Colorado's 1st congressional district

{{Infobox U.S. congressional district

| state = Colorado

| district number = 1

| image name = {{maplink|frame=yes|plain=yes|from=Colorado's 1st congressional district (2023–2033).map|frame-height=300|frame-width=400|frame-latitude=39.76|frame-longitude=-104.86|zoom=10|overlay=125px}}

| image width =

| image caption = Interactive map of district boundaries since January 3, 2023

| representative = Diana DeGette

| party = Democratic

| residence = Denver

|english area =

|metric area =

|distribution ref={{Cite web|last=|first=|date=|title=Congressional Districts Relationship Files (State-based)|url=https://www.census.gov/geo/maps-data/data/cd_state.html|url-status=dead|archive-url=https://web.archive.org/web/20190327085946/https://www.census.gov/geo/maps-data/data/cd_state.html|archive-date=March 27, 2019|access-date=January 24, 2021|website=United States Census Bureau|via=Wayback Machine}}

|percent urban = 100

|percent rural = 0

|population = 722,087{{Cite web|date=|others=Powered by American Community Survey and County Business Patterns|title=My Congressional District|url=https://www.census.gov/mycd/?st=08&cd=01|url-status=live|archive-url=https://web.archive.org/web/20181228034948/https://www.census.gov/mycd/?st=08&cd=01 |archive-date=December 28, 2018 |access-date=September 21, 2024|website=United States Census Bureau|language=EN-US}}

|population year = 2023

|median income = $93,793{{Cite web|date=|others=Powered by American Community Survey and County Business Patterns|title=My Congressional District|url=https://www.census.gov/mycd/?st=08&cd=01|url-status=live|archive-url=https://web.archive.org/web/20181228034948/https://www.census.gov/mycd/?st=08&cd=01 |archive-date=December 28, 2018 |access-date=September 21, 2024|website=United States Census Bureau|language=EN-US}}

| percent white = 54.4

| percent hispanic = 27.8

| percent black = 8.5

| percent asian = 3.8

| percent more than one race = 4.2

| percent other race = 1.2

| cpvi = D+29{{Cite web|title=2025 Cook PVI℠: District Map and List (119th Congress)|url=https://www.cookpolitical.com/cook-pvi/2025-partisan-voting-index/district-map-and-list|access-date=2025-04-05|website=Cook Political Report|language=en}}

}}

Colorado's 1st congressional district is a congressional district in the U.S. state of Colorado, based primarily in the City and County of Denver in the central part of the state. The district includes almost all of the City and County of Denver, and the Denver enclaves of Glendale and Holly Hills. A small portion of the City and County of Denver near Four Square Mile is located in Colorado's 6th congressional district.

The district has been represented by Democrat Diana DeGette since 1997. An urban and diverse district based in the heart of Metropolitan Denver, and with a Cook Partisan Voting Index rating of D+29, it is the most Democratic district in both Colorado and the Mountain West. Only two Republicans have been elected to the seat since the Great Depression: Dean M. Gillespie was the district's representative from 1944 to 1947; and Mike McKevitt from 1971 to 1973, winning thanks to an ideological split among Denver Democrats. No Republican has even notched 30% of the vote in the district after 1998.

History

=1990s=

Following the 1990 United States census and consequential redrawing of Colorado's congressional districts, the 1st congressional district consisted of all of the City and County of Denver and parts of Adams, Arapahoe, and Jefferson counties.

=2000s=

Following the 2000 United States census and consequential redistricting of Colorado's congressional districts, the 1st congressional district consisted of all of the City and County of Denver and parts of Arapahoe County, including parts or all of the cities of Englewood, Cherry Hills Village, Sheridan, Aurora, and Glendale.

=2010s=

Following the 2010 United States census and consequential redistricting of Colorado's congressional districts, the 1st congressional district consisted of all of the City and County of Denver and parts of Arapahoe County including parts or all of the cities of Englewood, Cherry Hills Village, Sheridan, Aurora, and Glendale. The 1st district also took in additional area in the southwestern suburbs which included parts of Jefferson County and the CDPs of Columbine and Ken Caryl.

=2020s=

Following the 2020 United States census and consequential redistricting of Colorado's congressional districts, the 1st congressional district consisted of all of the City and County of Denver and parts of Arapahoe County that are enclaves within the Denver city borders such as Glendale and Holly Hills: the Jefferson County portions were moved to the 7th District, while the southern Arapahoe County suburbs were moved to the Aurora-based 6th District.

