesota
(Class 2)

| data-sort-value="Smith, Tina" | Tina Smith

| {{Party shading/DFL}} | DFL

| 2018 {{Small|(appointed)}}

| Interim appointee elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Minnesota Democratic–Farmer–Labor Party}}{{Aye}} Tina Smith (DFL) 53.0%
  • {{Party stripe|Republican Party (US)}}Karin Housley (Republican) 42.4%
  • {{Party stripe|Legal Marijuana Now Party}}Sarah Wellington (Legal Marijuana Now) 3.7%
  • {{Party stripe|Independent (US)}}Jerry Trooien (Independent) 0.9%

}}

Mississippi
(Class 2)

| data-sort- value="Hyde-Smith, Cindy"| Cindy Hyde-Smith

| {{Party shading/Republican}} | Republican

| 2018 {{Small|(appointed)}}

| Interim appointee elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Republican Party (US)}}{{Aye}} Cindy Hyde-Smith (Republican) 53.6%
  • {{Party stripe|Democratic Party (US)}}Mike Espy (Democratic) 46.4%

}}

= Elections leading to the next Congress =

In these general elections, the winners were elected for the term beginning January 3, 2019.

All of the elections involve the Class 1 seats and they are ordered by state.

class="wikitable sortable"
valign=bottom

! rowspan=2 | State

! colspan=3 | Incumbent

! rowspan=2 | Result

! rowspan=2 class=unsortable | Candidates

Senator

! Party

! Electoral
history

Arizona

| data-sort-value="Flake, Jeff" | Jeff Flake

| {{Party shading/Republican}} | Republican

| 2012

| {{Party shading/Democratic}} | Incumbent retired.
Democratic gain.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Kyrsten|Sinema}} (Democratic) 50.0%
  • {{Party stripe|Republican Party (US)}}Martha McSally (Republican) 47.6%
  • {{Party stripe|Green Party (US)}}Angela Green (Green) 2.4%

}}

California

| data-sort-value="Feinstein, Dianne" | Dianne Feinstein

| {{Party shading/Democratic}} | Democratic

| 1992 United States Senate special election in California
1994
2000
2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Dianne|Feinstein}} (Democratic) 54.2%
  • {{Party stripe|Democratic Party (US)}}Kevin de León (Democratic) 45.8%

}}

Connecticut

| data-sort-value="Murphy, Chris" | Chris Murphy

| {{Party shading/Democratic}} | Democratic

| 2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Chris|Murphy}} (Democratic) 59.5%
  • {{Party stripe|Republican Party (US)}}Matthew Corey (Republican) 39.4%

}}{{collapsible list|title={{nobold|Others}}

| {{Party stripe|Libertarian Party (US)}}Richard Lion (Libertarian) 0.6%

| {{Party stripe|Green Party (US)}}Jeff Russell (Green) 0.5%

}}

Delaware

| data-sort-value="Carper, Tom" | Tom Carper

| {{Party shading/Democratic}} | Democratic

| 2000
2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Tom|Carper}} (Democratic) 60.0%
  • {{Party stripe|Republican Party (US)}}Robert Arlett (Republican) 37.8%

}}{{collapsible list|title={{nobold|Others}}

| {{Party stripe|Green Party (US)}}Demitri Theodoropoulos (Green) 1.2%

| {{Party stripe|Libertarian Party (US)}}Nadine Frost (Libertarian) 1.1%

}}

Florida

| data-sort-value="Nelson, Bill" | Bill Nelson

| {{Party shading/Democratic}} | Democratic

| 2000
2006
2012

| {{Party shading/Republican}}| Incumbent lost re-election.
Republican gain.
Winner delayed term until January 8, 2019, to finish his term as Governor of Florida.

| nowrap | {{Plainlist |

  • {{Party stripe|Republican Party (US)}}{{Aye}} {{Sortname|Rick|Scott}} (Republican) 50.1%
  • {{Party stripe|Democratic Party (US)}}Bill Nelson (Democratic) 49.9%

}}

Hawaii

| data-sort-value="Hirono, Mazie" | Mazie Hirono

| {{Party shading/Democratic}} | Democratic

| 2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Mazie|Hirono}} (Democratic) 71.2%
  • {{Party stripe|Republican Party (US)}}Ron Curtis (Republican) 28.8%

}}

Indiana

| data-sort-value="Donnelly, Joe" | Joe Donnelly

| {{Party shading/Democratic}} | Democratic

| 2012

| {{Party shading/Republican}} |Incumbent lost re-election.
Republican gain.

| nowrap | {{Plainlist |

  • {{Party stripe|Republican Party (US)}}{{Aye}} {{Sortname|Mike|Braun}} (Republican) 50.9%
  • {{Party stripe|Democratic Party (US)}}Joe Donnelly (Democratic) 45.0%
  • {{Party stripe|Libertarian Party (US)}}Lucy Brenton (Libertarian) 4.0%

}}

Maine

| data-sort-value="King, Angus" | Angus King

| {{Party shading/Independent (US)}} | Independent

| 2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Independent (US)}}{{Aye}} {{Sortname|Angus|King}} (Independent) 54.3%
  • {{Party stripe|Republican Party (US)}}Eric Brakey (Republican) 35.2%
  • {{Party stripe|Democratic Party (US)}}Zak Ringelstein (Democratic) 10.4%

}}

Maryland

| data-sort-value="Cardin, Ben" | Ben Cardin

| {{Party shading/Democratic}} | Democratic

| 2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Ben|Cardin}} (Democratic) 64.9%
  • {{Party stripe|Republican Party (US)}}Tony Campbell (Republican) 30.3%
  • {{Party stripe|Independent (US)}}Neal Simon (Independent) 3.7%
  • {{Party stripe|Libertarian Party (US)}}Arvin Vohra (Libertarian) 1.0%

}}

Massachusetts

| data-sort-value="Warren, Elizabeth" | Elizabeth Warren

| {{Party shading/Democratic}} | Democratic

| 2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} Elizabeth Warren (Democratic) 60.4%
  • {{Party stripe|Republican Party (US)}}Geoff Diehl (Republican) 36.2%
  • {{Party stripe|Independent (US)}}Shiva Ayyadurai (Independent) 3.4%

}}

Michigan

| data-sort-value="Stabenow, Debbie" | Debbie Stabenow

| {{Party shading/Democratic}} | Democratic

| 2000
2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Debbie|Stabenow}} (Democratic) 52.3%
  • {{Party stripe|Republican Party (US)}}John James (Republican) 45.8%

}}{{collapsible list|title={{nobold|Others}}

| {{Party stripe|Independent (US)}}Marcia Squier (Independent) 1.0%

| {{Party stripe|Constitution Party (US)}}George Huffman III (Constitution) 0.6%

| {{Party stripe|Natural Law Party (US)}}John Wilhelm (Natural Law) 0.4%

}}

Minnesota

| data-sort-value="Klobuchar, Amy" | Amy Klobuchar

| {{Party shading/Minnesota Democratic-Farmer-Labor}} | DFL

| 2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Minnesota Democratic–Farmer–Labor Party}}{{Aye}} {{Sortname|Amy|Klobuchar}} (DFL) 60.3%
  • {{Party stripe|Republican Party (US)}}Jim Newberger (Republican) 36.2%
  • {{Party stripe|Legal Marijuana Now Party}}Dennis Schuller (Legal Marijuana Now) 2.5%
  • {{Party stripe|Green Party (US)}}Paula M. Overby (Green) 0.9%

}}

Mississippi

| data-sort-value="Wicker, Roger" | Roger Wicker

| {{Party shading/Republican}} | Republican

| 2007 {{Small|(appointed)}}
2008 United States Senate special election in Mississippi
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Republican Party (US)}}{{Aye}} {{Sortname|Roger|Wicker}} (Republican) 58.5%
  • {{Party stripe|Democratic Party (US)}}David Baria (Democratic) 39.5%

}}{{collapsible list|title={{nobold|Others}}

| {{Party stripe|Libertarian Party (US)}}Danny Bedwell (Libertarian) 1.4%

| {{Party stripe|Reform Party (US)}}Shawn O'Hara (Reform) 0.6%

}}

Missouri

| data-sort-value="McCaskill, Claire" | Claire McCaskill

| {{Party shading/Democratic}} | Democratic

| 2006
2012

| {{Party shading/Republican}} |Incumbent lost re-election.
Republican gain.

| nowrap | {{Plainlist |

  • {{Party stripe|Republican Party (US)}}{{Aye}} {{Sortname|Josh|Hawley}} (Republican) 51.4%
  • {{Party stripe|Democratic Party (US)}}Claire McCaskill (Democratic) 45.6%

}}{{collapsible list|title={{nobold|Others}}

| {{Party stripe|Independent (US)}}Craig O'Dear (Independent) 1.4%

| {{Party stripe|Libertarian Party (US)}}Japheth Campbell (Libertarian) 1.1%

| {{Party stripe|Green Party (US)}}Jo Crain (Green) 0.5%

}}

Montana

| data-sort-value="Tester, Jon" | Jon Tester

| {{Party shading/Democratic}} | Democratic

| 2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Jon|Tester}} (Democratic) 50.3%
  • {{Party stripe|Republican Party (US)}}Matt Rosendale (Republican) 46.8%
  • {{Party stripe|Libertarian Party (US)}}Rick Breckenridge (Libertarian) 2.9%

}}

Nebraska

| data-sort-value="Fischer, Deb" | Deb Fischer

| {{Party shading/Republican}} | Republican

| 2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Republican Party (US)}}{{Aye}} {{Sortname|Deb|Fischer}} (Republican) 57.7%
  • {{Party stripe|Democratic Party (US)}}Jane Raybould (Democratic) 38.6%
  • {{Party stripe|Libertarian Party (US)}}Jim Schultz (Libertarian) 3.7%

}}

Nevada

| data-sort-value="Heller, Dean" | Dean Heller

| {{Party shading/Republican}} | Republican

| 2011 {{Small|(appointed)}}
2012

| {{Party shading/Democratic}} | Incumbent lost re-election.
Democratic gain.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Jacky|Rosen}} (Democratic) 50.4%
  • {{Party stripe|Republican Party (US)}}Dean Heller (Republican) 45.4%

}}{{collapsible list|title={{nobold|Others}}

| {{Party stripe|Independent (US)}}Barry Michaels (Independent) 1.0%

| {{Party stripe|Libertarian Party (US)}}Tim Hagan (Libertarian) 0.9%

| {{Party stripe|Independent American Party}}Kamau Bakari (Independent American) 0.7%

}}

New Jersey

| data-sort-value="Menendez, Bob" | Bob Menendez

| {{Party shading/Democratic}} | Democratic

| 2006 {{Small|(appointed)}}
2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Bob|Menendez}} (Democratic) 54.0%
  • {{Party stripe|Republican Party (US)}}Bob Hugin (Republican) 42.8%

}}{{collapsible list|title={{nobold|Others}}

| {{Party stripe|Green Party (US)}}Madelyn Hoffman (Green) 0.8%

| {{Party stripe|Libertarian Party (US)}}Murray Sabrin (Libertarian) 0.7%

| {{Party stripe|Other}}Natalie Rivera (For The People) 0.6%

| {{Party stripe|Other}}Tricia Flanagan (New Day NJ) 0.5%

| {{Party stripe|Other}}Kevin Kimple (Make It Simple) 0.3%

| {{Party stripe|Other}}Hank Schroeder (Economic Growth) 0.3%

}}

New Mexico

| data-sort-value="Heinrich, Martin" | Martin Heinrich

| {{Party shading/Democratic}} | Democratic

| 2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Martin|Heinrich}} (Democratic) 54.1%
  • {{Party stripe|Republican Party (US)}}Mick Rich (Republican) 30.5%
  • {{Party stripe|Libertarian Party (US)}}Gary Johnson (Libertarian) 15.4%

}}

New York

| data-sort-value="Gillibrand, Kirsten" | Kirsten Gillibrand

| {{Party shading/Democratic}} | Democratic

| 2009 {{Small|(appointed)}}
2010 United States Senate special election in New York
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Kirsten|Gillibrand}} (Democratic) 67.0%
  • {{Party stripe|Republican Party (US)}}Chele Chiavacci Farley (Republican) 33.0%

}}

North Dakota

| data-sort-value="Heitkamp, Heidi" | Heidi Heitkamp

| {{Party shading/North Dakota Democratic-NPL}} | Democratic-NPL

| 2012

| {{Party shading/Republican}} |Incumbent lost re-election.
Republican gain.

| nowrap| {{Plainlist |

  • {{Party stripe|Republican Party (US)}}{{Aye}} {{Sortname|Kevin|Cramer}} (Republican) 55.5%
  • {{Party stripe|North Dakota Democratic-NPL Party}}Heidi Heitkamp (Democratic-NPL) 44.5%

}}

Ohio

| data-sort-value="Brown, Sherrod" | Sherrod Brown

| {{Party shading/Democratic}} | Democratic

| 2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Sherrod|Brown}} (Democratic) 53.4%
  • {{Party stripe|Republican Party (US)}}Jim Renacci (Republican) 46.6%

}}

Pennsylvania

| data-sort-value="Casey Bob" | Bob Casey Jr.

| {{Party shading/Democratic}} | Democratic

| 2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Bob|Casey Jr.}} (Democratic) 55.7%
  • {{Party stripe|Republican Party (US)}}Lou Barletta (Republican) 42.6%

}}{{collapsible list|title={{nobold|Others}}

| {{Party stripe|Libertarian Party (US)}}Dale Kerns (Libertarian) 1.0%

| {{Party stripe|Green Party (US)}}Neal Gale (Green) 0.6%

}}

Rhode Island

| data-sort-value="Whitehouse, Sheldon" | Sheldon Whitehouse

| {{Party shading/Democratic}} | Democratic

| 2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Sheldon|Whitehouse}} (Democratic) 61.6%
  • {{Party stripe|Republican Party (US)}}Robert Flanders (Republican) 38.4%

}}

Tennessee

| data-sort-value="Corker, Bob" | Bob Corker

| {{Party shading/Republican}} | Republican

| 2006
2012

| {{Party shading/Republican/Hold}} |Incumbent retired.
Republican hold.

| nowrap | {{Plainlist |

  • {{Party stripe|Republican Party (US)}}{{Aye}} {{Sortname|Marsha|Blackburn}} (Republican) 54.7%
  • {{Party stripe|Democratic Party (US)}}Phil Bredesen (Democratic) 43.9%

}}{{collapsible list|title={{nobold|Others}}

| {{Party stripe|Independent (US)}}Trudy Austin (Independent) 0.4%

| {{Party stripe|Independent (US)}}Dean Hill (Independent) 0.4%

| {{Party stripe|Independent (US)}}Kris Todd (Independent) 0.2%

| {{Party stripe|Independent (US)}}John Carico (Independent) 0.2%

| {{Party stripe|Independent (US)}}Breton Phillips (Independent) 0.1%

| {{Party stripe|Independent (US)}}Kevin McCants (Independent) 0.1%

}}

Texas

| data-sort-value="Cruz, Ted" | Ted Cruz

| {{Party shading/Republican}} | Republican

| 2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Republican Party (US)}}{{Aye}} {{Sortname|Ted|Cruz}} (Republican) 50.9%
  • {{Party stripe|Democratic Party (US)}}Beto O'Rourke (Democratic) 48.3%
  • {{Party stripe|Libertarian Party (US)}}Neal Dikeman (Libertarian) 0.8%

}}

Utah

| data-sort-value="Hatch, Orrin" | Orrin Hatch

| {{Party shading/Republican}} | Republican

| 1976
1982
1988
1994
2000
2006
2012

| {{Party shading/Republican/Hold}} |Incumbent retired.
Republican hold.

| nowrap | {{Plainlist |

  • {{Party stripe|Republican Party (US)}}{{Aye}} {{Sortname|Mitt|Romney}} (Republican) 62.6%
  • {{Party stripe|Democratic Party (US)}}Jenny Wilson (Democratic) 30.9%
  • {{Party stripe|Constitution Party (US)}}Tim Aalders (Constitution) 2.7%
  • {{Party stripe|Libertarian Party (US)}}Craig Bowden (Libertarian) 2.6%
  • {{Party stripe|Independent American Party}}Reed McCandless (Independent American) 1.2%

}}

Vermont

| data-sort-value="Sanders, Bernie" | Bernie Sanders

| {{Party shading/Independent (US)}} | Independent

| 2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Independent (US)}}{{Aye}} {{Sortname|Bernie|Sanders}} (Independent) 67.4%
  • {{Party stripe|Republican Party (US)}}Lawrence Zupan (Republican) 27.5%

}}

Virginia

| data-sort-value="Kaine, Tim" | Tim Kaine

| {{Party shading/Democratic}} | Democratic

| 2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Tim|Kaine}} (Democratic) 57.1%
  • {{Party stripe|Republican Party (US)}}Corey Stewart (Republican) 41.1%
  • {{Party stripe|Libertarian Party (US)}}Matt Waters (Libertarian) 1.8%

}}

Washington

| data-sort-value="Cantwell, Maria" | Maria Cantwell

| {{Party shading/Democratic}} | Democratic

| 2000
2006
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Maria|Cantwell}} (Democratic) 58.4%
  • {{Party stripe|Republican Party (US)}}Susan Hutchison (Republican) 41.6%

}}

West Virginia

| data-sort-value="Manchin, Joe" | Joe Manchin

| {{Party shading/Democratic}} | Democratic

| 2010 United States Senate special election in West Virginia
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Joe|Manchin}} (Democratic) 49.6%
  • {{Party stripe|Republican Party (US)}}Patrick Morrisey (Republican) 46.3%
  • {{Party stripe|Libertarian Party (US)}}Rusty Hollen (Libertarian) 4.1%

}}

Wisconsin

| data-sort-value="Baldwin, Tammy" | Tammy Baldwin

| {{Party shading/Democratic}} | Democratic

| 2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Democratic Party (US)}}{{Aye}} {{Sortname|Tammy|Baldwin}} (Democratic) 55.4%
  • {{Party stripe|Republican Party (US)}}Leah Vukmir (Republican) 44.6%

}}

Wyoming

| data-sort-value="Barrasso, John" | John Barrasso

| {{Party shading/Republican}} | Republican

| 2007 {{Small|(appointed)}}
2008 United States Senate special election in Wyoming
2012

| Incumbent re-elected.

| nowrap | {{Plainlist |

  • {{Party stripe|Republican Party (US)}}{{Aye}} {{Sortname|John|Barrasso}} (Republican) 67.1%
  • {{Party stripe|Democratic Party (US)}}Gary Trauner (Democratic) 30.1%
  • {{Party stripe|Libertarian Party (US)}}Joe Porambo (Libertarian) 2.8%

}}

Closest races

In twelve races the margin of victory was under 10%.

class="wikitable sortable"

! State

! Party of winner

! Margin

Florida

| data-sort-value=.5 {{Party shading/Republican}} | Republican (flip)

| 0.12%

Arizona

| data-sort-value=-0.5 {{Party shading/Democratic}} | Democratic (flip)

| 2.34%

Texas

| data-sort-value=1 {{Party shading/Republican}} | Republican

| 2.57%

West Virginia

| data-sort-value=-1 {{Party shading/Democratic}} | Democratic

| 3.31%

Montana

| data-sort-value=-1 {{Party shading/Democratic}} | Democratic

| 3.55%

Nevada

| data-sort-value=-0.5 {{Party shading/Democratic}} | Democratic (flip)

| 5.03%

Missouri

| data-sort-value=0.5 {{Party shading/Republican}} | Republican (flip)

| 5.81%

Indiana

| data-sort-value=0.5 {{Party shading/Republican}} | Republican (flip)

| 5.89%{{Efn|Indiana was the "tipping point" state.}}

Michigan

| data-sort-value=-1 {{Party shading/Democratic}} | Democratic

| 6.51%

Ohio

| data-sort-value=-1 {{Party shading/Democratic}} | Democratic

| 6.85%

Mississippi (special)

| data-sort-value=1 {{Party shading/Republican}} | Republican

| 7.27%

California

| data-sort-value=-1 {{Party shading/Democratic}} | Democratic

| 8.33%{{Efn | name=fn5|Under California's "jungle primary" system, the general election was between two Democrats.}}

Arizona

{{Infobox election

| election_name = Arizona election

| country = Arizona

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Arizona

| previous_year = 2012

| next_election = 2024 United States Senate election in Arizona

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 64.85%

| nominee1 = Kyrsten Sinema

| image1 = Kyrsten Sinema (cropped).jpg

| party1 = Democratic Party (US)

| popular_vote1 = 1,191,100

| percentage1 = 49.96%

| nominee2 = Martha McSally

| image2 = Martha McSally official portrait (cropped 2).jpg

| party2 = Republican Party (US)

| popular_vote2 = 1,135,200

| percentage2 = 47.61%

| map_image = 2018 United States Senate election in Arizona results map by county.svg

| map_size = 200px

| map_caption = Sinema: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}

McSally: {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#D72F30|70–80%}}

| title = U.S. senator

| before_election = Jeff Flake

| before_party = Republican Party (US)

| after_election = Kyrsten Sinema

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Arizona}}

{{See also|List of United States senators from Arizona}}

One-term Republican Jeff Flake was elected with 49% of the vote in 2012. He chose not to run for re-election.{{Cite web | author=Jeff Flake | url=https://www.flake.senate.gov/public/index.cfm/press-releases?ID=5BA26227-82BA-406A-B5F3-3683A7619086 | title=Flake Announces Senate Future | publisher=United States senator Jeff Flake | date=October 24, 2017 | access-date=December 20, 2017 | archive-url=https://web.archive.org/web/20171025183415/https://www.flake.senate.gov/public/index.cfm/press-releases?ID=5BA26227-82BA-406A-B5F3-3683A7619086 | archive-date=October 25, 2017 | url-status=dead }}

U.S. Representative Martha McSally{{Cite web | url=https://apps.arizona.vote/electioninfo/elections/2018-general-election/federal/1350/4/0 | title=2018 General Election | publisher=Arizona Secretary of State | access-date=September 26, 2018}} won the Republican nomination in a three-way primary on August 28, 2018, against Joe Arpaio and Kelli Ward.