Composition

For the 118th and successive Congresses (based on redistricting following the 2020 census), the district contains all or portions of the following counties and communities:https://www2.census.gov/geo/maps/cong_dist/cd118/cd_based/ST08/CD118_CO01.pdf

Arapahoe County (2)

: Glendale, Holly Hills

Denver County (1)

: Denver (part; also 6th)

Recent election results from statewide races

class=wikitable

! Year

! Office

! Resultshttps://davesredistricting.org/maps#viewmap::39f44408-23f7-439d-b7eb-923da58b63df{{Cite web|url=https://historicalelectiondata.coloradosos.gov/eng/contests/view/25583/aggregate_by:9|title=State of Colorado Elections Database » 2022 Nov 8 :: General Election :: Attorney General :: State of Colorado|website=State of Colorado Elections Database|accessdate=August 21, 2024|archive-url=https://web.archive.org/web/20240710230926/https://historicalelectiondata.coloradosos.gov/eng/contests/view/25583/aggregate_by:9|archive-date=2024-07-10|url-status=dead}}{{Cite web|url=https://historicalelectiondata.coloradosos.gov/eng/contests/view/25582/aggregate_by:9|title=State of Colorado Elections Database » 2022 Nov 8 :: General Election :: State Treasurer :: State of Colorado|website=State of Colorado Elections Database|accessdate=August 18, 2024|archive-url=https://web.archive.org/web/20240710231710/https://historicalelectiondata.coloradosos.gov/eng/contests/view/25582/aggregate_by:9|archive-date=2024-07-10|url-status=dead}}

rowspan=2|2008

| President

| align="right" {{party shading/Democratic}}|Obama 75% - 23%

Senate

| align="right" {{party shading/Democratic}}|Udall 73% - 23%

rowspan=5|2010

| Senate

| align="right" {{party shading/Democratic}}|Bennet 71% - 24%

Governor

| align="right" {{party shading/Democratic}}|Hickenlooper 74% - 4%

Attorney General

| align="right" {{party shading/Democratic}}|Garnett 67% - 33%

Secretary of State

| align="right" {{party shading/Democratic}}|Buescher 68% - 27%

Treasurer

| align="right" {{party shading/Democratic}}|Kennedy 73% - 27%

|2012

| President

| align="right" {{party shading/Democratic}}|Obama 75% - 25%

|2014

| Senate

| align="right" {{party shading/Democratic}}|Udall 70% - 25%

rowspan=2|2016

| President

| align="right" {{party shading/Democratic}}|Clinton 74% - 19%

Senate

| align="right" {{party shading/Democratic}}|Bennet 73% - 22%

rowspan=2|2018

| Governor

| align="right" {{party shading/Democratic}}|Polis 77% - 20%

Attorney General

| align="right" {{party shading/Democratic}}|Weiser 76% - 21%

rowspan=2|2020

| President

| align="right" {{party shading/Democratic}}|Biden 80% - 18%

Senate

| align="right" {{party shading/Democratic}}|Hickenlooper 78% - 20%

rowspan=5|2022

| Senate

| align="right" {{party shading/Democratic}}|Bennet 80% - 18%

Governor

| align="right" {{party shading/Democratic}}|Polis 82% - 16%

Attorney General

| align="right" {{party shading/Democratic}}|Weiser 79% - 19%

Secretary of State

| align="right" {{party shading/Democratic}}|Griswold 78% - 19%

Treasurer

| align="right" {{party shading/Democratic}}|Young 77% - 20%

|2024

| President

| align="right" {{party shading/Democratic}}|Harris 77% - 21%

List of members representing the district

class="wikitable" style="text-align:center"

valign="bottom"

! Member

! Party

! Years

! Cong
ress(es)

! Electoral history

! width=350 | District location

style="height:3em"

| colspan=6 | District created March 4, 1893

style="height:3em"

| align="left" | 100px
Lafayette Pence
{{Small|(Denver)}}

| {{Party shading/Populist}} | Populist

| nowrap="" | March 4, 1893 –
March 3, 1895

| {{USCongressOrdinal|53}}

| Elected in 1892.
Lost re-election.

| rowspan=7 | 1893–1915
Adams, Arapahoe, Boulder, Denver, Jackson, Jefferson, Lake, Larimer, Logan, Morgan, Park, Phillips, Sedgwick, Washington, Weld, and Yuma

style="height:3em"

| rowspan="3" align="left" | 100px
John F. Shafroth
{{Small|(Denver)}}

| {{Party shading/Republican}} | Republican

| nowrap="" | March 4, 1895 –
March 3, 1897

| rowspan="3" | {{USCongressOrdinal|54|58}}

| rowspan="3" | Elected in 1894.
Changed parties and re-elected in 1896.
Re-elected in 1898.
Re-elected in 1900.
Changed parties and re-elected in 1902.
Resigned amid election contest.

style="height:3em"

| {{Party shading/Silver Republican}} | Silver Republican

| nowrap="" | March 4, 1897 –
March 3, 1903

style="height:3em"

| {{Party shading/Democratic}} | Democratic

| nowrap="" | March 4, 1903 –
February 15, 1904

style="height:3em"

| align="left" | 100px
Robert W. Bonynge
{{Small|(Denver)}}

| {{Party shading/Republican}} | Republican

| nowrap="" | February 16, 1904 –
March 3, 1909

| {{USCongressOrdinal|58|60}}

| Won election contest.
Re-elected in 1904.
Re-elected in 1906.
Lost re-election.

style="height:3em"

| align="left" | 100px
Atterson W. Rucker
{{Small|(Fort Logan)}}

| {{Party shading/Democratic}} | Democratic

| nowrap="" | March 4, 1909 –
March 3, 1913

| {{USCongressOrdinal|61|62}}

| Elected in 1908.
Re-elected in 1910.
Lost renomination.

style="height:3em"

| align="left" | 100px
George Kindel
{{Small|(Denver)}}

| {{Party shading/Democratic}} | Democratic

| nowrap="" | March 4, 1913 –
March 3, 1915

| {{USCongressOrdinal|63}}

| Elected in 1912.
Retired to run for U.S. senator.

style="height:3em"

| align="left" | 100px
Benjamin Hilliard
{{Small|(Denver)}}

| {{Party shading/Democratic}} | Democratic

| nowrap="" | March 4, 1915 –
March 3, 1919

| {{USCongressOrdinal|64|65}}

| Elected in 1914.
Re-elected in 1916.
Lost re-election.

| rowspan=2 | 1915–1923
{{dm|date=November 2022}}

style="height:3em"

| rowspan=2 align="left" | 100px
William Vaile
{{Small|(Denver)}}

| rowspan=2 {{Party shading/Republican}} | Republican

| rowspan=2 nowrap="" | March 4, 1919 –
July 2, 1927

| rowspan=2 | {{USCongressOrdinal|66|70}}

| rowspan=2 | Elected in 1918.
Re-elected in 1920.
Re-elected in 1922.
Re-elected in 1924.
Re-elected in 1926.
Died.

style="height:3em"

| rowspan=9 | 1923–1965
{{dm|date=November 2022}}

style="height:3em"

| colspan="2" | Vacant

| nowrap="" | July 2, 1927 –
November 15, 1927

| rowspan=2 | {{USCongressOrdinal|70}}

style="height:3em"

| align="left" | 100px
S. Harrison White
{{Small|(Denver)}}

| {{Party shading/Democratic}} | Democratic

| nowrap="" | November 15, 1927 –
March 3, 1929

| Elected to finish Vaile's term.
Lost re-election.

style="height:3em"

| align="left" | 100px
William R. Eaton
{{Small|(Denver)}}

| {{Party shading/Republican}} | Republican

| nowrap="" | March 4, 1929 –
March 3, 1933

| {{USCongressOrdinal|71|72}}

| Elected in 1928.
Re-elected in 1930.
Lost re-election.

style="height:3em"

| align="left" | 100px
Lawrence Lewis
{{Small|(Denver)}}

| {{Party shading/Democratic}} | Democratic

| nowrap="" | March 4, 1933 –
December 9, 1943

| {{USCongressOrdinal|73|78}}

| Elected in 1932.
Re-elected in 1934.
Re-elected in 1936.
Re-elected in 1938.
Re-elected in 1940.
Re-elected in 1942.
Died.

style="height:3em"

| colspan="2" | Vacant

| nowrap="" | December 9, 1943 –
March 7, 1944

| {{USCongressOrdinal|78}}

style="height:3em"

| align="left" |100px
Dean M. Gillespie
{{Small|(Denver)}}

| {{Party shading/Republican}} | Republican

| nowrap="" | March 7, 1944 –
January 3, 1947

| {{USCongressOrdinal|78|79}}

| Elected to finish Lewis's term.
Re-elected later in 1944.
Lost re-election.

style="height:3em"

| align="left" | 100px
John A. Carroll
{{Small|(Denver)}}

| {{Party shading/Democratic}} | Democratic

| nowrap="" | January 3, 1947 –
January 3, 1951

| {{USCongressOrdinal|80|81}}

| Elected in 1946.
Re-elected in 1948.
Retired to run for U.S. senator.