U.S. Representative Kyrsten Sinema easily secured the Democratic nomination.

Sinema defeated McSally by a slim margin; her victory became official only after six days of counting ballots.

{{Election box begin no change |title=Arizona Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Martha McSally

|votes = 357,626

|percentage = 54.57

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Kelli Ward

|votes = 180,926

|percentage = 27.61

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Joe Arpaio

|votes = 116,555

|percentage = 17.79

}}{{Election box write-in with party link no change

|votes = 191

|percentage = 0.03

}}{{Election box total no change

|votes = 655,298

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Arizona Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Kyrsten Sinema

|votes = 404,170

|percentage = 79.25

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Deedra Abboud

|votes = 105,800

|percentage = 20.75

}}{{Election box total no change

|votes = 509,970

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Arizona general election{{citation |title=Federal Elections 2018 |publisher=Federal Election Commission |date=October 2019 |url=https://www.fec.gov/resources/cms-content/documents/federalelections2018.pdf}}}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Kyrsten Sinema

|votes = 1,191,100

|percentage = 49.96%

|change = +3.76

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Martha McSally

|votes = 1,135,200

|percentage = 47.61%

|change = –1.62

}}{{Election box candidate with party link

|party = Green Party (US)

|candidate = Angela Green

|votes = 57,442

|percentage = 2.41%

|change = N/A

}}{{Election box write-in with party link

|votes = 566

|percentage = 0.02%

|change = +0.01

}}{{Election box total

|votes = 2,384,308

|percentage = 100.00%

}}{{Election box gain with party link no swing

|winner = Democratic Party (US)

|loser = Republican Party (US)

}}{{Election box end}}

{{Clear}}

California

{{Infobox election

| election_name = California election

| country = California

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in California

| previous_year = 2012

| next_election = 2024 United States Senate election in California

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 56.42%

| nominee1 = Dianne Feinstein

| image1 = Dianne Feinstein, official Senate photo 2.jpg

| party1 = Democratic Party (US)

| popular_vote1 = 6,019,422

| percentage1 = 54.16%

| nominee2 = Kevin de León

| image2 = KDL-Portrait.jpg

| party2 = Democratic Party (US)

| color2 =

| popular_vote2 = 5,093,942

| percentage2 = 45.84%

| map_image = 2018 United States Senate election in California results map by county.svg

| map_size = 250px

| map_caption = County results
Feinstein: {{legend0|#7996E2|50–60%}} {{legend0|#6674DE|60–70%}}

de León: {{legend0|#51C2C2|50–60%}} {{legend0|#2AACAC|60–70%}} {{legend0|#009696|70–80%}}

| title = U.S. senator

| before_election = Dianne Feinstein

| before_party = Democratic Party (US)

| after_election = Dianne Feinstein

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in California}}

{{See also|List of United States senators from California}}

Four-term Democrat Dianne Feinstein won a special election in 1992 and was elected to full terms in 1994, 2000, 2006, and 2012. She ran for re-election and advanced to the general election after securing the top spot in the June 5 jungle primary.{{Cite web | url=https://elections.cdn.sos.ca.gov/statewide-elections/2018-general/cert-list-candidates.pdf | title=Certified List of Candidates (Regular) | work=California Secretary of State | access-date=September 27, 2018}}

The June 5 primary ballot listed 32 candidates (Feinstein plus 31 challengers) in addition to 3 write-in candidates. There were 10 Democratic candidates, 11 Republican candidates, one Libertarian, one Peace and Freedom candidate, and 9 independent candidates. There was also a Green Party candidate who ran as a write-in.

President pro tempore of the California State Senate Kevin de León advanced to the general election for the right to challenge Feinstein after securing the second spot in the primary.

The 11 Republican candidates who ran in the primary combined for 33.2% of the vote. The top Republican candidate, James P. Bradley, received 8.3% of the vote, which put him in 3rd place at 3.8% behind the second-place finisher, Kevin DeLeon.{{Cite web | url=https://elections.cdn.sos.ca.gov/statewide-elections/2018-primary/cert-list-candidates.pdf | title=Certified List of Candidates (Primaries) | work=California Secretary of State | access-date=February 5, 2019}}

On November 6, Dianne Feinstein was elected to a fifth term, defeating Kevin de León.

{{Election box begin no change |title=California blanket primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Dianne Feinstein (incumbent)

|votes = 2,947,035

|percentage = 44.18

}}{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Kevin de León

|votes = 805,446

|percentage = 12.07

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = James P. Bradley

|votes = 556,252

|percentage = 8.34

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Arun K. Bhumitra

|votes = 350,815

|percentage = 5.26

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Paul A. Taylor

|votes = 323,534

|percentage = 4.85

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Erin Cruz

|votes = 267,494

|percentage = 4.01

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Tom Palzer

|votes = 205,183

|percentage = 3.08

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Alison Hartson

|votes = 147,061

|percentage = 2.20

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Rocky De La Fuente

|votes = 135,279

|percentage = 2.03

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Pat Harris

|votes = 126,947

|percentage = 1.90

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = John "Jack" Crew

|votes = 93,808

|percentage = 1.41

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Patrick Little

|votes = 89,867

|percentage = 1.35

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Kevin Mottus

|votes = 87,646

|percentage = 1.31

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Jerry Joseph Laws

|votes = 67,140

|percentage = 1.01

}}{{Election box candidate with party link no change

|party = Libertarian Party (US)

|candidate = Derrick Michael Reid

|votes = 60,000

|percentage = 0.90

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Adrienne Nicole Edwards

|votes = 56,172

|percentage = 0.84

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Douglas Howard Pierce

|votes = 42,671

|percentage = 0.64

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Mario Nabliba

|votes = 39,209

|percentage = 0.59

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = David Hildebrand

|votes = 30,305

|percentage = 0.45

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Donnie O. Turner

|votes = 30,101

|percentage = 0.45

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Herbert G. Peters

|votes = 27,468

|percentage = 0.41

}}{{Election box candidate with party link no change

|party = No party preference

|candidate = David Moore

|votes = 24,614

|percentage = 0.37

}}{{Election box candidate with party link no change

|party = No party preference

|candidate = Ling Ling Shi

|votes = 23,506

|percentage = 0.35

}}{{Election box candidate with party link no change

|party = Peace and Freedom Party

|candidate = John Parker

|votes = 22,825

|percentage = 0.34

}}{{Election box candidate with party link no change

|party = No party preference

|candidate = Lee Olson

|votes = 20,393

|percentage = 0.31

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Gerald Plummer

|votes = 18,234

|percentage = 0.27

}}{{Election box candidate with party link no change

|party = No party preference

|candidate = Jason M. Hanania

|votes = 18,171

|percentage = 0.27

}}{{Election box candidate with party link no change

|party = No party preference

|candidate = Don J. Grundmann

|votes = 15,125

|percentage = 0.23

}}{{Election box candidate with party link no change

|party = No party preference

|candidate = Colleen Shea Fernald

|votes = 13,536

|percentage = 0.20

}}{{Election box candidate with party link no change

|party = No party preference

|candidate = Rash Bihari Ghosh

|votes = 12,557

|percentage = 0.19

}}{{Election box candidate with party link no change

|party = No party preference

|candidate = Tim Gildersleeve

|votes = 8,482

|percentage = 0.13

}}{{Election box candidate with party link no change

|party = No party preference

|candidate = Michael Fahmy Girgis

|votes = 2,986

|percentage = 0.04

}}{{Election box write-in with party link no change

|votes = 863

|percentage = 0.01

}}{{Election box total no change

|votes = 6,670,720

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=California general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Dianne Feinstein (incumbent)

|votes = 6,019,422

|percentage = 54.16%

|change = –8.36

}}{{Election box candidate with party link

|party = Democratic Party (US)

|candidate = Kevin de León

|votes = 5,093,942

|percentage = 45.84%

|change = N/A

}}{{Election box total

|votes = 11,113,364

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Connecticut

{{Infobox election

| election_name = Connecticut election

| country = Connecticut

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Connecticut

| previous_year = 2012

| next_election = 2024 United States Senate election in Connecticut

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 63.58%

| nominee1 = Chris Murphy

| image1 = Chris Murphy, official portrait, 113th Congress (cropped).jpg

| party1 = Democratic Party (US)

| popular_vote1 = 825,579

| percentage1 = 59.53%

| nominee2 = Matthew Corey

| image2 =

| party2 = Republican Party (US)

| popular_vote2 = 545,717

| percentage2 = 39.35%

| map_image = {{switcher

|220px

|County results

|File:2018 United States Senate election in Connecticut results map by municipality.svg

|Municipality results

|default=1

}}

| map_size = 200px

| map_caption = Murphy: {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}} {{legend0|#0d056c|>90%}}
Corey: {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}

| title = U.S. senator

| before_election = Chris Murphy

| before_party = Democratic Party (US)

| after_election = Chris Murphy

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Connecticut}}

{{See also|List of United States senators from Connecticut}}

One-term Democrat Chris Murphy was elected with 55% of the vote in 2012. He ran for re-election.{{Cite web | url=http://www.newhavenindependent.org/index.php/archives/entry/murphy_trans | title=Murphy Navigates A Changed World | work=New Haven Independent | last=Bass | first=Paul | date=December 23, 2016 | access-date=December 29, 2016}}

Businessmen Matthew Corey{{Cite web | date=August 22, 2017 | url=http://www.courant.com/politics/capitol-watch/hc-pol-matt-corey-ct-senate-20170822-story.html | title=Corey Planning U.S. Senate Run Against Murphy | work=Hartford Courant | last=Altimari | first=Danielle | access-date=August 22, 2017}} received the Republican nomination.

Chris Murphy was elected to a second term, winning nearly 60% of the vote.{{Cite news | url=https://www.nytimes.com/elections/results/connecticut-senate | title=Connecticut U.S. Senate Election Results | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Connecticut Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Matthew Corey

|votes = 99,899

|percentage = 76.54

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Dominic Rapini

|votes = 30,624

|percentage = 23.46

}}{{Election box total no change

|votes = 130,523

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Connecticut general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Chris Murphy (incumbent)

|votes = 825,579

|percentage = 59.53%

|change = +4.71

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Matthew Corey

|votes = 545,717

|percentage = 39.35%

|change = –3.72

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Richard Lion

|votes = 8,838

|percentage = 0.64%

|change = –1.02

}}{{Election box candidate with party link

|party = Green Party (US)

|candidate = Jeff Russell

|votes = 6,618

|percentage = 0.48%

|change = N/A

}}{{Election box write-in with party link

|votes = 88

|percentage = 0.01%

|change = –0.44

}}{{Election box total

|votes = 1,386,840

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Delaware

{{Infobox election

| election_name = Delaware election

| country = Delaware

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Delaware

| previous_year = 2012

| next_election = 2024 United States Senate election in Delaware

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 52.18%

| image1 = Tom Carper, official portrait, 112th Congress (cropped).jpg

| nominee1 = Tom Carper

| party1 = Democratic Party (US)

| popular_vote1 = 217,385

| percentage1 = 59.95%

| image2 = 3x4.svg

| nominee2 = Rob Arlett

| party2 = Republican Party (US)

| popular_vote2 = 137,127

| percentage2 = 37.81%

| map_image = Delaware state election results.svg

| map_size = 200px

| map_caption = Carper: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}
Arlett: {{legend0|#E27F7F|50–60%}}

| title = U.S. senator

| before_election = Tom Carper

| before_party = Democratic Party (US)

| after_election = Tom Carper

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Delaware}}

{{See also|List of United States senators from Delaware}}

Three-term Democrat Tom Carper won re-election with 66% of the vote in 2012. He announced he was running for re-election during an interview on MSNBC on July 24, 2017.{{Cite news | title=GENERAL ELECTION June 11, 2018 FILED CANDIDATES BY OFFICE | url=https://elections.delaware.gov/reports/genl_fcddt.shtml | access-date=September 27, 2018 | publisher=Florida Department of State}} He defeated Dover community activist Kerri Evelyn Harris for the Democratic nomination. Sussex County Councilman Robert Arlett won the Republican nomination.

Tom Carper defeated Arlett, winning 60% of the vote.{{Cite news | url=https://www.nytimes.com/elections/results/delaware-senate | title=Delaware U.S. Senate Election Results | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Delaware Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Tom Carper (incumbent)

|votes = 53,635

|percentage = 64.59

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Kerri Evelyn Harris

|votes = 29,407

|percentage = 35.41

}}{{Election box total no change

|votes = 83,042

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Delaware Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Rob Arlett

|votes = 25,284

|percentage = 66.77

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Gene Truono

|votes = 10,587

|percentage = 27.96

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Rocky De La Fuente

|votes = 1,998

|percentage = 5.28

}}{{Election box total no change

|votes = 37,870

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Delaware general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Tom Carper (incumbent)

|votes = 217,385

|percentage = 59.95%

|change = –6.47

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Rob Arlett

|votes = 137,127

|percentage = 37.82%

|change = +8.87

}}{{Election box candidate with party link

|party = Green Party (US)

|candidate = Demitri Theodoropoulos

|votes = 4,170

|percentage = 1.15%

|change = +0.35

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Nadine Frost

|votes = 3,910

|percentage = 1.08%

|change = N/A

}}{{Election box write-in with party link

|votes = 14

|percentage = 0.00%

|change = N/A

}}{{Election box total

|votes = 362,606

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Florida

{{Infobox election

| election_name = Florida election

| country = Florida

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Florida

| previous_year = 2012

| next_election = 2024 United States Senate election in Florida

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 61.68%

| image1 = Official Portrait of Senator Rick Scott (R-FL).jpg

| nominee1 = Rick Scott

| party1 = Republican Party (US)

| popular_vote1 = 4,099,505

| percentage1 = 50.05%

| image2 = NASA Administrator Bill Nelson Official Portrait (NHQ202105170001).jpg

| nominee2 = Bill Nelson

| party2 = Democratic Party (US)

| popular_vote2 = 4,089,472

| percentage2 = 49.93%

| map_image = File:2018 United States Senate election in Florida results map by county.svg

| map_size = 240px

| map_caption = Scott: {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}} {{legend0|#c21b18|80–90%}}
Nelson: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}

| title = U.S. senator

| before_election = Bill Nelson

| before_party = Democratic Party (US)

| after_election = Rick Scott

| after_party = Republican Party (US)

}}

{{Main|2018 United States Senate election in Florida}}

{{See also|List of United States senators from Florida}}

Three-term Democrat Bill Nelson was re-elected with 55% of the vote in 2012. He sought re-election to a fourth term in office.{{Cite news | title=Candidate Listing for 2018 General Election | url=http://dos.elections.myflorida.com/candidates/CanList.asp | access-date=April 10, 2018 | publisher=Florida Department of State}}

Florida Governor Rick Scott won the Republican nomination. First elected in 2010 and re-elected in 2014, Scott's term as Governor of Florida was set to end by January 2019, due to term limits.

Edward Janowski was running as an independent, but did not qualify.

Scott led among ballots tallied on election night, but given the close margins of the race recounts were ordered.{{Cite news | url=https://www.pressherald.com/2018/11/07/florida-senate-race-goes-to-a-recount | title=Heated Florida Senate race goes to a recount | date=November 7, 2018 | work=Press Herald | access-date=December 2, 2018 | language=en-US}} Final recount numbers were released following a machine and hand recount with Rick Scott maintaining a lead.{{Cite news | url=https://www.npr.org/2018/11/18/668704045/republican-rick-scott-wins-florida-senate-race-as-recount-comes-to-an-end | title=Republican Rick Scott Wins Florida Senate Seat Over Incumbent Bill Nelson | work=NPR.org | access-date=December 2, 2018 | language=en}} On November 18, Nelson conceded to Scott.{{Cite web | url=https://www.foxnews.com/politics/bill-nelson-concedes-florida-senate-race-to-rick-scott-after-manual-recount | title=Bill Nelson concedes Florida Senate race to Rick Scott after manual recount | first=Barnini | last=Chakraborty | date=November 18, 2018 | publisher=Fox News}} Two days later, election results were certified by the state, cementing Scott's win.{{Cite news | url=https://talkingpointsmemo.com/news/florida-election-results-certified | title=Florida's Election Results Certified After Tumultuous Recounts | work=Talking Points Memo | access-date=December 2, 2018 | language=en-US}}

{{Election box begin no change |title=Florida Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Rick Scott

|votes = 1,456,187

|percentage = 88.61

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Rocky De La Fuente

|votes = 187,209

|percentage = 11.39

}}{{Election box total no change

|votes = 1,643,396

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Florida general election}}

{{Election box winning candidate with party link

|party = Republican Party (US)

|candidate = Rick Scott

|votes = 4,099,505

|percentage = 50.05%

|change = +7.82

}}{{Election box candidate with party link

|party = Democratic Party (US)

|candidate = Bill Nelson (incumbent)

|votes = 4,089,472

|percentage = 49.93%

|change = –5.30

}}{{Election box write-in with party link

|votes = 1,028

|percentage = 0.01%

|change = +0.01

}}{{Election box total

|votes = 8,190,005

|percentage = 100.00%

}}{{Election box gain with party link no swing

|winner = Republican Party (US)

|loser = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Hawaii

{{Infobox election

| election_name = Hawaii election

| country = Hawaii

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Hawaii

| previous_year = 2012

| next_election = 2024 United States Senate election in Hawaii

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 51.32%

| image1 = Mazie Hirono, official portrait, 113th Congress (cropped).jpg

| nominee1 = Mazie Hirono

| party1 = Democratic Party (US)

| popular_vote1 = 276,316

| percentage1 = 71.15%

| image2 = 3x4.svg

| nominee2 = Ron Curtis

| party2 = Republican Party (US)

| popular_vote2 = 112,035

| percentage2 = 28.85%

| map_image = 2018 United States Senate election in Hawaii results map by county.svg

| map_size = 250px

| map_caption = County results
Hirono: {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}

| title = U.S. senator

| before_election = Mazie Hirono

| before_party = Democratic Party (US)

| after_election = Mazie Hirono

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Hawaii}}

{{See also|List of United States senators from Hawaii}}

One-term Democrat Mazie Hirono was elected with 63% of the vote in 2012. She ran.{{Cite web | url=https://olvr.hawaii.gov/Controls/CandidateFiling.aspx?elid=82 | title=Candidates Filing Report | work=Hawaii Office of Election | access-date=June 3, 2018}}

Ron Curtis was the Republican nominee.

Hirono was elected to a second term by a landslide.

{{Election box begin no change |title=Hawaii Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Mazie Hirono (incumbent)

|votes = 201,679

|percentage = 100.00

}}{{Election box total no change

|votes = 201,679

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Hawaii Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Ron Curtis

|votes = 6,370

|percentage = 23.73

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Consuelo Anderson

|votes = 5,172

|percentage = 19.26

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Robert C. Helsham Sr.

|votes = 3,988

|percentage = 14.85

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Thomas E. White

|votes = 3,661

|percentage = 13.64

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Rocky De La Fuente

|votes = 3,065

|percentage = 11.42

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = George L. Berish

|votes = 1,658

|percentage = 6.18

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Michael R. Hodgkiss

|votes = 1,576

|percentage = 5.87

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Eddie Pirkowski

|votes = 1,358

|percentage = 5.06

}}{{Election box total no change

|votes = 26,848

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Hawaii general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Mazie Hirono (incumbent)

|votes = 276,316

|percentage = 71.15%

|change = +8.55

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Ron Curtis

|votes = 112,035

|percentage = 28.85%

|change = –8.55

}}{{Election box total

|votes = 388,351

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Indiana

{{Infobox election

| election_name = Indiana election

| country = Indiana

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Indiana

| previous_year = 2012

| next_election = 2024 United States Senate election in Indiana

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 50.42%

| nominee2 = Joe Donnelly

| image2 = Joe Donnelly, official portrait, 113th Congress (cropped).jpg

| party2 = Democratic Party (US)

| popular_vote2 = 1,023,553

| percentage2 = 44.84%

| nominee1 = Mike Braun

| image1 = Mike Braun, Official Portrait, 116th Congress.jpg

| party1 = Republican Party (US)

| popular_vote1 = 1,158,000

| percentage1 = 50.73%

| map_image = 2018 United States Senate election in Indiana results map by county.svg

| map_size = 250px

| map_caption = County results
Braun: {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}
Donnelly: {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}

| title = U.S. senator

| before_election = Joe Donnelly

| before_party = Democratic Party (US)

| after_election = Mike Braun

| after_party = Republican Party (US)

}}

{{Main|2018 United States Senate election in Indiana}}

{{See also|List of United States senators from Indiana}}

One-term Democrat Joe Donnelly was elected with 50.04% of the vote in 2012. He ran. He won the Democratic primary unopposed.{{Cite web | url=https://www.in.gov/sos/elections/files/Candidate_List_Abbreviated_20180613_102139AM.pdf | title=Indiana Secretary of State Official Candidates | publisher=Indiana Secretary of State | date=February 10, 2018 | access-date=February 10, 2018 | archive-date=June 15, 2018 | archive-url=https://web.archive.org/web/20180615215225/https://www.in.gov/sos/elections/files/Candidate_List_Abbreviated_20180613_102139AM.pdf | url-status=dead }}

State Representative Mike Braun won the May 8 Republican primary. U.S. Representatives Luke Messer{{Cite web | url=https://www.in.gov/sos/elections/files/2018%20Primary%20Candidate%20Abbreviated%20List%20FINAL%20WITH%20WITHDRAWALS.pdf | title=Candidate List - 2018 Primary Election | work=Indiana Secretary of State | date=February 12, 2018 | access-date=February 12, 2018 | archive-date=November 25, 2020 | archive-url=https://web.archive.org/web/20201125230300/https://www.in.gov/sos/elections/files/2018%20Primary%20Candidate%20Abbreviated%20List%20FINAL%20WITH%20WITHDRAWALS.pdf | url-status=dead }} and Todd Rokita also ran for the Republican nomination.

James Johnson ran as an independent.

Braun won election with 51% of the vote, defeating Joe Donnelly.{{Cite news | url=https://www.politico.com/election-results/2018/indiana | title=Indiana Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Indiana Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Joe Donnelly (incumbent)

|votes = 284,621

|percentage = 100.00

}}{{Election box total no change

|votes = 284,621

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Indiana Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Mike Braun

|votes = 208,602

|percentage = 41.17

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Todd Rokita

|votes = 151,967

|percentage = 29.99

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Luke Messer

|votes = 146,131

|percentage = 28.84

}}{{Election box total no change

|votes = 506,700

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Indiana general election}}

{{Election box winning candidate with party link

|party = Republican Party (US)

|candidate = Mike Braun

|votes = 1,158,000

|percentage = 50.73%

|change = +6.45

}}{{Election box candidate with party link

|party = Democratic Party (US)

|candidate = Joe Donnelly (incumbent)

|votes = 1,023,553

|percentage = 44.84%

|change = –5.20

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Lucy Brenton

|votes = 100,942

|percentage = 4.42%

|change = –1.26

}}{{Election box write-in with party link

|votes = 70

|percentage = 0.00%

|change = N/A

}}{{Election box total

|votes = 2,282,565

|percentage = 100.00%

}}{{Election box gain with party link no swing

|winner = Republican Party (US)

|loser = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Maine

{{Infobox election

| election_name = Maine election

| country = Maine

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Maine

| previous_year = 2012

| next_election = 2024 United States Senate election in Maine

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 59.96%

| nominee1 = Angus King

| image1 = Angus King, official portrait, 113th Congress.jpg

| party1 = Independent politician

| popular_vote1 = 344,575

| percentage1 = 54.31%

| nominee2 = Eric Brakey

| image2 = Eric Brakey by Gage Skidmore.jpg

| party2 = Republican Party (US)

| popular_vote2 = 223,502

| percentage2 = 35.23%

| nominee3 = Zak Ringelstein

| image3 = Zak Ringelstein in Biddeford, Maine (cropped).jpg

| party3 = Democratic Party (US)

| popular_vote3 = 66,268

| percentage3 = 10.45%

| map_image = {{switcher

|300px

|County results

|x300px

|Municipality results

|default=1}}

| map_caption = King: {{legend0|#c6c6c6|40–50%}} {{legend0|#a9a9a9|50–60%}} {{legend0|#8d8d8d|60–70%}} {{legend0|#737373|70–80%}} {{legend0|#5a5a5a|80–90%}} {{legend0|#424242|>90%}}
Brakey: {{legend0|#F2B4BE|40–50%}}{{legend0|#E27F7F|50–60%}} {{legend0|#D75D5D|60–70%}} {{legend0|#D72F30|70–80%}} {{legend0|#C21B18|80–90%}} {{legend0|#a80000|>90%}}
Tie: {{legend0|#d2b1d9}}

| title = U.S. senator

| before_election = Angus King

| before_party = Independent politician

| after_election = Angus King

| after_party = Independent politician

}}

{{Main|2018 United States Senate election in Maine}}

{{See also|List of United States senators from Maine}}

One-term Independent Senator Angus King was elected in a three-way race with 53% of the vote in 2012. King has caucused with the Democratic Party since taking office in 2013, but he has left open the possibility of caucusing with the Republican Party in the future.{{Cite news | last1=Blake | first1=Aaron | title=Angus King and Joe Manchin are sticking with the Democrats. Because, of course. | url=https://www.washingtonpost.com/blogs/the-fix/wp/2014/11/05/angus-king-and-joe-manchin-are-sticking-with-the-democrats-because-of-course | access-date=May 28, 2015 | newspaper=The Washington Post | date=November 5, 2014}}

State Senator Eric Brakey ran unopposed for the Republican nomination.{{Cite web | url=https://www.maine.gov/sos/cec/elec/upcoming/2018-11FinalCandidateList.xlsx | title=Maine Candidates Lists | work=Lieutenant Governor Election | access-date=September 2, 2018}}

Public school teacher and founder of UClass Zak Ringelstein ran unopposed for the Democratic nomination.

The election was conducted with ranked choice voting, as opposed to "First-past-the-post voting", after Maine voters passed a citizen referendum approving the change in 2016{{Cite news | title=Maine became the first state in the country Tuesday to pass ranked choice voting | url=https://www.boston.com/news/politics/2016/11/10/maine-became-the-first-state-in-the-country-to-pass-ranked-choice-voting | access-date=November 17, 2016 | newspaper=Boston Globe | date=November 10, 2016}} and a June 2018 referendum sustaining the change.{{Cite news | title=Maine Voters Overrule Their Leaders | url=https://www.theatlantic.com/politics/archive/2018/06/maine-lepage-ranked-choice-voting/562871 | access-date=June 24, 2018 | newspaper=The Atlantic | date= June 15, 2018}}

King was easily re-elected with over 50% of the vote.

{{Election box begin no change |title=Maine Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Zak Ringelstein

|votes = 89,841

|percentage = 100.00

}}{{Election box total no change

|votes = 89,841

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Maine Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Eric Brakey

|votes = 59,853

|percentage = 100.00

}}{{Election box total no change

|votes = 59,853

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Maine general election}}

{{Election box winning candidate with party link

|party = Independent politician

|candidate = Angus King (incumbent)

|votes = 344,575

|percentage = 54.31%

|change = +1.42

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Eric Brakey

|votes = 223,502

|percentage = 35.23%

|change = +4.48

}}{{Election box candidate with party link

|party = Democratic Party (US)

|candidate = Zak Ringelstein

|votes = 66,268

|percentage = 10.45%

|change = –2.81

}}{{Election box write-in with party link

|votes = 64

|percentage = 0.01%

|change = N/A

}}{{Election box total

|votes = 634,409

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Independent politician

}}{{Election box end}}

{{Clear}}

Maryland

{{Main|2018 United States Senate election in Maryland}}

{{See also|List of United States senators from Maryland}}

{{Infobox election

| election_name = Maryland election

| country = Maryland

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Maryland

| previous_year = 2012

| next_election = 2024 United States Senate election in Maryland

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 58.17%

| nominee1 = Ben Cardin

| image1 = Ben Cardin official Senate portrait.jpg

| party1 = Democratic Party (US)

| popular_vote1 = 1,491,614

| percentage1 = 64.86%

| nominee2 = Tony Campbell

| image2 = Tony Campbell.jpg

| party2 = Republican Party (US)

| popular_vote2 = 697,107

| percentage2 = 30.31%

| map_image = 2018 United States Senate election in Maryland results map by county.svg

| map_size = 250px

| map_caption = Cardin: {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}} {{legend0|#0E0496|>90%}}
Campbell: {{legend0|#E27F7F|50–60%}} {{legend0|#D72F30|70–80%}}

| title = U.S. senator

| before_election = Ben Cardin

| before_party = Democratic Party (US)

| after_election = Ben Cardin

| after_party = Democratic Party (US)

}}

Two-term Democrat Ben Cardin was re-elected with 56% of the vote in 2012. He won the Democratic primary.{{Cite news | last=Emba | first=Christine | url=https://www.washingtonpost.com/election-results/maryland/ | title=Maryland election results 2018 | newspaper=The Washington Post | access-date=November 10, 2018}}

Tony Campbell, Evan Cronhardt, Nnabu Eze, Gerald Smith, and Blaine Taylor{{Cite web | url=http://elections.state.md.us/elections/2018/primary_candidates/gen_cand_lists_2018_1_007-.html | title=2018 Candidate Listing | last=Elections | first=Maryland State Board of | website=elections.state.md.us | language=en | access-date=January 16, 2018}} were seeking the Republican nomination, with Campbell winning.

Arvin Vohra, vice chairman of the Libertarian National Committee, sought the Libertarian Party nomination.

Independents Neal Simon and Edward Shlikas{{Citation needed|date=April 2019}}, and Michael B Puskar ran.

Cardin won re-election to a third term in office.{{Cite news | url=https://www.politico.com/election-results/2018/maryland | title=Maryland Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Maryland Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Ben Cardin (incumbent)

|votes = 477,441

|percentage = 80.28

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Chelsea Manning

|votes = 34,611

|percentage = 5.82

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Jerome Segal

|votes = 20,027

|percentage = 3.37

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Debbie Wilson

|votes = 18,953

|percentage = 3.19

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Marcia H. Morgan

|votes = 16,047

|percentage = 2.70

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Lih Young

|votes = 9,874

|percentage = 1.66

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Richard Vaughn

|votes = 9,480

|percentage = 1.59

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Erik Jetmir

|votes = 8,259

|percentage = 1.39

}}{{Election box total no change

|votes = 594,692

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Maryland Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Tony Campbell

|votes = 51,426

|percentage = 29.22

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Chris Chaffee

|votes = 42,328

|percentage = 24.05

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Christina J. Grigorian

|votes = 30,756

|percentage = 17.48

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = John Graziani

|votes = 15,435

|percentage = 8.77

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Blaine Taylor

|votes = 8,848

|percentage = 5.03

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Gerald I. Smith Jr.

|votes = 7,564

|percentage = 4.30

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Brian Charles Vaeth

|votes = 5,411

|percentage = 3.07

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Evan M. Cronhardt

|votes = 4,445

|percentage = 2.53

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Bill Krehnbrink

|votes = 3,606

|percentage = 2.05

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Nnabu Eze

|votes = 3,442

|percentage = 1.96

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Albert Binyahmin Howard

|votes = 2,720

|percentage = 1.55

}}{{Election box total no change

|votes = 175,981

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Maryland general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Ben Cardin (incumbent)

|votes = 1,491,614

|percentage = 64.86%

|change = +8.88

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Tony Campbell

|votes = 697,017

|percentage = 30.31%

|change = +3.98

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Neal Simon

|votes = 85,964

|percentage = 3.74%

|change = N/A

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Arvin Vohra

|votes = 22,943

|percentage = 1.00%

|change = –0.22

}}{{Election box write-in with party link

|votes = 2,351

|percentage = 0.10%

|change = ±0.00

}}{{Election box total

|votes = 2,299,889

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Massachusetts

{{Infobox election

| election_name = Massachusetts election

| country = Massachusetts

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Massachusetts

| previous_year = 2012

| next_election = 2024 United States Senate election in Massachusetts

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 59.17%

| image1 = x150px

| nominee1 = Elizabeth Warren

| party1 = Democratic Party (US)

| popular_vote1 = 1,633,371

| percentage1 = 60.34%

| image2 = x150px

| nominee2 = Geoff Diehl

| party2 = Republican Party (US)

| popular_vote2 = 979,210

| percentage2 = 36.17%

| map_image = {{switcher

|300px

|County results

|File:2018 United States Senate Election in Massachusetts by Municipality.svg

|Municipality results

|default=1

}}

| map_size = 250px

| map_caption = Warren: {{legend0|#A5B0FF|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}} {{legend0|#0D0596|>90%}}
Diehl: {{legend0|#ffb2b2|40–50%}} {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}}

| title = U.S. senator

| before_election = Elizabeth Warren

| before_party = Democratic Party (US)

| after_election = Elizabeth Warren

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Massachusetts}}

{{See also|List of United States senators from Massachusetts}}

One-term Democrat Elizabeth Warren was elected with 54% of the vote in 2012. She ran for re-election.{{Cite web | url=https://www.sec.state.ma.us/ele/ele18/state_primary-democratic18.htm | title=2018 State Primary - Democratic Candidates for Nomination | work=Secretary of the Commonwealth of Massachusetts | access-date=June 6, 2018}}

State Representative Geoff Diehl,{{Cite web | url=https://www.sec.state.ma.us/ele/ele18/state_primary-republican18.htm | title=2018 State Primary - Republican Candidates for Nomination | work=Secretary of the Commonwealth of Massachusetts | access-date=June 6, 2018}} attorney and founder of Better for America, John Kingston and former Romney aide Beth Lindstrom, ran for the Republican nomination. Diehl won the Republican nomination.

Shiva Ayyadurai{{Cite web | url=https://twitter.com/va_shiva/status/929458149530226690 | title=Dr. Shiva Ayyadurai on Twitter: "Today Shiva 4 Senate dumped the MA GOP Establishment and Declared Our Independence. | date=November 11, 2017 | work=Twitter | access-date=November 11, 2017}} ran as an independent. Shiva started as in early 2017 as the first Republican in the race, but went independent in November 2017.

Warren defeated Diehl, winning a second term.{{Cite news | url=https://www.politico.com/election-results/2018/massachusetts | title=Massachusetts Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Massachusetts Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Elizabeth Warren (incumbent)

|votes = 590,835

|percentage = 98.08

}}{{Election box write-in with party link no change

|votes = 11,558

|percentage = 1.92

}}{{Election box total no change

|votes = 602,393

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Massachusetts Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Geoff Diehl

|votes = 144,043

|percentage = 55.15

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = John Kingston III

|votes = 69,636

|percentage = 26.66

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Beth Joyce Lindstrom

|votes = 46,693

|percentage = 17.88

}}{{Election box write-in with party link no change

|votes = 798

|percentage = 0.31

}}{{Election box total no change

|votes = 261,170

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Massachusetts general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Elizabeth Warren (incumbent)

|votes = 1,633,371

|percentage = 60.34%

|change = +6.60

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Geoff Diehl

|votes = 979,210

|percentage = 36.17%

|change = –10.02

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Shiva Ayyadurai

|votes = 91,710

|percentage = 3.39%

|change = N/A

}}{{Election box write-in with party link

|votes = 2,799

|percentage = 0.10%

|change = +0.03

}}{{Election box total

|votes = 2,707,090

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Michigan

{{Infobox election

| election_name = Michigan election

| country = Michigan

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Michigan

| previous_year = 2012

| next_election = 2024 United States Senate election in Michigan

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 56.72%

| nominee1 = Debbie Stabenow

| image1 = Debbie Stabenow, official photo, 116th Congress (cropped).jpg

| party1 = Democratic Party (US)

| popular_vote1 = 2,214,478

| percentage1 = 52.26%

| nominee2 = John James

| image2 = File:Donald Trump, with John Edward James, Oval Office (September 2018) (cropped).jpg

| party2 = Republican Party (US)

| popular_vote2 = 1,938,818

| percentage2 = 45.76%

| map_image = 2018 United States Senate election in Michigan results map by county.svg

| map_size = 250px

| map_caption = Stabenow: {{legend0|#a5b0ff|40-50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}

James: {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}

| title = U.S. senator

| before_election = Debbie Stabenow

| before_party = Democratic Party (US)

| after_election = Debbie Stabenow

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Michigan}}

{{See also|List of United States senators from Michigan}}

Three-term Democrat Debbie Stabenow was re-elected with 59% of the vote in 2012.{{Cite news | url=http://miboecfr.nictusa.com/election/candlist/2018PRI_CANDLIST.html | title=2018 Michigan Candidate Listing | work=Michigan Secretary of State | access-date=April 24, 2018}} She was renominated without Democratic opposition. On the Republican side, businessman John James won the nomination.

In the final months of the election, polls showed the race was beginning to narrow. Ultimately, Stabenow was re-elected, defeating James, with a majority of the vote.

{{Election box begin no change |title=Michigan Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Debbie Stabenow (incumbent)

|votes = 1,045,450

|percentage = 100.00

}}{{Election box total no change

|votes = 1,045,450

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Michigan Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = John James

|votes = 518,564

|percentage = 54.67

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Sandy Pensler

|votes = 429,885

|percentage = 45.32

}}{{Election box write-in with party link no change

|votes = 57

|percentage = 0.01

}}{{Election box total no change

|votes = 948,506

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Michigan general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Debbie Stabenow (incumbent)

|votes = 2,214,478

|percentage = 52.26%

|change = –6.54

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = John James

|votes = 1,938,818

|percentage = 45.76%

|change = +7.78

}}{{Election box candidate with party link

|party = Green Party (US)

|candidate = Marcia Squier

|votes = 40,204

|percentage = 0.95%

|change = +0.35

}}{{Election box candidate with party link

|party = US Taxpayers Party

|candidate = George Huffman III

|votes = 27,251

|percentage = 0.64%

|change = +0.08

}}{{Election box candidate with party link

|party = Natural Law Party (US)

|candidate = John Howard Wilhelm

|votes = 16,502

|percentage = 0.39%

|change = +0.15

}}{{Election box write-in with party link

|votes = 18

|percentage = 0.00%

|change = ±0.00

}}{{Election box total

|votes = 4,237,271

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Minnesota

= Minnesota (regular) =

{{Infobox election

| election_name = Minnesota general election

| country = Minnesota

| flag_year = 1983

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Minnesota

| previous_year = 2012

| next_election = 2024 United States Senate election in Minnesota

| next_year = 2024

| election_date =

| image_size = x136px

| turnout = 63.89%

| nominee1 = Amy Klobuchar

| image1 = Amy Klobuchar, official portrait, 113th Congress (cropped 2).jpg

| party1 = Minnesota Democratic–Farmer–Labor Party

| popular_vote1 = 1,566,174

| percentage1 = 60.31%

| nominee2 = Jim Newberger

| image2 = JimNewberger (cropped).jpg

| party2 = Republican Party (US)

| popular_vote2 = 940,437

| percentage2 = 36.21%

| map_image = File:2018 United States Senate election in Minnesota results map by county.svg

| map_size = 250px

| map_caption = Klobuchar: {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}
Newberger: {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}

| title = U.S. senator

| before_election = Amy Klobuchar

| before_party = Minnesota Democratic–Farmer–Labor Party

| after_election = Amy Klobuchar

| after_party = Minnesota Democratic–Farmer–Labor Party

}}

{{Main|2018 United States Senate election in Minnesota}}

{{See also|List of United States senators from Minnesota|2018 United States Senate special election in Minnesota}}

Two-term Democrat Amy Klobuchar was re-elected with 65% of the vote in 2012. She ran for re-election.{{Cite news | url=https://candidates.sos.state.mn.us/CandidateFilingResults.aspx?county=&municipality=&schooldistrict=&hospitaldistrict=&level=1&party=0&federal=True&judicial=False&executive=False&senate=False&representative=False&title=&office=0&candidateid=0 | title=Candidate Filings - 2018 State General Election | work=Minnesota Secretary of State | access-date=May 31, 2018}}

State Representative Jim Newberger ran for the Republican nomination.

Klobuchar was easily re-elected.{{Cite news | url=https://www.politico.com/election-results/2018/minnesota | title=Minnesota Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Minnesota Democratic (DFL) primary}}

{{Election box winning candidate with party link no change

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Amy Klobuchar (incumbent)

|votes = 557,306

|percentage = 95.70

}}{{Election box candidate with party link no change

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Steve Carlson

|votes = 9,934

|percentage = 1.71

}}{{Election box candidate with party link no change

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Stephen A. Emery

|votes = 7,047

|percentage = 1.21

}}{{Election box candidate with party link no change

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = David Robert Groves

|votes = 4,511

|percentage = 0.77

}}{{Election box candidate with party link no change

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Leonard J. Richards

|votes = 3,552

|percentage = 0.61

}}{{Election box total no change

|votes = 582,350

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Minnesota Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Jim Newberger

|votes = 201,531

|percentage = 69.50

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Merrill Anderson

|votes = 45,492

|percentage = 15.69

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Rae Hart Anderon

|votes = 25,883

|percentage = 8.93

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Rocky De La Fuente

|votes = 17,051

|percentage = 5.88

}}{{Election box total no change

|votes = 289,957

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Minnesota general election}}

{{Election box winning candidate with party link

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Amy Klobuchar (incumbent)

|votes = 1,566,174

|percentage = 60.31%

|change = –4.92

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Jim Newberger

|votes = 940,437

|percentage = 36.21%

|change = +5.68

}}{{Election box candidate with party link

|party = Legal Marijuana Now Party

|candidate = Dennis Schuller

|votes = 66,236

|percentage = 2.55%

|change = N/A

}}{{Election box candidate with party link

|party = Green Party (US)

|candidate = Paula M. Overby

|votes = 23,101

|percentage = 0.89%

|change = N/A

}}{{Election box write-in with party link

|votes = 931

|percentage = 0.04%

|change = –0.05

}}{{Election box total

|votes = 2,596,879

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Minnesota Democratic–Farmer–Labor Party

}}{{Election box end}}

{{Clear}}

= Minnesota (special) =

{{Infobox election

| election_name = Minnesota special election

| country = Minnesota

| flag_year = 1983

| type = presidential

| ongoing = no

| previous_election = 2014 United States Senate election in Minnesota

| previous_year = 2014

| next_election = 2020 United States Senate election in Minnesota

| next_year = 2020

| election_date =

| image_size = x136px

| turnout = 63.66%

| nominee1 = Tina Smith

| image1 = Tina Smith official photo (cropped).jpg

| party1 = Minnesota Democratic–Farmer–Labor Party

| popular_vote1 = 1,370,540

| percentage1 = 52.97%

| nominee2 = Karin Housley

| image2 = Minnesota State Senator Karin Housley.jpg

| party2 = Republican Party (US)

| popular_vote2 = 1,095,777

| percentage2 = 42.35%

| map_image = 2018 United States Senate special election in Minnesota results map by county.svg

| map_size = 250px

| map_caption = Smith: {{legend0|#A5B0FF|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}
Housley: {{legend0|#FFB2B2|40–50%}} {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}}

| title = U.S. senator

| before_election = Tina Smith

| before_party = Minnesota Democratic–Farmer–Labor Party

| after_election = Tina Smith

| after_party = Minnesota Democratic–Farmer–Labor Party

}}

{{Main|2018 United States Senate special election in Minnesota}}

{{See also|List of United States senators from Minnesota|2018 United States Senate election in Minnesota}}

Two-term Democrat Al Franken announced that he would resign in December 2017, following allegations of sexual harassment. Mark Dayton, Governor of Minnesota, appointed Lt. Gov. Tina Smith on January 2, 2018, as an interim Senator until the November 2018 election. She defeated primary challenger Richard Painter in the Democratic primary held on August 14.

Incumbent Tina Smith defeated Republican Karin Housley in the general election to finish the term ending January 3, 2021.

{{Election box begin no change |title=Minnesota Democratic (DFL) primary}}

{{Election box winning candidate with party link no change

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Tina Smith (incumbent)

|votes = 433,705

|percentage = 76.06

}}{{Election box candidate with party link no change

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Richard Painter

|votes = 78,193

|percentage = 13.71

}}{{Election box candidate with party link no change

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Ali Chehem Ali

|votes = 18,897

|percentage = 3.31

}}{{Election box candidate with party link no change

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Gregg A. Iverson

|votes = 17,825

|percentage = 3.13

}}{{Election box candidate with party link no change

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Nick Leonard

|votes = 16,529

|percentage = 2.90

}}{{Election box candidate with party link no change

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Christopher Lovell Seymore Sr.

|votes = 5,041

|percentage = 0.88

}}{{Election box total no change

|votes = 570,190

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Minnesota Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Karin Housley

|votes = 186,384

|percentage = 61.95

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Bob Anderson

|votes = 107,102

|percentage = 35.60

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Nikolay Nikolayevich Bey

|votes = 7,375

|percentage = 2.45

}}{{Election box total no change

|votes = 300,861

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Minnesota special election}}

{{Election box winning candidate with party link

|party = Minnesota Democratic–Farmer–Labor Party

|candidate = Tina Smith (incumbent)

|votes = 1,370,540

|percentage = 52.97%

|change = –0.18

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Karin Housley

|votes = 1,095,777

|percentage = 42.35%

|change = –0.56

}}{{Election box candidate with party link

|party = Legal Marijuana Now Party

|candidate = Sarah Wellington

|votes = 95,614

|percentage = 3.70%

|change = N/A

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Jerry Trooien

|votes = 24,324

|percentage = 0.94%

|change = N/A

}}{{Election box write-in with party link

|votes = 1,101

|percentage = 0.04%

|change = ±0.00

}}{{Election box total

|votes = 2,587,356

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Minnesota Democratic–Farmer–Labor Party

}}{{Election box end}}

{{Clear}}

Mississippi

= Mississippi (regular) =

{{Infobox election

| election_name = Mississippi general election

| country = Mississippi

| flag_image = Flag of Mississippi (2001–2020).svg

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Mississippi

| previous_year = 2012

| next_election = 2024 United States Senate election in Mississippi

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 49.66%

| nominee1 = Roger Wicker

| image1 = Roger F. Wicker crop.jpg

| party1 = Republican Party (US)

| popular_vote1 = 547,619

| percentage1 = 58.49%

| nominee2 = David Baria

| image2 = David Baria (cropped).jpg

| party2 = Democratic Party (US)

| popular_vote2 = 369,567

| percentage2 = 39.47%

| map_image = 2018 United States Senate election in Mississippi results map by county.svg

| map_size = 250px

| map_caption = Wicker: {{legend0|#ffb2b2|40-50%}} {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}} {{legend0|#c21b18|80–90%}}
Baria: {{legend0|#a5b0ff|40-50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}

| title = U.S. senator

| before_election = Roger Wicker

| before_party = Republican Party (US)

| after_election = Roger Wicker

| after_party = Republican Party (US)

}}

{{Main|2018 United States Senate election in Mississippi}}

{{See also|List of United States senators from Mississippi|2018 United States Senate special election in Mississippi}}

One-term Republican Roger Wicker won re-election with 57% of the vote in 2012. He was appointed in 2007 and won a special election in 2008 to serve the remainder of Trent Lott's term.{{Cite web | url=http://www.sos.ms.gov/Elections-Voting/Documents/QualifyingForms/2018%20Candidate%20Qualifying.pdf | title=2018 Mississippi Candidate Qualifying List | work=Mississippi Secretary of State | access-date=March 24, 2018 | archive-date=November 25, 2020 | archive-url=https://web.archive.org/web/20201125230404/https://www.sos.ms.gov/Elections-Voting/Documents/QualifyingForms/2018%20Candidate%20Qualifying.pdf | url-status=dead }}

David Baria won the Democratic nomination in a run-off on June 26.

Wicker was easily re-elected.{{Cite news | url=https://www.politico.com/election-results/2018/mississippi | title=Mississippi Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Mississippi Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Roger Wicker (incumbent)

|votes = 130,118

|percentage = 82.79

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Richard Boyanton

|votes = 27,052

|percentage = 17.21

}}{{Election box total no change

|votes = 157,170

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Mississippi Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Howard Sherman

|votes = 27,957

|percentage = 31.79

}}{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = David Baria

|votes = 27,244

|percentage = 30.98

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Omeria Scott

|votes = 21,278

|percentage = 24.20

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Victor G. Maurice Jr.

|votes = 4,361

|percentage = 4.96

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Jerome Garland

|votes = 4,266

|percentage = 4.85

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Jensen Bohren

|votes = 2,825

|percentage = 3.21

}}{{Election box total no change

|votes = 87,931

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Mississippi Democratic primary runoff}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = David Baria

|votes = 44,156

|percentage = 58.64

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Howard Sherman

|votes = 31,149

|percentage = 41.36

}}{{Election box total no change

|votes = 75,305

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Mississippi general election}}

{{Election box winning candidate with party link

|party = Republican Party (US)

|candidate = Roger Wicker (incumbent)

|votes = 547,619

|percentage = 58.49%

|change = +1.33

}}{{Election box candidate with party link

|party = Democratic Party (US)

|candidate = David Baria

|votes = 369,567

|percentage = 39.47%

|change = –1.08

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Danny Bedwell

|votes = 12,981

|percentage = 1.39%

|change = N/A

}}{{Election box candidate with party link

|party = Reform Party (US)

|candidate = Shawn O'Hara

|votes = 6,048

|percentage = 0.65%

|change = –0.58

}}{{Election box total

|votes = 936,215

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Republican Party (US)

}}{{Election box end}}

{{Clear}}

= Mississippi (special) =

{{Infobox election

| election_name = 2018 United States Senate special election in Mississippi

| country = Mississippi

| flag_image = Flag of Mississippi (2001–2020).svg

| type = presidential

| ongoing = no

| previous_election = 2014 United States Senate election in Mississippi

| previous_year = 2014

| next_election = 2020 United States Senate election in Mississippi

| next_year = 2020

| election_date = November 6, 2018 (first round)
November 27, 2018 (runoff)

| turnout = 48.14%

| image_size = 160x180px

| 1blank = First round

| 2blank = Runoff

| image1 = x150px

| candidate1 = Cindy Hyde-Smith

| party1 = Republican Party (United States)

| 1data1 = 389,995
41.2%

| 2data1 = 486,769
53.6%

| image2 = x150px

| candidate2 = Mike Espy

| party2 = Democratic Party (United States)

| 1data2 = 386,742
40.9%

| 2data2 = 420,819
46.4%

| image3 = x150px

| candidate3 = Chris McDaniel

| party3 = Republican Party (United States)

| 1data3 = 154,878
16.4%

| 2data3 = Eliminated

| map_image = {{switcher|250px|First round county results|250px|Runoff county results|default=2}}

| map_size = 200px

| map_caption = County results
Hyde-Smith: {{legend0|#FFC8CD|30–40%}} {{legend0|#FFB2B2|40–50%}} {{legend0|#E27F7F|50–60%}} {{legend0|#D75D5D|60–70%}} {{legend0|#d72f30|70–80%}} {{legend0|#c21b18|80–90%}}
Espy: {{legend0|#BDD3FF|30–40%}} {{legend0|#A5B0FF|40–50%}} {{legend0|#7996E2|50–60%}} {{legend0|#6674DE|60–70%}} {{legend0|#584CDE|70–80%}} {{legend0|#3933E5|80–90%}}
McDaniel: {{legend0|#ffcca9|30–40%}} {{legend0|#ffb580|40–50%}}

| title = U.S. Senator

| before_election = Cindy Hyde-Smith

| before_party = Republican Party (United States)

| after_election = Cindy Hyde-Smith

| after_party = Republican Party (United States)

}}{{Main|2018 United States Senate special election in Mississippi}}

{{See also|List of United States senators from Mississippi|2018 United States Senate election in Mississippi}}

Seven-term Republican Thad Cochran, who won re-election with 59.9% of the vote in 2014, announced that he would resign since April 1, 2018 for health reasons.{{Cite web | url=https://www.theguardian.com/us-news/2018/mar/05/mississippi-senator-thad-cochran-announces-he-is-stepping-down | title=Mississippi Senator Thad Cochran announces he is stepping down | last=Jacobs | first=Ben | date=March 5, 2018 | website=The Guardian | access-date=March 5, 2018}} Phil Bryant, Governor of Mississippi, announced on March 21, 2018, that he would appoint Mississippi Agriculture Commissioner Cindy Hyde-Smith to fill the vacancy.{{Cite news | url=https://www.washingtonpost.com/news/politics/wp/2018/03/21/miss-governor-names-cindy-hyde-smith-to-replace-gop-sen-thad-cochran-she-will-be-first-female-u-s-senator-from-state | title=Miss. governor names Cindy Hyde-Smith to replace GOP Sen. Thad Cochran. She will be first female U.S. senator from state | author=The Washington Post | access-date=March 21, 2018}} She ran in the special election.

On November 6, a nonpartisan jungle primary took place on the same day as the regularly scheduled U.S. Senate election for the seat currently held by Roger Wicker. Party affiliations were not printed on the ballot.{{Cite news | url=https://fivethirtyeight.com/features/how-things-could-go-wrong-for-republicans-in-mississippis-new-senate-race | archive-url=https://web.archive.org/web/20180306040233/https://fivethirtyeight.com/features/how-things-could-go-wrong-for-republicans-in-mississippis-new-senate-race/ | url-status=dead | archive-date=March 6, 2018 | title=How Things Could Go Wrong For Republicans In Mississippi's New Senate Race | last=Rakich | first=Nathaniel | date=March 6, 2018 | work=FiveThirtyEight | access-date=April 28, 2018 }} As no candidate gained 50% of the votes, a runoff special election between the top two candidates - Hyde-Smith and former United States Secretary of Agriculture Mike Espy - was held on November 27, 2018. Hyde-Smith won the runoff election.

Democrat Tobey Bartee{{Cite web | url=https://www.seattletimes.com/nation-world/5-candidates-now-in-special-us-senate-race-in-mississippi | title=5 candidates now in special US Senate race in Mississippi | last=Wagster Pettus | first=Emily | date=April 23, 2018 | website=The Seattle Times | access-date=June 30, 2018}} and Republican Chris McDaniel also contested the first round of the election.

{{Election box begin no change |title=Mississippi special election}}

{{Election box winning candidate with party link no change

|party = Nonpartisan politician

|candidate = Cindy Hyde-Smith (incumbent)

|votes = 389,995

|percentage = 41.25

}}{{Election box winning candidate with party link no change

|party = Nonpartisan politician

|candidate = Mike Espy

|votes = 386,742

|percentage = 40.90

}}{{Election box candidate with party link no change

|party = Nonpartisan politician

|candidate = Chris McDaniel

|votes = 154,878

|percentage = 16.38

}}{{Election box candidate with party link no change

|party = Nonpartisan politician

|candidate = Tobey Bernard Bartee

|votes = 13,852

|percentage = 1.47

}}{{Election box total no change

|votes = 945,467

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Mississippi special election runoff}}

{{Election box winning candidate with party link

|party = Nonpartisan politician

|candidate = Cindy Hyde-Smith (incumbent)

|votes = 486,769

|percentage = 53.63%

|change = –6.27

}}{{Election box candidate with party link

|party = Nonpartisan politician

|candidate = Mike Espy

|votes = 420,819

|percentage = 46.37%

|change = +8.48

}}{{Election box total

|votes = 907,588

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Republican Party (US)

}}{{Election box end}}

{{Clear}}

Missouri

{{Infobox election

| election_name = Missouri election

| country = Missouri

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Missouri

| previous_year = 2012

| next_election = 2024 United States Senate election in Missouri

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 58.23%

| nominee2 = Claire McCaskill

| image2 = Claire McCaskill, 113th official photo (cropped 2).jpg

| party2 = Democratic Party (US)

| popular_vote2 = 1,112,935

| percentage2 = 45.57%

| nominee1 = Josh Hawley

| image1 = Josh Hawley, official portrait, 116th congress.jpg

| party1 = Republican Party (US)

| popular_vote1 = 1,254,927

| percentage1 = 51.38%

| map_image = 2018 United States Senate election in Missouri results map by county.svg

| map_size = 255px

| map_caption = Hawley: {{legend0|#ffb2b2|40–50%}}

{{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}} {{legend0|#c21b18|80–90%}}
McCaskill: {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#3933E5 |80–90%}}

| title = U.S. senator

| before_election = Claire McCaskill

| before_party = Democratic Party (US)

| after_election = Josh Hawley

| after_party = Republican Party (US)

}}

{{Main|2018 United States Senate election in Missouri}}

{{See also|List of United States senators from Missouri}}

Two-term Democrat Claire McCaskill was re-elected with 55% of the vote in 2012. She was renominated.{{Cite web | url=https://s1.sos.mo.gov/candidatesonweb/DisplayCandidatesPlacement.aspx?OfficeCode=SW??&ElectionCode=750004332 | title=Missouri Candidates Lists | website=Missouri Secretary of State | access-date=March 17, 2018}}

Attorney General Josh Hawley won the Republican nomination.{{cite web|title=2018 Missouri primary election results|url=https://enrarchives.sos.mo.gov/enrnet/default.aspx?eid=750004535|access-date=2 July 2023}} Japheth Campbell declared his candidacy for the Libertarian nomination.

Polls showed a close race for months leading up to the election. Hawley defeated McCaskill in the general election.{{Cite news | url=https://www.politico.com/election-results/2018/missouri | title=Missouri Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Missouri Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Claire McCaskill (incumbent)

|votes = 501,872

|percentage = 82.60

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Carla Wright

|votes = 41,126

|percentage = 6.77

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = David Faust

|votes = 15,984

|percentage = 2.63

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = John Hogan

|votes = 15,958

|percentage = 2.63

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Angelica Earl

|votes = 15,500

|percentage = 2.55

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Travis Gonzalez

|votes = 9,480

|percentage = 1.56

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Leonard Joseph Steinman II

|votes = 7,657

|percentage = 1.26

}}{{Election box total no change

|votes = 607,577

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Missouri Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Josh Hawley

|votes = 389,978

|percentage = 58.64

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Tony Monetti

|votes = 64,834

|percentage = 9.75

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Austin Petersen

|votes = 54,916

|percentage = 8.26

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Kristi Nichols

|votes = 49,640

|percentage = 7.47

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Christina Smith

|votes = 35,024

|percentage = 5.27

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Ken Patterson

|votes = 19,579

|percentage = 2.94

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Peter Pfeifer

|votes = 16,594

|percentage = 2.50

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Courtland Sykes

|votes = 13,870

|percentage = 2.09

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Fred Ryman

|votes = 8,781

|percentage = 1.32

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Brian G. Hagg

|votes = 6,871

|percentage = 1.03

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Bradley Krembs

|votes = 4,902

|percentage = 0.74

}}{{Election box total no change

|votes = 664,889

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Missouri general election}}

{{Election box winning candidate with party link

|party = Republican Party (US)

|candidate = Josh Hawley

|votes = 1,254,927

|percentage = 51.38%

|change = +12.27

}}{{Election box candidate with party link

|party = Democratic Party (US)

|candidate = Claire McCaskill (incumbent)

|votes = 1,112,935

|percentage = 45.57%

|change = –9.24

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Craig O'Dear

|votes = 34,398

|percentage = 1.41%

|change = N/A

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Japheth Campbell

|votes = 27,316

|percentage = 1.12%

|change = –4.95

}}{{Election box candidate with party link

|party = Green Party (US)

|candidate = Jo Crain

|votes = 12,706

|percentage = 0.52%

|change = N/A

}}{{Election box write-in with party link

|votes = 7

|percentage = 0.00%

|change = –0.01

}}{{Election box total

|votes = 2,442,289

|percentage = 100.00%

}}{{Election box gain with party link no swing

|winner = Republican Party (US)

|loser = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Montana

{{Infobox election

| election_name = Montana election

| country = Montana

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Montana

| previous_year = 2012

| next_election = 2024 United States Senate election in Montana

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 70.86%

| nominee1 = Jon Tester

| image1 = JonTester (cropped).jpg

| party1 = Democratic Party (US)

| popular_vote1 = 253,876

| percentage1 = 50.33%

| nominee2 = Matt Rosendale

| image2 = Matt Rosendale 117th U.S Congress.jpg

| party2 = Republican Party (US)

| popular_vote2 = 235,963

| percentage2 = 46.78%

| map_image = 2018 United States Senate election in Montana results map by county.svg

| map_size = 250px

| map_caption = Tester: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}
Rosendale: {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}} {{legend0|#c21b18|80–90%}}

| title = U.S. senator

| before_election = Jon Tester

| before_party = Democratic Party (US)

| after_election = Jon Tester

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Montana}}

{{See also|List of United States senators from Montana}}

Two-term Democrat Jon Tester was re-elected with 49% of the vote in 2012. He won the Democratic nomination in the June 5 primary with no opposition.{{Cite web | url=https://app.mt.gov/cgi-bin/filing/index.cgi?ACTION=LIST_NON_LEG | work=Montana Secretary of state | title=Montana Primary Candidates Lists | access-date=March 12, 2018 | archive-url=https://web.archive.org/web/20180309001734/https://app.mt.gov/cgi-bin/filing/index.cgi?ACTION=LIST_NON_LEG | archive-date=March 9, 2018 | url-status=dead | df=mdy-all }}

State Auditor Matthew Rosendale won the Republican nomination in the June 5 primary. State Senator Albert Olszewski, former judge Russell Fagg, and Troy Downing also ran for the Republican nomination.

Tester was re-elected winning over 50% of the vote.{{Cite news | url=https://www.vox.com/2018/11/7/18049646/senate-midterm-results-montana-jon-tester-winner | title=Jon Tester re-elected to US Senate, holding on to Montana seat for Democrats | work=Vox | access-date=December 2, 2018}}

{{Election box begin no change |title=Montana Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Jon Tester (incumbent)

|votes = 114,948

|percentage = 100.00

}}{{Election box write-in with party link no change

|votes = 5

|percentage = 0.00

}}{{Election box total no change

|votes = 114,953

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Montana Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Matt Rosendale

|votes = 51,859

|percentage = 33.82

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Russell Fagg

|votes = 43,465

|percentage = 28.34

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Troy Downing

|votes = 29,341

|percentage = 19.13

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Albert Olszewski

|votes = 28,681

|percentage = 18.70

}}{{Election box write-in with party link no change

|votes = 9

|percentage = 0.01

}}{{Election box total no change

|votes = 153,355

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Montana general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Jon Tester (incumbent)

|votes = 253,876

|percentage = 50.33%

|change = +1.75

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Matt Rosendale

|votes = 235,963

|percentage = 46.78%

|change = +1.92

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Rick Breckenridge

|votes = 14,545

|percentage = 2.88%

|change = –3.68

}}{{Election box total

|votes = 504,384

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Nebraska

{{Infobox election

| election_name = Nebraska election

| country = Nebraska

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Nebraska

| previous_year = 2012

| next_election = 2024 United States Senate election in Nebraska

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 57.32%

| nominee1 = Deb Fischer

| image1 = Deb Fischer, official portrait, 115th Congress (cropped).jpg

| party1 = Republican Party (US)

| popular_vote1 = 403,151

| percentage1 = 57.69%

| nominee2 = Jane Raybould

| image2 = 3x4.svg

| party2 = Democratic Party (US)

| popular_vote2 = 269,917

| percentage2 = 38.62%

| map_image = 2018 United States Senate election in Nebraska results map by county.svg

| map_size = 300px

| map_caption = Fischer: {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#D72F30|70–80%}} {{legend0|#C21B18|80–90%}} {{legend0|#A80000|>90%}}
Raybould: {{legend0|#A5B0FF|40–50%}} {{legend0|#7996e2|50–60%}}

| title = U.S. senator

| before_election = Deb Fischer

| before_party = Republican Party (US)

| after_election = Deb Fischer

| after_party = Republican Party (US)

}}

{{Main|2018 United States Senate election in Nebraska}}

{{See also|List of United States senators from Nebraska}}

One-term Republican Deb Fischer was elected with 58% of the vote in 2012. She ran for and won the Republican nomination in the May 15 primary.{{Cite web | url=http://www.sos.ne.gov/elec/2018/pdf/forms/statewide-candidate-list.pdf | title=Statewide Candidate List | publisher=Nebraska Secretary of State | access-date=September 2, 2018}} Other Republicans who ran include retired professor Jack Heidel, Todd Watson, and Dennis Frank Macek.{{Cite web | url=http://www.sos.ne.gov/elec/2018/pdf/forms/statewide-candidate-list.pdf | title=Official Nebraska Candidate Lists | publisher=Nebraska Secretary of State | date=March 1, 2018 | access-date=March 2, 2018}}

Lincoln City Councilwoman Jane Raybould ran for and won the Democratic nomination in the May 15 primary. Other Democrats who ran include Frank Svoboda, Chris Janicek, and Larry Marvin, who was a candidate in 2008, 2012, and 2014.

Jim Schultz ran for the Libertarian nomination.

Fischer was easily re-elected.{{Cite news | url=https://www.politico.com/election-results/2018/nebraska | title=Nebraska Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Nebraska Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Deb Fischer (incumbent)

|votes = 128,157

|percentage = 75.79

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Todd F. Watson

|votes = 19,661

|percentage = 11.63

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Jack Heidel

|votes = 9,413

|percentage = 5.57

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Jeffrey Lynn Stein

|votes = 6,380

|percentage = 3.77

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Dennis Frank Macek

|votes = 5,483

|percentage = 3.24

}}{{Election box total no change

|votes = 169,094

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Nebraska Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Jane Raybould

|votes = 59,067

|percentage = 63.68

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Chris Janicek

|votes = 18,752

|percentage = 20.22

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Frank B. Svoboda

|votes = 10,548

|percentage = 11.37

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Larry Marvin

|votes = 4,393

|percentage = 4.74

}}{{Election box total no change

|votes = 92,760

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Nebraska general election}}

{{Election box winning candidate with party link

|party = Republican Party (US)

|candidate = Deb Fischer (incumbent)

|votes = 403,151

|percentage = 57.69%

|change = –0.08

}}{{Election box candidate with party link

|party = Democratic Party (US)

|candidate = Jane Raybould

|votes = 269,917

|percentage = 38.62%

|change = –3.61

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Jim Schultz

|votes = 25,349

|percentage = 3.63%

|change = N/A

}}{{Election box write-in with party link

|votes = 466

|percentage = 0.07%

|change = N/A

}}{{Election box total

|votes = 698,883

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Republican Party (US)

}}{{Election box end}}

{{Clear}}

Nevada

{{Infobox election

| election_name = Nevada election

| country = Nevada

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Nevada

| previous_year = 2012

| next_election = 2024 United States Senate election in Nevada

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 62.26%

| nominee2 = Dean Heller

| image2 = Dean Heller, official portrait, 114th Congress (cropped).jpg

| party2 = Republican Party (US)

| popular_vote2 = 441,202

| percentage2 = 45.38%

| nominee1 = Jacky Rosen

| image1 = Jacky Rosen, official portrait, 116th congress (cropped-1).jpg

| party1 = Democratic Party (US)

| popular_vote1 = 490,071

| percentage1 = 50.41%

| map_image = 2018 United States Senate election in Nevada results map by county.svg

| map_size = 200px

| map_caption = Rosen: {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}}
Heller: {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}
{{legend0|#c21b18|80–90%}}

| title = U.S. senator

| before_election = Dean Heller

| before_party = Republican Party (US)

| after_election = Jacky Rosen

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Nevada}}

{{See also|List of United States senators from Nevada}}

Incumbent Republican Dean Heller was the Republican nominee. He was appointed to the seat in 2011 and then elected with 46% of the vote in 2012. Heller considered running for governor, but chose to seek re-election.{{Cite web | url=http://nvsos.gov/sos/elections/2018-election/2018-filed-candidates-non-judicial | title=Nevada Candidates Lists | work=Nevada Secretary of state}}

Nevada was the only state in the mid-term elections that had an incumbent Republican senator in a state that Hillary Clinton had won in 2016.

Representative Jacky Rosen is the Democratic nominee.{{Cite news | url=https://ballotpedia.org/United_States_Senate_election_in_Nevada,_2018 | title= 2018 United States Senate election in Nevada}}

Rosen defeated Heller in the general election, making Heller the only Republican incumbent to lose re-election in 2018.{{Cite news | url=https://www.politico.com/story/2018/11/07/jacky-rosen-vs-dean-heller-nevada-senate-race-results-2018-963523 | title=Jacky Rosen unseats Dean Heller in Nevada Senate race | work=POLITICO | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Nevada Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Dean Heller (incumbent)

|votes = 99,509

|percentage = 69.97

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Tom Heck

|votes = 26,296

|percentage = 18.49

}}{{Election box None of These Candidates with party link no change

|votes = 5,978

|percentage = 4.20

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Sherry Brooks

|votes = 5,145

|percentage = 3.62

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Sarah Gazala

|votes = 4,011

|percentage = 2.82

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Vic Harrell

|votes = 1,282

|percentage = 0.90

}}{{Election box total no change

|votes = 142,221

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Nevada Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Jacky Rosen

|votes = 110,567

|percentage = 77.11

}}{{Election box None of These Candidates with party link no change

|votes = 10,078

|percentage = 7.03

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = David Drew Knight

|votes = 6,346

|percentage = 4.43

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Allen Rheinhart

|votes = 4,782

|percentage = 3.33

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Jesse Sbaih

|votes = 4,540

|percentage = 3.17

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Sujeet Mahendra

|votes = 3,835

|percentage = 2.67

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Danny Burleigh

|votes = 3,244

|percentage = 2.26

}}{{Election box total no change

|votes = 143,392

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Nevada general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Jacky Rosen

|votes = 490,071

|percentage = 50.41%

|change = +5.70

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Dean Heller (incumbent)

|votes = 441,202

|percentage = 45.38%

|change = –0.49

}}{{Election box None of These Candidates with party link

|votes = 15,303

|percentage = 1.57%

|change = –2.97

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Barry Michaels

|votes = 9,269

|percentage = 0.95%

|change = N/A

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Tim Hagan

|votes = 9,196

|percentage = 0.95%

|change = N/A

}}{{Election box candidate with party link

|party = Independent American Party of Nevada

|candidate = Kamau A. Bakari

|votes = 7,091

|percentage = 0.73%

|change = –4.16

}}{{Election box total

|votes = 972,132

|percentage = 100.00%

}}{{Election box gain with party link no swing

|winner = Democratic Party (US)

|loser = Republican Party (US)

}}{{Election box end}}

{{Clear}}

New Jersey

{{Infobox election

| election_name = New Jersey election

| country = New Jersey

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in New Jersey

| previous_year = 2012

| next_election = 2024 United States Senate election in New Jersey

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 53.38%

| nominee1 = Bob Menendez

| image1 = Robert Menendez official Senate portrait.jpg

| party1 = Democratic Party (US)

| popular_vote1 = 1,711,654

| percentage1 = 54.01%

| nominee2 = Bob Hugin

| image2 = Bob Hugin.jpg

| party2 = Republican Party (US)

| popular_vote2 = 1,357,355

| percentage2 = 42.83%

| map_image = {{switcher

|280px

|County results

|280px

|Municipality results}}

| map_caption = Menendez: {{legend0|#A5B0FF|40–50%}} {{legend0|#7996E2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933E5|80–90%}} {{legend0|#0D0596|>90%}}

Hugin: {{legend0|#FFB2B2|40–50%}} {{legend0|#E27F7F|50–60%}} {{legend0|#D75D5D|60–70%}} {{legend0|#D72F30|70–80%}}

| title = U.S. senator

| before_election = Bob Menendez

| before_party = Democratic Party (US)

| after_election = Bob Menendez

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in New Jersey}}

{{See also|List of United States senators from New Jersey}}

Republican Bob Hugin was nominated to face two-term Democrat Bob Menendez, who was re-elected with 59% of the vote in 2012. Menendez was originally appointed to the seat in January 2006. He ran for re-election, despite recent scandals that plagued his campaign.{{Cite web | url=https://nj.gov/state/elections/assets/pdf/election-results/2018/2018-official-general-candidates-us-senate.pdf | title=Candidates for US Senate for GENERAL ELECTION | publisher=New Jersey Election | access-date=September 2, 2018}}

Hugin self-funded most of his campaign. Ultimately, Menendez was re-elected with nearly 54% of the vote.{{Cite news | url=https://www.politico.com/election-results/2018/new-jersey | title=New Jersey Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=New Jersey Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Bob Menendez (incumbent)

|votes = 262,477

|percentage = 62.28

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Lisa A. McCormick

|votes = 158,998

|percentage = 37.72

}}{{Election box total no change

|votes = 421,475

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=New Jersey Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Bob Hugin

|votes = 168,052

|percentage = 75.13

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Brian D. Goldberg

|votes = 55,624

|percentage = 24.87

}}{{Election box total no change

|votes = 223,676

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=New Jersey general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Bob Menendez (incumbent)

|votes = 1,711,654

|percentage = 54.01%

|change = –4.86

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Bob Hugin

|votes = 1,357,355

|percentage = 42.83%

|change = +3.46

}}{{Election box candidate with party link

|party = Green Party (US)

|candidate = Madelyn R. Hoffman

|votes = 25,150

|percentage = 0.79%

|change = +0.32

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Murray Sabrin

|votes = 21,212

|percentage = 0.67%

|change = +0.17

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Natalie Lynn Rivera

|votes = 19,897

|percentage = 0.63%

|change = N/A

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Tricia Flanagan

|votes = 16,101

|percentage = 0.51%

|change = N/A

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Kevin Kimple

|votes = 9,087

|percentage = 0.29%

|change = N/A

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Hank Schroeder

|votes = 8,854

|percentage = 0.28%

|change = N/A

}}{{Election box total

|votes = 3,169,310

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

New Mexico

{{Infobox election

| election_name = New Mexico election

| country = New Mexico

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in New Mexico

| previous_year = 2012

| next_election = 2024 United States Senate election in New Mexico

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 55.03%

| image1 = Heinrich Official Headshot 2019 (cropped).jpg

| nominee1 = Martin Heinrich

| party1 = Democratic Party (US)

| popular_vote1 = 376,998

| percentage1 = 54.09%

| image3 = Gary Johnson campaign portrait.jpg

| nominee3 = Gary Johnson

| party3 = Libertarian Party (US)

| popular_vote3 = 107,201

| percentage3 = 15.38%

| image2 = Mick Rich, NM GOP Senate candidate (43627127715) (cropped).jpg

| nominee2 = Mick Rich

| party2 = Republican Party (US)

| popular_vote2 = 212,813

| percentage2 = 30.53%

| map_image = 2018 United States Senate election in New Mexico results map by county.svg

| map_size = 200px

| map_caption = Heinrich: {{legend0|#A5B0FF|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}
Rich: {{legend0|#FFB2B2|40–50%}} {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}}

| title = U.S. senator

| before_election = Martin Heinrich

| before_party = Democratic Party (US)

| after_election = Martin Heinrich

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in New Mexico}}

{{See also|List of United States senators from New Mexico}}

One-term Democrat Martin Heinrich was elected with 51% of the vote in 2012. He ran unopposed.{{Cite news | url=http://krwg.org/post/full-list-new-mexico-major-party-candidates | title=New Mexico Major Parties Candidates | publisher=KRWG | access-date=March 26, 2018}} Mick Rich won the Republican nomination unopposed.

Aubrey Dunn Jr., New Mexico Commissioner of Public Lands and otherwise the first Libertarian to ever hold statewide elected office in history, announced his run for the seat, but withdrew on July 30, and former Governor of New Mexico Gary Johnson served as Dunn's replacement nominee.

Heinrich was easily re-elected, defeating Rich and Johnson.

{{Election box begin no change |title=New Mexico Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Martin Heinrich (incumbent)

|votes = 152,145

|percentage = 100.00

}}{{Election box total no change

|votes = 152,145

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=New Mexico Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Mick Rich

|votes = 67,502

|percentage = 100.00

}}{{Election box total no change

|votes = 67,502

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=New Mexico Libertarian primary}}

{{Election box winning candidate with party link no change

|party = Libertarian Party (US)

|candidate = Aubrey Dunn Jr.

|votes = 623

|percentage = 100.00

}}{{Election box total no change

|votes = 623

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=New Mexico general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Martin Heinrich (incumbent)

|votes = 376,998

|percentage = 54.09%

|change = +3.08

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Mick Rich

|votes = 212,813

|percentage = 30.53%

|change = –14.75

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Gary Johnson

|votes = 107,201

|percentage = 15.38%

|change = N/A

}}{{Election box total

|votes = 697,012

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

New York

{{Infobox election

| election_name = New York election

| country = New York

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in New York

| previous_year = 2012

| next_election = 2024 United States Senate election in New York

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 52.32%

| nominee1 = Kirsten Gillibrand

| image1 = Kirsten Gillibrand, official photo, 116th Congress (cropped).jpg

| party1 = Democratic Party (US)

| popular_vote1 = 4,056,931

| percentage1 = 67.00%

| nominee2 = Chele Chiavacci Farley

| image2 = Chele Farley 1 (cropped).jpg

| party2 = Republican Party (US)

| popular_vote2 = 1,998,220

| percentage2 = 33.00%

| map_image = 2018 United States Senate election in New York results map by county.svg

| map_size = 300px

| map_caption = County results
Gillibrand: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}} {{legend0|#0D0596|>90%}}
Farley: {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}}

| title = U.S. senator

| before_election = Kirsten Gillibrand

| before_party = Democratic Party (US)

| after_election = Kirsten Gillibrand

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in New York}}

{{See also|List of United States senators from New York}}

One-term Democrat Kirsten Gillibrand was elected with 72% of the vote in 2012. She had previously been appointed to the seat in 2009 and won a special election to remain in office in 2010. She ran.{{Cite web | url=http://www.elections.ny.gov:8080/reports/rwservlet?cmdkey=whofiled_primary | title=Who Filed Report | work=New York State Board of Election | access-date=April 10, 2018 | archive-date=May 4, 2016 | archive-url=https://web.archive.org/web/20160504084538/http://www.elections.ny.gov:8080/reports/rwservlet?cmdkey=whofiled_primary | url-status=dead }}

Private equity executive Chele Chiavacci Farley has been nominated for U.S. Senate by the Republican and Conservative Parties.

Gillibrand was elected to a second term.{{Cite news | url=https://www.elections.ny.gov/NYSBOE/elections/2018/general/2018USSenate.pdf | title=Certified Results from the November 6, 2018 General Election for U.S. senator | access-date=December 17, 2018 | language=en | archive-date=March 8, 2021 | archive-url=https://web.archive.org/web/20210308134553/https://www.elections.ny.gov/NYSBOE/elections/2018/general/2018USSenate.pdf | url-status=dead }}

{{Election box begin |title=New York general election}}

{{Election box candidate with party link

|party = Democratic Party (US)

|candidate = Kirsten Gillibrand

|votes = 3,755,489

|percentage = 61.98%

|change = –4.40

}}{{Election box candidate with party link

|party = Working Families Party

|candidate = Kirsten Gillibrand

|votes = 160,128

|percentage = 2.64%

|change = –1.12

}}{{Election box candidate with party link

|party = Independence Party (New York)

|candidate = Kirsten Gillibrand

|votes = 99,325

|percentage = 1.64%

|change = –0.43

}}{{Election box candidate with party link

|party = Women's Equality Party (New York)

|candidate = Kirsten Gillibrand

|votes = 41,989

|percentage = 0.69%

|change = N/A

}}{{Election box winning candidate

|party = Total

|candidate = Kirsten Gillibrand (incumbent)

|votes = 4,056,931

|percentage = 66.96%

|change = –5.25

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Chele Farley

|votes = 1,730,439

|percentage = 28.56%

|change = +5.83

}}{{Election box candidate with party link

|party = Conservative Party (New York)

|candidate = Chele Farley

|votes = 246,171

|percentage = 4.06%

|change = +0.45

}}{{Election box candidate with party link

|party = Reform Party (US)

|candidate = Chele Farley

|votes = 21,610

|percentage = 0.36%

|change = N/A

}}{{Election box candidate

|party = Total

|candidate = Chele Farley

|votes = 1,998,220

|percentage = 32.98%

|change = +6.64

}}{{Election box write-in with party link

|votes = 3,872

|percentage = 0.06%

|change = N/A

}}{{Election box total

|votes = 6,059,023

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

North Dakota

{{Infobox election

| election_name = North Dakota election

| country = North Dakota

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in North Dakota

| previous_year = 2012

| next_election = 2024 United States Senate election in North Dakota

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 56.27%

| nominee2 = Heidi Heitkamp

| image2 = Heidi Heitkamp official portrait 113th Congress.jpg

| party2 = North Dakota Democratic-NPL Party

| popular_vote2 = 144,376

| percentage2 = 44.55%

| nominee1 = Kevin Cramer

| image1 = File:Kevin Cramer, official portrait, 116th congress (cropped).jpg

| party1 = Republican Party (US)

| popular_vote1 = 179,720

| percentage1 = 55.45%

| map_image = 2018 United States Senate election in North Dakota results map by county.svg

| map_size = 250px

| map_caption = Cramer: {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}} {{legend0|#c21b18|80–90%}}
Heitkamp: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#3933e5|80–90%}}

| title = U.S. senator

| before_election = Heidi Heitkamp

| before_party = North Dakota Democratic-NPL Party

| after_election = Kevin Cramer

| after_party = Republican Party (US)

}}

{{Main|2018 United States Senate election in North Dakota}}

{{See also|List of United States senators from North Dakota}}

One-term Democrat Heidi Heitkamp was elected with 50% of the vote in 2012. She won the Democratic nomination unopposed.{{Cite web | url=https://vip.sos.nd.gov/CandidateList.aspx?eid=302 | title=2018 Primary Contest Candidate List | work=North Dakota Secretary of State | access-date=April 9, 2018}}

Representative Kevin Cramer won the Republican nomination in the June 12 primary. Former Niagara, North Dakota Mayor Thomas O'Neill also ran for the Republican nomination.

Heitkamp was continuously behind in the polls leading up to the election, and Heitkamp ended up losing to Cramer by 11%.{{Cite news | url=https://www.politico.com/election-results/2018/north-dakota | title=North Dakota Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=North Dakota Democratic-NPL primary}}

{{Election box winning candidate with party link no change

|party = North Dakota Democratic-NPL Party

|candidate = Heidi Heitkamp (incumbent)

|votes = 36,729

|percentage = 99.58

}}{{Election box write-in with party link no change

|votes = 154

|percentage = 0.42

}}{{Election box total no change

|votes = 36,883

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=North Dakota Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Kevin Cramer

|votes = 61,529

|percentage = 87.73

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Thomas O'Neill

|votes = 8,509

|percentage = 12.13

}}{{Election box write-in with party link no change

|votes = 95

|percentage = 0.14

}}{{Election box total no change

|votes = 70,133

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=North Dakota general election}}

{{Election box winning candidate with party link

|party = Republican Party (US)

|candidate = Kevin Cramer

|votes = 179,720

|percentage = 55.11%

|change = +5.79

}}{{Election box candidate with party link

|party = North Dakota Democratic-NPL Party

|candidate = Heidi Heitkamp (incumbent)

|votes = 144,376

|percentage = 44.27%

|change = –5.97

}}{{Election box write-in with party link

|votes = 2,042

|percentage = 0.63%

|change = +0.19

}}{{Election box total

|votes = 326,138

|percentage = 100.00%

}}{{Election box gain with party link no swing

|winner = Republican Party (US)

|loser = North Dakota Democratic-NPL Party

}}{{Election box end}}

{{Clear}}

Ohio

{{Infobox election

| election_name = Ohio election

| country = Ohio

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Ohio

| previous_year = 2012

| next_election = 2024 United States Senate election in Ohio

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 54.65%

| nominee1 = Sherrod Brown

| image1 = File:Sherrod Brown 117th Congress (2) (cropped).jpg

| party1 = Democratic Party (US)

| popular_vote1 = 2,355,924

| percentage1 = 53.41%

| nominee2 = Jim Renacci

| image2 = Jim Renacci, Official Portrait, 112th Congress (cropped 3).jpg

| party2 = Republican Party (US)

| popular_vote2 = 2,053,963

| percentage2 = 46.59%

| map_image = 2018 United States Senate election in Ohio results map by county.svg

| map_size = 200px

| map_caption = Brown: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}}

Renacci: {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#D72F30|70–80%}}

| title = U.S. senator

| before_election = Sherrod Brown

| before_party = Democratic Party (US)

| after_election = Sherrod Brown

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Ohio}}

{{See also|List of United States senators from Ohio}}

Two-term Democrat Sherrod Brown was re-elected with 51% of the vote in 2012. He ran and was unopposed in Democratic primary.{{Cite web | url=https://www.sos.state.oh.us/media-center/press-releases/2018/2018-02-07 | title=Secretary of State Jon Husted Receives Statewide Candidate Petitions for May Primary | work=Ohio Secretary of State | access-date=March 23, 2018 | archive-url=https://web.archive.org/web/20180212083313/https://www.sos.state.oh.us/media-center/press-releases/2018/2018-02-07/ | archive-date=February 12, 2018 | url-status=dead }}

U.S. Representative Jim Renacci ran for and won the Republican nomination in the May 8 primary. Other Republicans who ran include investment banker Michael Gibbons, businesswoman Melissa Ackison, Dan Kiley, and Don Elijah Eckhart.

Brown won re-election, defeating Renacci. Brown was the only non-judicial statewide Democrat in Ohio to win in 2018.{{Cite news | url=https://www.cincinnati.com/story/news/politics/2018/11/13/sen-sherrod-brown-president-5-things-know/1981413002 | title=Can Sherrod Brown win the presidency in 2020? 5 things to know about the Ohio Democrat | work=Cincinnati.com | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Ohio Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Sherrod Brown (incumbent)

|votes = 613,373

|percentage = 100.00

}}{{Election box total no change

|votes = 613,373

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Ohio Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Jim Renacci

|votes = 363,622

|percentage = 47.34

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Mike Gibbons

|votes = 243,426

|percentage = 31.69

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Melissa Ackison

|votes = 100,543

|percentage = 13.09

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Dan Kiley

|votes = 30,684

|percentage = 3.99

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Don Elijah Eckhart

|votes = 29,796

|percentage = 3.88

}}{{Election box write-in with party link no change

|votes = 78

|percentage = 0.01

}}{{Election box total no change

|votes = 768,149

|percentage = 100.00

}}{{Election box end}}{{Election box begin|title=Ohio general election{{cite web|title=United States Senate general election in Ohio, 2018|url=https://www.sos.state.oh.us/globalassets/elections/2018/gen/2018-11-06_statewidecounty.xlsx|access-date=February 27, 2023|archive-date=June 6, 2019|archive-url=https://web.archive.org/web/20190606020902/https://www.sos.state.oh.us/globalassets/elections/2018/gen/2018-11-06_statewidecounty.xlsx|url-status=dead}}}}

{{Election box winning candidate with party link|party=Democratic Party (United States)|candidate=Sherrod Brown (incumbent)|votes=2,355,924|percentage=53.41%|change=+2.70%}}

{{Election box candidate with party link|party=Republican Party (United States)|candidate=Jim Renacci|votes=2,053,963|percentage=46.57%|change=+1.87%}}

{{Election box write-in with party link|votes=1,012|percentage=0.02%|change=N/A}}

{{Election box total|votes=4,410,898|percentage=100.00%|change=N/A}}

{{Election box hold with party link no swing|winner=Democratic Party (United States)}}

{{Election box end}}{{Clear}}

Pennsylvania

{{Infobox election

| election_name = Pennsylvania election

| country = Pennsylvania

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Pennsylvania

| previous_year = 2012

| next_election = 2024 United States Senate election in Pennsylvania

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 58.18%

| nominee1 = Bob Casey Jr.

| image1 = Bob Casey Jr. official photo.jpg

| party1 = Democratic Party (US)

| popular_vote1 = 2,792,327

| percentage1 = 55.74%

| nominee2 = Lou Barletta

| image2 = Lou Barletta (cropped 2).jpg

| party2 = Republican Party (US)

| popular_vote2 = 2,134,848

| percentage2 = 42.62%

| map_image = 2018 United States Senate election in Pennsylvania results map by county.svg

| map_size = 250px

| map_caption = Casey: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#3933e5|80–90%}}

Barletta: {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#D72F30|70–80%}}

| title = U.S. senator

| before_election = Bob Casey Jr.

| before_party = Democratic Party (US)

| after_election = Bob Casey Jr.

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Pennsylvania}}

{{See also|List of United States senators from Pennsylvania}}

Two-term Democrat Bob Casey Jr. was re-elected with 54% of the vote in 2012. He ran and won the Democratic primary unopposed.{{Cite web | title=Pennsylvania Candidates Lists | url=https://www.pavoterservices.pa.gov/electioninfo/ElectionInfo.aspx | work=Pennsylvania Secretary of State | access-date=March 20, 2018}}

U.S. Representative Lou Barletta ran for and won the Republican nomination in the May 15 primary. Jim Christiana also ran for the Republican nomination.

Casey was easily re-elected.{{Cite news | url=https://www.politico.com/election-results/2018/pennsylvania | title=Pennsylvania Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Pennsylvania Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Bob Casey Jr. (incumbent)

|votes = 752,008

|percentage = 99.13

}}{{Election box write-in with party link no change

|votes = 6,584

|percentage = 0.87

}}{{Election box total no change

|votes = 758,592

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Pennsylvania Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Lou Barletta

|votes = 433,312

|percentage = 62.80

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Jim Christiana

|votes = 254,118

|percentage = 36.83

}}{{Election box write-in with party link no change

|votes = 2,553

|percentage = 0.37

}}{{Election box total no change

|votes = 689,983

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Pennsylvania general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Bob Casey Jr. (incumbent)

|votes = 2,792,437

|percentage = 55.73%

|change = +2.04

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Lou Barletta

|votes = 2,134,848

|percentage = 42.60%

|change = –1.99

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Dale Kerns

|votes = 50,907

|percentage = 1.02%

|change = –0.70

}}{{Election box candidate with party link

|party = Green Party (US)

|candidate = Neal Gale

|votes = 31,208

|percentage = 0.62%

|change = N/A

}}{{Election box write-in with party link

|votes = 1,568

|percentage = 0.03%

|change = N/A

}}{{Election box total

|votes = 5,010,968

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Rhode Island

{{Infobox election

| election_name = Rhode Island election

| country = Rhode Island

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Rhode Island

| previous_year = 2012

| next_election = 2024 United States Senate election in Rhode Island

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 47.69%

| image1 = Sheldon Whitehouse, official portrait, 116th congress.jpg

| nominee1 = Sheldon Whitehouse

| party1 = Democratic Party (US)

| popular_vote1 = 231,477

| percentage1 = 61.44%

| image2 = File:Bob Flanders photo (cropped).jpg

| nominee2 = Robert Flanders

| party2 = Republican Party (US)

| popular_vote2 = 144,421

| percentage2 = 38.33%

| map_image = {{switcher

|230px

|County results

|File:2018 United States Senate election in Rhode Island results map by municipality.svg

|Municipality results

|default=1

}}

| map_size = 230px

| map_caption = Whitehouse: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}}
Flanders: {{legend0|#E27F7F|50–60%}}

| title = U.S. senator

| before_election = Sheldon Whitehouse

| before_party = Democratic Party (US)

| after_election = Sheldon Whitehouse

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Rhode Island}}

{{See also|List of United States senators from Rhode Island}}

Two-term Democrat Sheldon Whitehouse was re-elected with 64% of the vote in 2012. He ran.{{Cite web | url=http://sos.ri.gov/candidates | title=Candidates in Upcoming Elections | work=Rhode Island Department of State | access-date=June 28, 2018 | archive-date=November 25, 2020 | archive-url=https://web.archive.org/web/20201125230504/https://www.sos.ri.gov/candidates | url-status=dead }}

Former Rhode Island Supreme Court Associate Justice Robert Flanders was the Republican nominee.

Whitehouse was elected to a third term by a wide margin.

{{Election box begin no change |title=Rhode Island Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Sheldon Whitehouse (incumbent)

|votes = 89,140

|percentage = 76.79

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Patricia Fontes

|votes = 26,947

|percentage = 23.21

}}{{Election box total no change

|votes = 116,087

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Rhode Island Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Robert Flanders

|votes = 26,543

|percentage = 87.70

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Rocky De La Fuente

|votes = 3,722

|percentage = 12.30

}}{{Election box total no change

|votes = 30,265

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Rhode Island general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Sheldon Whitehouse (incumbent)

|votes = 231,477

|percentage = 61.44%

|change = –3.37

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Robert Flanders

|votes = 144,421

|percentage = 38.33%

|change = +3.36

}}{{Election box write-in with party link

|votes = 840

|percentage = 0.22%

|change = ±0.00

}}{{Election box total

|votes = 376,738

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Tennessee

{{Infobox election

| election_name = Tennessee election

| country = Tennessee

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Tennessee

| previous_year = 2012

| next_election = 2024 United States Senate election in Tennessee

| next_year = 2024

| election_date = November 6, 2018

| turnout = 54.46% {{decrease}}{{Cite news |date=November 6, 2018 |title=Tennessee Voter Turnout in 2018 |work=Tennessee Secretary of State |url=https://sos.tn.gov/elections/statistics |access-date=February 28, 2023 }} 7.4 pp

| image1 = File:Sen. Marsha Blackburn (R-TN) official headshot - 116th Congress (cropped).jpg

| nominee1 = Marsha Blackburn

| party1 = Republican Party (United States)

| popular_vote1 = 1,227,483

| percentage1 = 54.71%

| image2 = x150px

| nominee2 = Phil Bredesen

| party2 = Democratic Party (United States)

| popular_vote2 = 985,450

| percentage2 = 43.92%

| map_image = {{switcher |300px |County results |300px |Precinct results |300px |Congressional district results |default=1}}

| map_size = 300px

| map_caption = Blackburn: {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}} {{legend0|#C21B18|80–90%}} {{legend0|#A80000|>90%}}
Bredesen: {{legend0|#A5B0FF|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}} {{legend0|#0D0596|>90%}}
Tie: {{legend0|#ae8bb1|50%}}
{{legend0|#808080|No data}}

| title = U.S. Senator

| before_election = Bob Corker

| before_party = Republican Party (United States)

| after_election = Marsha Blackburn

| after_party = Republican Party (United States)

}}{{Main|2018 United States Senate election in Tennessee}}

{{See also|List of United States senators from Tennessee}}

Two-term Republican Bob Corker was re-elected with 65% of the vote in 2012. Senator Corker filed his Statement of Candidacy with the Secretary of the U.S. Senate to run for re-election,{{Cite web | url=http://www.chattanoogan.com/2016/11/10/335836/Larry-Crim-Announces-U.S.-Senate-2018.aspx | title=Larry Crim Announces U.S. Senate 2018 Race For Seat Held By Corker | work=chattanoogan.com | date=November 10, 2016 | access-date=February 21, 2017}} but on September 26, 2017, Senator Corker announced his intent to retire.{{Cite web | title=Corker to end Senate career with this term | date=September 26, 2017 | url=https://thehill.com/homenews/senate/352533-corker-retiring-in-2018/ | access-date=September 26, 2017}}

Aaron Pettigrew{{Cite news | url=https://sos-tn-gov-files.s3.amazonaws.com/IssuedPetitions.pdf | title=Tennessee candidates Lists | work=Tennessee Secretary of State | access-date=March 23, 2018}} and Republican U.S. Representative Marsha Blackburn ran for the Republican nomination. Marsha Blackburn became the Republican nominee.

Former Tennessee Governor Phil Bredesen became the Democratic nominee.

{{Election box begin no change |title=Tennessee Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Marsha Blackburn

|votes = 613,513

|percentage = 84.48

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Aaron Pettigrew

|votes = 112,705

|percentage = 15.52

}}{{Election box write-in with party link no change

|votes = 13

|percentage = 0.00

}}{{Election box total no change

|votes = 726,231

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Tennessee Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Phil Bredesen

|votes = 349,718

|percentage = 91.51

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Gary Davis

|votes = 20,170

|percentage = 5.28

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = John Wolfe Jr.

|votes = 12,269

|percentage = 3.21

}}{{Election box total no change

|votes = 382,157

|percentage = 100.00

}}{{Election box end}}{{Election box begin|title=Tennessee general election{{cite web|title=November 6, 2018 Unofficial Election Results|url=https://elections.tn.gov/results.php?ByOffice=United%20States%20Senate|publisher=Tennessee Secretary of State|access-date=November 9, 2018}}}}

{{Election box winning candidate with party link|candidate=Marsha Blackburn|party=Republican Party (United States)|votes=1,227,483|percentage=54.71%|change=-10.18%}}

{{Election box candidate with party link|party=Democratic Party (United States)|candidate=Phil Bredesen|votes=985,450|percentage=43.92%|change=+13.51%}}

{{Election box candidate with party link|party=Independent politician|candidate=Trudy Austin|votes=9,455|percentage=0.42%|change=N/A}}

{{Election box candidate with party link|party=Independent politician|candidate=Dean Hill|votes=8,717|percentage=0.39%|change=N/A}}

{{Election box candidate with party link|party=Independent politician|candidate=Kris L. Todd|votes=5,084|percentage=0.23%|change=N/A}}

{{Election box candidate with party link|party=Independent politician|candidate=John Carico|votes=3,398|percentage=0.15%|change=N/A}}

{{Election box candidate with party link|party=Independent politician|candidate=Breton Phillips|votes=2,226|percentage=0.10%|change=N/A}}

{{Election box candidate with party link|party=Independent politician|candidate=Kevin Lee McCants|votes=1,927|percentage=0.09%|change=N/A}}

{{Election box total|votes=2,243,740|percentage=100.00%|change=N/A}}

{{Election box hold with party link no swing|winner=Republican Party (United States)}}

{{Election box end}}{{Clear}}

Texas

{{Infobox election

| election_name = Texas election

| country = Texas

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Texas

| previous_year = 2012

| next_election = 2024 United States Senate election in Texas

| next_year = 2024

| election_date = November 6, 2018

| turnout = 53.01% (of registered voters)
42.07% (of voting age population){{Cite web|url=https://www.sos.state.tx.us/elections/historical/70-92.shtml|title=Turnout and Voter Registration Figures (1970-current)}}

| image_size = x150px

| image1 = File:Ted Cruz official 116th portrait (cropped).jpg

| nominee1 = Ted Cruz

| party1 = Republican Party (United States)

| popular_vote1 = 4,260,553

| percentage1 = 50.89%

| image2 = Beto O'Rourke April 2019.jpg

| nominee2 = Beto O'Rourke

| party2 = Democratic Party (United States)

| popular_vote2 = 4,045,632

| percentage2 = 48.33%

| title = U.S. Senator

| before_election = Ted Cruz

| before_party = Republican Party (United States)

| after_election = Ted Cruz

| after_party = Republican Party (United States)

| map = {{switcher

| 310px

| County results

| 310px

| Precinct results}}

| map_caption = Cruz: {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}} {{legend0|#c21b18|80–90%}} {{legend0|#a80000|>90%}}
O'Rourke: {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}}

{{legend0|#0D0596|>90%}}
{{legend0|#808080|No data}}

}}{{Main|2018 United States Senate election in Texas}}

{{See also|List of United States senators from Texas}}

One-term Republican Ted Cruz was elected with 57% of the vote in 2012. He overwhelmingly won the Republican primary on March 6, 2018.{{Cite web | url=https://webservices.sos.state.tx.us/ballot-cert/report.aspx | title=November 6, 2018 General Election Ballot | work=Texas Secretary of State | access-date=September 2, 2018 | archive-date=September 2, 2018 | archive-url=https://web.archive.org/web/20180902151626/https://webservices.sos.state.tx.us/ballot-cert/report.aspx | url-status=dead }}

Television producer Bruce Jacobson,{{Cite web | last=Wang | first=Jackie | url=https://www.dallasnews.com/news/elections/2017/11/16/christian-tv-producer-north-richland-hills-will-challenge-sen-ted-cruz-gop-primary | date=November 16, 2017 | title=Christian TV producer challenging Sen. Ted Cruz in GOP primary | work=Dallas Morning News | access-date=November 16, 2017}} Houston energy attorney Stefano de Stefano,{{Cite web | date=June 9, 2017 | work=FEC Form 1 | url=http://docquery.fec.gov/pdf/208/201706120200155208/201706120200155208.pdf | access-date=June 14, 2017 | title=Statement of Organization}} former mayor of La Marque Geraldine Sam,{{Cite web | last=Tinsley | first=Anna M. | date=November 11, 2017 | url=http://www.star-telegram.com/news/politics-government/election/article184168366.html | title=2018 Election: First day of filing begins with a rush of candidates | work=Fort Worth Star-Telegram | access-date=November 16, 2017}} Mary Miller,{{Cite web | title=MILLER, MARY ANN - Candidate overview | url=https://www.fec.gov/data/candidate/S8TX00343 | website=FEC.gov}} and Thomas Dillingham{{Cite news | url=http://www.star-telegram.com/news/local/community/fort-worth/article187347883.html | title=Former Birdville schools employee joins GOP race to unseat Sen. Ted Cruz | work=Star-Telegram | access-date=December 1, 2017}} were Cruz's opponents.

U.S. Representative Beto O'Rourke won the Democratic nomination on March 6, 2018. Other Democrats who ran include Irasema Ramirez Hernandez{{Cite web | url=https://www.fec.gov/data/candidate/S8TX00327 | title=HERNANDEZ, IRASEMA RAMIREZ - Candidate overview | website=FEC.gov}} and Edward Kimbrough.{{Cite web | last=Tinsley | first=Anna | url=http://www.star-telegram.com/news/politics-government/election/article188979339.html | date=December 9, 2017 | title=Deadline for 2018 primary ballot: Monday. Here's who is already in the race | work=Fort Worth Star-Telegram | access-date=December 17, 2017}}

Nurse Carl Bible ran as an independent.{{Cite web | url=https://www.fec.gov/data/candidate/S8TX00335 | title=BIBLE, CARL ALEXANDER - Candidate overview | website=FEC.gov | access-date=December 21, 2017}} Bob McNeil ran as the candidate of the American Citizen Party.{{Cite web | url=https://americancitizenparty.us | title=AmericanCitizenParty.us | website=americancitizenparty.us | access-date=September 9, 2019 | archive-url=https://web.archive.org/web/20190703035343/http://www.americancitizenparty.us/ | archive-date=July 3, 2019 | url-status=dead }} Neal Dikeman was the Libertarian nominee.{{Cite web|url=https://www.amarillopioneer.com/blog/2018/10/15/libertarian-candidate-files-fec-complaint-against-orourke|title=Libertarian Candidate Files FEC Complaint Against O'Rourke|website=The Amarillo Pioneer|date=October 15, 2018 |language=en-US|access-date=October 28, 2019}}

O'Rourke ran a strong campaign, creating a close race in what has traditionally been a Republican stronghold.{{Cite web|url=https://www.texastribune.org/2018/11/09/ted-cruz-beto-orourke-closest-texas-race-40-years/|title=How the race between Ted Cruz and Beto O'Rourke became the closest in Texas in 40 years|first=Patrick Svitek and Abby|last=Livingston|date=November 9, 2018|website=The Texas Tribune}} Nevertheless, Cruz was narrowly re-elected to a second term.{{Cite news | url=https://www.politico.com/election-results/2018/texas | title=Texas Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Texas Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Ted Cruz (incumbent)

|votes = 1,322,724

|percentage = 85.36

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Mary Miller

|votes = 94,715

|percentage = 6.11

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Bruce Jacobson Jr.

|votes = 64,791

|percentage = 4.18

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Stefano de Stefano

|votes = 44,456

|percentage = 2.87

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Geraldine Sam

|votes = 22,887

|percentage = 1.48

}}{{Election box total no change

|votes = 1,549,573

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Texas Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Beto O'Rourke

|votes = 644,632

|percentage = 61.81

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Sema Hernandez

|votes = 247,424

|percentage = 23.72

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Edward Kimbrough

|votes = 150,858

|percentage = 14.47

}}{{Election box total no change

|votes = 1,042,914

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Texas general election}}

{{Election box winning candidate with party link

|party = Republican Party (US)

|candidate = Ted Cruz (incumbent)

|votes = 4,260,553

|percentage = 50.89%

|change = –5.57

}}{{Election box candidate with party link

|party = Democratic Party (US)

|candidate = Beto O'Rourke

|votes = 4,045,632

|percentage = 48.33%

|change = +7.71

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Neal Dikeman

|votes = 65,470

|percentage = 0.78%

|change = –1.28

}}{{Election box total

|votes = 8,371,655

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Republican Party (US)

}}{{Election box end}}

{{Clear}}

Utah

{{Infobox election

| election_name = Utah election

| country = Utah

| flag_year = 2011

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Utah

| previous_year = 2012

| next_election = 2024 United States Senate election in Utah

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 74.15%

| nominee1 = Mitt Romney

| image1 = Mitt Romney official US Senate portrait (cropped).jpg

| party1 = Republican Party (US)

| popular_vote1 = 665,215

| percentage1 = 62.59%

| nominee2 = Jenny Wilson

| image2 = 3x4.svg

| party2 = Democratic Party (US)

| popular_vote2 = 328,541

| percentage2 = 30.91%

| map_image = 2018 United States Senate election in Utah results map by county.svg

| map_size = 200px

| map_caption = Romney: {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#D72F30|70–80%}} {{legend0|#C21B18|80–90%}}
Wilson: {{legend0|#A5B0FF|40–50%}} {{legend0|#7996e2|50–60%}}

| title = U.S. senator

| before_election = Orrin Hatch

| before_party = Republican Party (US)

| after_election = Mitt Romney

| after_party = Republican Party (US)

}}

{{Main|2018 United States Senate election in Utah}}

{{See also|List of United States senators from Utah}}

Seven-term Republican Orrin Hatch was re-elected with 65% of the vote in 2012. Hatch was the President pro tempore of the United States Senate, as well as the second most-senior Senator. Before the 2012 election, Hatch said that he would retire at the end of his seventh term if he was re-elected.{{Cite news | last=Lederman | first=Josh | title=Hatch will retire in 2018 if he wins re-election | url=https://thehill.com/blogs/ballot-box/senate-races/108627-hatch-will-retire-in-2018-if-he-wins-reelection/ | newspaper=The Hill | date=March 3, 2012}} Hatch initially announced his re-election campaign on March 9, 2017,{{Cite news | url=http://www.cnn.com/2017/03/09/politics/orrin-hatch-re-election-plans-senate | title=First on CNN: After lobbying from Trump, Orrin Hatch plans to run again | publisher=CNN | last=Raju | first=Manu | date=March 9, 2017 | access-date=March 11, 2017}}{{Cite news | url=https://www.deseret.com/2014/11/6/20552158/sen-orrin-hatch-leaves-door-ajar-for-run-in-2018/ | title=Sen. Orrin Hatch leaves door ajar for run in 2018 | author=Dennis Romboy | work=Deseret News | date=November 6, 2014 | access-date=December 12, 2014}} but later announced his plans to retire on January 2, 2018. Former 2012 Republican presidential nominee Mitt Romney was running for the seat.{{Cite web | url=https://elections.utah.gov/2018-candidate-filings | title=Utah Candidats Lists | publisher=Utah Lieutenant Governor Election | access-date=March 13, 2018}}

Professor James Singer was running for the Democratic nomination, but he dropped out and endorsed Salt Lake County Councilwoman Jenny Wilson, who made her Senate bid official on July 17, 2017.{{Cite news | url=http://www.sltrib.com/home/5231712-155/navajo-candidate-announces-bid-as-democrat | title=Navajo candidate announces bid as Democrat for Hatch's seat | work=The Salt Lake Tribune | last=Tanner | first=Courtney | date=May 3, 2017 | access-date=June 13, 2017}}{{Cite news | url=http://www.rollcall.com/news/politics/navajo-hatch-challenger-ends-campaign-lack-money | title=Navajo Candidate Drops Out of Race Against Hatch | work=Roll Call | last=Breiner | first=Andrew | date=June 21, 2017 | access-date=June 21, 2017}} Danny Drew{{Cite news | url=http://utahpolicy.com/index.php/features/today-at-utah-policy/12895-another-democrat-looking-to-knock-off-hatch-in-2018 | title=Another Democrat looking to knock off Hatch in 2008 | work=Utah Policy | last=Schott | first=Bryan | date=April 12, 2017 | access-date=April 12, 2017}}{{Cite web | url=http://drewforutah.com | work=Danny Drew For U.S. Senate | title=Thank You | access-date=October 3, 2017 | archive-url=https://web.archive.org/web/20171004120336/http://drewforutah.com/ | archive-date=October 4, 2017 | url-status=dead }} also was running, but dropped out and endorsed Jenny Wilson. Mitchell Kent Vice was defeated for the Democratic nomination by Wilson.

Mitt Romney was easily elected, defeating Wilson.{{Cite web|date=2018-11-07|title=Mitt Romney Wins Utah Senate Election|url=https://www.bloomberg.com/news/articles/2018-11-07/trump-critic-romney-heading-to-u-s-senate-after-utah-victory|access-date=December 2, 2018|website=Bloomberg.com}}

{{Election box begin no change |title=Utah Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Mitt Romney

|votes = 240,021

|percentage = 71.27

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Mike Kennedy

|votes = 96,771

|percentage = 28.73

}}{{Election box total no change

|votes = 336,792

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Utah general election}}

{{Election box winning candidate with party link

|party = Republican Party (US)

|candidate = Mitt Romney

|votes = 665,215

|percentage = 62.59%

|change = –2.72

}}{{Election box candidate with party link

|party = Democratic Party (US)

|candidate = Jenny Wilson

|votes = 328,541

|percentage = 30.91%

|change = +0.93

}}{{Election box candidate with party link

|party = Constitution Party (US)

|candidate = Tim Aalders

|votes = 28,774

|percentage = 2.71%

|change = –0.46

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Craig Bowden

|votes = 27,607

|percentage = 2.60%

|change = N/A

}}{{Election box candidate with party link

|party = Independent American Party

|candidate = Reed McCandless

|votes = 12,708

|percentage = 1.20%

|change = N/A

}}{{Election box write-in with party link

|votes = 52

|percentage = 0.00%

|change = ±0.00

}}{{Election box total

|votes = 1,062,897

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Republican Party (US)

}}{{Election box end}}

{{Clear}}

Vermont

{{Infobox election

| election_name = Vermont election

| country = Vermont

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Vermont

| previous_year = 2012

| next_election = 2024 United States Senate election in Vermont

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 55.57%

| nominee1 = Bernie Sanders

| image1 = Bernie Sanders in March 2020 (cropped).jpg

| party1 = Independent politician

| popular_vote1 = 183,649

| percentage1 = 67.44%

| nominee2 = Lawrence Zupan

| image2 = Lawrence Zupan (cropped).jpg

| party2 = Republican Party (US)

| popular_vote2 = 74,815

| percentage2 = 27.47%

| map = {{switcher

|x220px

|County results

|x220px

|Municipality results}}

| map_size = 220px

| map_caption = Sanders: {{legend0|#D9D9D9|40–50%}} {{legend0|#BDBDBD|50–60%}} {{legend0|#969696|60–70%}}
{{legend0|#737373|70–80%}} {{legend0|#414042ff|80–90%}}


Zupan: {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}}
Tie: {{legend0|#CDAFDC|40–50%}}

| title = U.S. senator

| before_election = Bernie Sanders

| before_party = Independent politician

| after_election = Bernie Sanders

| after_party = Independent politician

}}

{{Main|2018 United States Senate election in Vermont}}

{{See also|List of United States senators from Vermont}}

Two-term Independent Senator Bernie Sanders was re-elected with 71% of the vote in 2012. Sanders, one of two independent members of Congress, has caucused with the Democratic Party since taking office in 2007. In November 2015, Sanders announced his plans to run as a Democrat, rather than an independent, in all future elections. He won the nomination easily.{{Cite web | url=https://www.sec.state.vt.us/media/914034/2018-general-election-candidate-listing.xlsx | title=2018 General Election Candidates listing | website=Vermont Secretary of State | access-date=August 14, 2018 | archive-date=August 14, 2018 | archive-url=https://web.archive.org/web/20180814001656/https://www.sec.state.vt.us/media/914034/2018-general-election-candidate-listing.xlsx | url-status=dead }}

Sanders easily won election to a third term.{{Cite news | url=https://www.politico.com/election-results/2018/vermont | title=Vermont Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Vermont Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Bernie Sanders (incumbent)

|votes = 63,683

|percentage = 94.02

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Folsade Adeluola

|votes = 3,766

|percentage = 5.56

}}{{Election box write-in with party link no change

|votes = 281

|percentage = 0.41

}}{{Election box total no change

|votes = 67,730

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Vermont Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = H. Brooke Paige

|votes = 9,805

|percentage = 37.37

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Lawrence Zupan

|votes = 9,383

|percentage = 35.86

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Jasdeep Pannu

|votes = 4,527

|percentage = 17.30

}}{{Election box candidate with party link no change

|party = Write-in

|candidate = Bernie Sanders (incumbent)

|votes = 1,081

|percentage = 4.13

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Rocky De La Fuente

|votes = 1,057

|percentage = 4.04

}}{{Election box write-in with party link no change

|votes = 314

|percentage = 1.20

}}{{Election box total no change

|votes = 26,167

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Vermont general election}}

{{Election box winning candidate with party link

|party = Independent politician

|candidate = Bernie Sanders (incumbent)

|votes = 183,649

|percentage = 67.36%

|change = –3.64

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Lawrence Zupan

|votes = 74,815

|percentage = 27.44%

|change = +2.54

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Brad Peacock

|votes = 3,665

|percentage = 1.34%

|change = N/A

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Russell Beste

|votes = 2,763

|percentage = 1.01%

|change = N/A

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Edward Gilbert Jr.

|votes = 2,244

|percentage = 0.82%

|change = N/A

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Folasade Adeluola

|votes = 1,979

|percentage = 0.73%

|change = N/A

}}{{Election box candidate with party link

|party = Liberty Union Party

|candidate = Reid Kane

|votes = 1,171

|percentage = 0.43%

|change = –0.43

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Jon Svitavsky

|votes = 1,130

|percentage = 0.41%

|change = N/A

}}{{Election box candidate with party link

|party = Independent politician

|candidate = Bruce Busa

|votes = 914

|percentage = 0.34%

|change = N/A

}}{{Election box write-in with party link

|votes = 294

|percentage = 0.11%

|change = +0.03

}}{{Election box total

|votes = 272,624

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Independent politician

}}{{Election box end}}

{{Clear}}

Virginia

{{Infobox election

| election_name = Virginia election

| country = Virginia

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Virginia

| previous_year = 2012

| next_election = 2024 United States Senate election in Virginia

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 59.14%

| nominee1 = Tim Kaine

| image1 = Tim Kaine 116th official portrait.jpg

| party1 = Democratic Party (US)

| popular_vote1 = 1,910,370

| percentage1 = 57.00%

| nominee2 = Corey Stewart

| image2 = Corey Stewart 8 by 10 crop.jpg

| party2 = Republican Party (US)

| popular_vote2 = 1,374,313

| percentage2 = 41.00%

| map_image = 2018 United States Senate election in Virginia results map by county.svg

| map_size = 300px

| map_caption = Kaine: {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}}
Stewart: {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}

| title = U.S. senator

| before_election = Tim Kaine

| before_party = Democratic Party (US)

| after_election = Tim Kaine

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Virginia}}

{{See also|List of United States senators from Virginia}}

One-term Democrat Tim Kaine was elected with 53% of the vote in 2012. He was re-nominated unopposed.{{Cite news | url=https://www.elections.virginia.gov/Files/CastYourBallot/CandidateList/Primary%20Candidate%20List.pdf | title=Certified Candidates and Ballot Order for June 12, 2018 Primary Elections | work=Virginia Department of Elections | access-date=April 5, 2018 | archive-url=https://web.archive.org/web/20180619001219/https://www.elections.virginia.gov/Files/CastYourBallot/CandidateList/Primary%20Candidate%20List.pdf | archive-date=June 19, 2018 | url-status=dead }} Prince William County Supervisor Corey Stewart was the Republican nominee. Matt Waters was the Libertarian nominee.{{Cite press release | url=http://christiannewswire.com/news/9627481257.html | title=Waters for US Senate Turns in Over 14,000 Signatures | work=Christian Newswire | date=June 12, 2018 | access-date=November 8, 2018}} Kaine defeated Stewart with 57% of the vote. Stewart received 41% of the vote.{{Cite news | url=https://wtop.com/local-politics-elections-news/2018/11/kaine-stewart-senate-virginia | title=Kaine tops Stewart to retain Va. seat in US Senate | date=November 6, 2018 | publisher=WTOP | access-date=November 7, 2018 }}

{{Election box begin no change |title=Virginia Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Corey Stewart

|votes = 136,610

|percentage = 44.86

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Nick Freitas

|votes = 131,321

|percentage = 43.12

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = E. W. Jackson

|votes = 36,508

|percentage = 11.99

}}{{Election box write-in with party link no change

|votes = 79

|percentage = 0.03

}}{{Election box total no change

|votes = 304,518

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Virginia general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Tim Kaine (incumbent)

|votes = 1,910,370

|percentage = 57.00%

|change = +4.17

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Corey Stewart

|votes = 1,374,313

|percentage = 41.00%

|change = –5.92

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Matt Waters

|votes = 61,565

|percentage = 1.84%

|change = N/A

}}{{Election box write-in with party link

|votes = 5,509

|percentage = 0.16%

|change = –0.09

}}{{Election box total

|votes = 3,351,757

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Washington

{{Infobox election

| election_name = Washington election

| country = Washington

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Washington

| previous_year = 2012

| next_election = 2024 United States Senate election in Washington

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 70.74%

| nominee1 = Maria Cantwell

| image1 = File:Maria Cantwell (cropped).jpg

| party1 = Democratic Party (US)

| popular_vote1 = 1,803,364

| percentage1 = 58.4%

| nominee2 = Susan Hutchison

| image2 = File:SusanHutchison-official (cropped).jpg

| party2 = Republican Party (US)

| popular_vote2 = 1,282,804

| percentage2 = 41.6%

| map_image = 2018 United States Senate election in Washington results map by county.svg

| map_size = 250px

| map_caption = Cantwell: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584CDE|70–80%}}

Hutchison: {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}

| title = U.S. senator

| before_election = Maria Cantwell

| before_party = Democratic Party (US)

| after_election = Maria Cantwell

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Washington}}

{{See also|List of United States senators from Washington}}

Three-term Democrat Maria Cantwell was re-elected with 61% of the vote in 2012. She ran.{{Cite news | url=https://weiapplets.sos.wa.gov/elections/Candidates/WhoFiled?countyCode=XX | title=2018 Candidates Who Have Filed | work=Washington Secretary of State | access-date=May 18, 2018}}

Washington holds non-partisan blanket primaries, in which the top two finishers advance to the general election regardless of party. Cantwell and former state Republican Party chair Susan Hutchison faced each other in November.

Cantwell won re-election by a large margin.{{Cite news | url=https://www.politico.com/election-results/2018/washington | title=Washington Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Washington blanket primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Maria Cantwell (incumbent)

|votes = 929,961

|percentage = 54.68

}}{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Susan Hutchison

|votes = 413,317

|percentage = 24.30

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Keith Swank

|votes = 39,818

|percentage = 2.34

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Joey Gibson

|votes = 38,676

|percentage = 2.27

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Clint Tannehill

|votes = 35,770

|percentage = 2.10

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Dave Bryant

|votes = 33,962

|percentage = 2.00

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Art Coday

|votes = 30,654

|percentage = 1.80

}}{{Election box candidate with party link no change

|party = Independent politician

|candidate = Jennifer Ferguson

|votes = 25,224

|percentage = 1.48

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Tim Owen

|votes = 23,167

|percentage = 1.36

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Matt Hawkins

|votes = 13,324

|percentage = 0.78

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Don Rivers

|votes = 12,634

|percentage = 0.74

}}{{Election box candidate with party link no change

|party = Libertarian Party (US)

|candidate = Mike Luke

|votes = 12,302

|percentage = 0.72

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Glen Stockwell

|votes = 11,611

|percentage = 0.68

}}{{Election box candidate with party link no change

|party = Independent politician

|candidate = Thor Amundson

|votes = 9,393

|percentage = 0.55

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Mohammad Said

|votes = 8,649

|percentage = 0.51

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Matthew Heines

|votes = 7,737

|percentage = 0.45

}}{{Election box candidate with party link no change

|party = Freedom Socialist Party

|candidate = Steve Hoffman

|votes = 7,390

|percentage = 0.43

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Goodspaceguy

|votes = 7,057

|percentage = 0.41

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = John Orlinski

|votes = 6,905

|percentage = 0.41

}}{{Election box candidate with party link no change

|party = Independent politician

|candidate = Dave Strider

|votes = 6,821

|percentage = 0.40

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Rocky De La Fuente

|votes = 5,724

|percentage = 0.34

}}{{Election box candidate with party link no change

|party = Green Party (US)

|candidate = James Robert Deal

|votes = 3,849

|percentage = 0.23

}}{{Election box candidate with party link no change

|party = Independent politician

|candidate = Sam Wright

|votes = 3,761

|percentage = 0.22

}}{{Election box candidate with party link no change

|party = Independent politician

|candidate = Brad Chase

|votes = 2,655

|percentage = 0.16

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = George Kalberer

|votes = 2,448

|percentage = 0.14

}}{{Election box candidate with party link no change

|party = Independent politician

|candidate = Charlie Jackson

|votes = 2,411

|percentage = 0.14

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = RC Smith

|votes = 2,238

|percentage = 0.13

}}{{Election box candidate with party link no change

|party = Independent politician

|candidate = Jon Butler

|votes = 2,016

|percentage = 0.12

}}{{Election box candidate with party link no change

|party = Independent politician

|candidate = Alex Tsimerman

|votes = 1,366

|percentage = 0.08

}}{{Election box total no change

|votes = 1,700,840

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Washington general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Maria Cantwell (incumbent)

|votes = 1,803,364

|percentage = 58.43%

|change = –2.02

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Susan Hutchison

|votes = 1,282,804

|percentage = 41.57%

|change = +2.02

}}{{Election box total

|votes = 3,086,168

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

West Virginia

{{Infobox election

| election_name = West Virginia election

| country = West Virginia

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in West Virginia

| previous_year = 2012

| next_election = 2024 United States Senate election in West Virginia

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 47.04%

| nominee1 = Joe Manchin

| image1 = Senator Manchin (cropped 2).jpg

| party1 = Democratic Party (US)

| popular_vote1 = 290,510

| percentage1 = 49.57%

| nominee2 = Patrick Morrisey

| image2 = Patrick Morrisey by Gage Skidmore.jpg

| party2 = Republican Party (US)

| popular_vote2 = 271,113

| percentage2 = 46.26%

| map_image = 2018 United States Senate election in West Virginia results map by county.svg

| map_size = 250px

| map_caption = Manchin: {{legend0|#a5b0ff|40–50%}} {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}
Morrisey: {{legend0|#ffb2b2|40–50%}} {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#d72f30|70–80%}}

| title = U.S. senator

| before_election = Joe Manchin

| before_party = Democratic Party (US)

| after_election = Joe Manchin

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in West Virginia}}

{{See also|List of United States senators from West Virginia}}

One-term Democrat Joe Manchin was elected with 61% of the vote in 2012. He originally won the seat in a 2010 special election. Manchin ran for re-election and won the May 8 Democratic primary.{{Cite web | url=https://sos.wv.gov/elections/Documents/2018%20Primary%20Certified%20List%20of%20Candidates.pdf | title=West Virginia Candidates Lists | work=West Virginia Secretary of State | access-date=March 4, 2018 | archive-url=https://web.archive.org/web/20180304231851/https://sos.wv.gov/elections/Documents/2018%20Primary%20Certified%20List%20of%20Candidates.pdf | archive-date=March 4, 2018 | url-status=dead | df=mdy-all }} Environmental activist Paula Jean Swearengin, also ran for the Democratic nomination.

West Virginia Attorney General Patrick Morrisey received the Republican nomination in the May 8 primary. Representative Evan Jenkins, coal miner Bo Copley, Jack Newbrough, Don Blankenship, and Tom Willis ran for the Republican nomination.

Despite recent Republican successes in West Virginia, Manchin was able to win re-election to a second term.{{Cite news | url=https://www.politico.com/election-results/2018/west-virginia | title=West Virginia Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=West Virginia Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Joe Manchin (incumbent)

|votes = 112,658

|percentage = 69.86

}}{{Election box candidate with party link no change

|party = Democratic Party (US)

|candidate = Paula Jean Swearengin

|votes = 48,594

|percentage = 30.14

}}{{Election box total no change

|votes = 161,252

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=West Virginia Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Patrick Morrisey

|votes = 48,007

|percentage = 34.90

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Evan Jenkins

|votes = 40,185

|percentage = 29.21

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Don Blankenship

|votes = 27,478

|percentage = 19.97

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Tom Willis

|votes = 13,540

|percentage = 9.84

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Bo Copley

|votes = 4,248

|percentage = 3.09

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Jack Newbrough

|votes = 4,115

|percentage = 2.99

}}{{Election box total no change

|votes = 137,573

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=West Virginia general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Joe Manchin (incumbent)

|votes = 290,510

|percentage = 49.57%

|change = –11.00

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Patrick Morrisey

|votes = 271,113

|percentage = 46.26%

|change = +9.79

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Rusty Hollen

|votes = 24,411

|percentage = 4.17%

|change = N/A

}}{{Election box total

|votes = 586,034

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Wisconsin

{{Infobox election

| election_name = Wisconsin election

| country = Wisconsin

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Wisconsin

| previous_year = 2012

| next_election = 2024 United States Senate election in Wisconsin

| next_year = 2024

| election_date =

| image_size = 125x136px

| turnout = 81.81%

| nominee1 = Tammy Baldwin

| image1 = Tammy Baldwin, official portrait, 113th Congress.jpg

| party1 = Democratic Party (US)

| popular_vote1 = 1,472,914

| percentage1 = 55.36%

| nominee2 = Leah Vukmir

| image2 = Scott Walker campaign announcement . (19054459254) (cropped).jpg

| party2 = Republican Party (US)

| popular_vote2 = 1,184,885

| percentage2 = 44.53%

| map_image = 2018 United States Senate election in Wisconsin results map by county.svg

| map_size = 220px

| map_caption = Baldwin: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}} {{legend0|#584cde|70–80%}} {{legend0|#3933e5|80–90%}}
Vukmir: {{legend0|#e27f7f|50–60%}} {{legend0|#d75d5d|60–70%}}

| title = U.S. senator

| before_election = Tammy Baldwin

| before_party = Democratic Party (US)

| after_election = Tammy Baldwin

| after_party = Democratic Party (US)

}}

{{Main|2018 United States Senate election in Wisconsin}}

{{See also|List of United States senators from Wisconsin}}

One-term Democrat Tammy Baldwin was elected with 51% of the vote in 2012. She ran.

State Senator Leah Vukmir and businessman and member of Wisconsin Board of Veterans Affairs Kevin Nicholson{{Cite web | url=http://elections.wi.gov/sites/default/files/page/candidates_tracking_by_office_as_of_6_8_18_pdf_19565.pdf | title=Candidate Tracking by Office | work=Wisconsin Election Commission | access-date=June 11, 2018 }}{{Dead link|date=September 2019 |bot=InternetArchiveBot |fix-attempted=yes }} ran for the Republican nomination, with Vukmir proceeding to the general election.

Baldwin was re-elected with over 55% of the vote.{{Cite news | url=https://www.politico.com/election-results/2018/wisconsin | title=Wisconsin Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018 | language=en}}

{{Election box begin no change |title=Wisconsin Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Tammy Baldwin (incumbent)

|votes = 510,812

|percentage = 99.64

}}{{Election box write-in with party link no change

|votes = 1,848

|percentage = 0.36

}}{{Election box total no change

|votes = 512,660

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Wisconsin Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = Leah Vukmir

|votes = 217,230

|percentage = 48.90

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Kevin Nicholson

|votes = 191,276

|percentage = 43.06

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = George Lucia

|votes = 18,786

|percentage = 4.23

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Griffin Jones

|votes = 8,699

|percentage = 1.96

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Charles Barman

|votes = 7,959

|percentage = 1.79

}}{{Election box write-in with party link no change

|votes = 303

|percentage = 0.07

}}{{Election box total no change

|votes = 444,253

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Wisconsin general election}}

{{Election box winning candidate with party link

|party = Democratic Party (US)

|candidate = Tammy Baldwin (incumbent)

|votes = 1,472,914

|percentage = 55.36%

|change = +3.95

}}{{Election box candidate with party link

|party = Republican Party (US)

|candidate = Leah Vukmir

|votes = 1,184,885

|percentage = 44.53%

|change = –1.33

}}{{Election box write-in with party link

|votes = 2,964

|percentage = 0.11%

|change = ±0.00

}}{{Election box total

|votes = 2,660,763

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Democratic Party (US)

}}{{Election box end}}

{{Clear}}

Wyoming

{{Infobox election

| election_name = Wyoming election

| country = Wyoming

| type = presidential

| ongoing = no

| previous_election = 2012 United States Senate election in Wyoming

| previous_year = 2012

| next_election = 2024 United States Senate election in Wyoming

| next_year = 2024

| election_date =

| image_size = x136px

| turnout = 77.43%

| image1 = John Barrasso official portrait 112th Congress.jpg

| nominee1 = John Barrasso

| party1 = Republican Party (US)

| popular_vote1 = 136,210

| percentage1 = 66.96%

| image2 = Gary Trauner at Campbell County League of Women Voters' General Election Candidates' Forum in Gillette, Wyoming (1).jpg

| nominee2 = Gary Trauner

| party2 = Democratic Party (US)

| popular_vote2 = 61,227

| percentage2 = 30.10%

| map_image = 2018 United States Senate election in Wyoming results map by county.svg

| map_size = 250px

| map_caption = County results
Barrasso: {{legend0|#E27F7F|50–60%}} {{legend0|#d75d5d|60–70%}} {{legend0|#D72F30|70–80%}} {{legend0|#C21B18|80–90%}}
Trauner: {{legend0|#7996e2|50–60%}} {{legend0|#6674de|60–70%}}

| title = U.S. senator

| before_election = John Barrasso

| before_party = Republican Party (US)

| after_election = John Barrasso

| after_party = Republican Party (US)

}}

{{Main|2018 United States Senate election in Wyoming}}

{{See also|List of United States senators from Wyoming}}

One-term Republican John Barrasso was elected with 76% of the vote in 2012. Barrasso was appointed to the seat in 2007 and won a special election in 2008. He ran.{{Cite web | url=http://soswy.state.wy.us/Elections/Docs/2018/WY_Primary_Election_Candidates.pdf | title=2018 Primary Election Candidate Roster | work=Wyoming Secretary of State | access-date=May 23, 2018}}

Gary Trauner, a Jackson Hole businessman and U.S. House candidate in 2006 and 2008, was the Democratic nominee.

Barrasso was easily elected to a second term, defeating Trauner.{{Cite news | url=https://www.politico.com/election-results/2018/wyoming | title=Wyoming Election Results 2018: Live Midterm Map by County & Analysis | access-date=December 2, 2018}}

{{Election box begin no change |title=Wyoming Republican primary}}

{{Election box winning candidate with party link no change

|party = Republican Party (US)

|candidate = John Barrasso (incumbent)

|votes = 74,292

|percentage = 64.76

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Dave Dodson

|votes = 32,647

|percentage = 28.46

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = John Holtz

|votes = 2,981

|percentage = 2.60

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Charlie Hardy

|votes = 2,377

|percentage = 2.07

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Rocky De La Fuente

|votes = 1,280

|percentage = 1.12

}}{{Election box candidate with party link no change

|party = Republican Party (US)

|candidate = Anthony Van Risseghem

|votes = 870

|percentage = 0.76

}}{{Election box write-in with party link no change

|votes = 267

|percentage = 0.23

}}{{Election box total no change

|votes = 114,714

|percentage = 100.00

}}{{Election box end}}

{{Election box begin no change |title=Wyoming Democratic primary}}

{{Election box winning candidate with party link no change

|party = Democratic Party (US)

|candidate = Gary Trauner

|votes = 17,562

|percentage = 98.90

}}{{Election box write-in with party link no change

|votes = 195

|percentage = 1.10

}}{{Election box total no change

|votes = 17,757

|percentage = 100.00

}}{{Election box end}}

{{Election box begin |title=Wyoming general election}}

{{Election box winning candidate with party link

|party = Republican Party (US)

|candidate = John Barrasso (incumbent)

|votes = 136,210

|percentage = 66.96%

|change = –8.70

}}{{Election box candidate with party link

|party = Democratic Party (US)

|candidate = Gary Trauner

|votes = 61,227

|percentage = 30.10%

|change = +8.45

}}{{Election box candidate with party link

|party = Libertarian Party (US)

|candidate = Joseph Porambo

|votes = 5,658

|percentage = 2.78%

|change = N/A

}}{{Election box write-in with party link

|votes = 325

|percentage = 0.16%

|change = –0.01

}}{{Election box total

|votes = 203,420

|percentage = 100.00%

}}{{Election box hold with party link no swing

|winner = Republican Party (US)

}}{{Election box end}}

{{Clear}}

See also

Notes

{{Notelist|40em}}

References

{{Reflist}}

{{2018 United States elections}}

{{United States Senate elections}}

Category:Mitch McConnell

Category:Chuck Schumer