style="height:3em"

| rowspan=2 align="left" | 100px
Byron Rogers
{{Small|(Denver)}}

| rowspan=2 {{Party shading/Democratic}} | Democratic

| rowspan=2 nowrap="" | January 3, 1951 –
January 3, 1971

| rowspan=2 | {{USCongressOrdinal|82|91}}

| rowspan=2 | Elected in 1950.
Re-elected in 1952.
Re-elected in 1954.
Re-elected in 1956.
Re-elected in 1958.
Re-elected in 1960.
Re-elected in 1962.
Re-elected in 1964.
Re-elected in 1966.
Re-elected in 1968.
Lost renomination.

style="height:3em"

| rowspan=2 | 1965–1973
{{dm|date=November 2022}}

style="height:3em"

| align="left" | 100px
Mike McKevitt
{{Small|(Denver)}}

| {{Party shading/Republican}} | Republican

| nowrap="" | January 3, 1971 –
January 3, 1973

| {{USCongressOrdinal|92}}

| Elected in 1970.
Lost re-election.

style="height:3em"

| rowspan=3 align="left" | 100px
Pat Schroeder
{{Small|(Denver)}}

| rowspan=3 {{Party shading/Democratic}} | Democratic

| rowspan=3 nowrap="" | January 3, 1973 –
January 3, 1997

| rowspan=3 | {{USCongressOrdinal|93|104}}

| rowspan=3 | Elected in 1972.
Re-elected in 1974.
Re-elected in 1976.
Re-elected in 1978.
Re-elected in 1980.
Re-elected in 1982.
Re-elected in 1984.
Re-elected in 1986.
Re-elected in 1988.
Re-elected in 1990.
Re-elected in 1992.
Re-elected in 1994.
Retired.

| 1973–1983
Parts of Arapahoe and Denver

style="height:3em"

| 1983–1993
Parts of Arapahoe and Denver

style="height:3em"

| rowspan=2 | 1993–2003
Denver; parts of Adams and Arapahoe

style="height:3em"

| rowspan=4 align="left" | 100px
Diana DeGette
{{Small|(Denver)}}

| rowspan=4 {{Party shading/Democratic}} | Democratic

| rowspan=4 nowrap="" | January 3, 1997 –
present

| rowspan=4 | {{USCongressOrdinal|105|Present}}

| rowspan=4 | Elected in 1996.
Re-elected in 1998.
Re-elected in 2000.
Re-elected in 2002.
Re-elected in 2004.
Re-elected in 2006.
Re-elected in 2008.
Re-elected in 2010.
Re-elected in 2012.
Re-elected in 2014.
Re-elected in 2016.
Re-elected in 2018.
Re-elected in 2020.
Re-elected in 2022.
Re-elected in 2024.

style="height:3em"

| 2003–2013
200px
Denver; parts of Arapahoe

style="height:3em"

| 2013–2023
300px
Denver; parts of Arapahoe and Jefferson

style="height:3em"

| 2023–present
300px
Denver; parts of Arapahoe (enclaves only)

Election results

= 1892 =

{{Election box begin no change|title=1892 United States House of Representatives elections, Colorado's 1st district}}

{{Election box winning candidate with party link no change||party=People's Party (United States)|candidate=Lafayette Pence|votes=20,004|percentage=49.11%}}

{{Election box candidate with party link no change||party=Republican Party (United States)|candidate=Earl B. Coe|votes=17,609|percentage=43.23%}}

{{Election box candidate with party link no change||party=Democratic Party (US)|candidate=John G. Taylor|votes=2,240|percentage=5.50%}}

{{Election box candidate with party link no change|party=Prohibition Party|candidate=W.G. Sprague|votes=876|percentage=2.15%}}{{Election box majority no change||votes=2,395|percentage=5.88%|change=}}

{{Election box gain with party link without swing||winner=People's Party (United States)|loser=new seat}}

= 1894 =

{{Election box begin no change|title=1894 United States House of Representatives elections, Colorado's 1st district}}

{{Election box winning candidate with party link no change||party=Republican Party (United States)|candidate=John F. Shafroth|votes=47,710|percentage=55.32%}}

{{Election box candidate with party link no change||party=People's Party (United States)|candidate=Lafayette Pence (incumbent)|votes=34,223|percentage=39.68%}}

{{Election box candidate with party link no change||party=Prohibition Party|candidate=Robert H. Rhodes|votes=2,465|percentage=2.86%}}

{{Election box candidate with party link no change|party=Democratic Party (US)|candidate=John T. Bottom|votes=1,847|percentage=2.14%}}{{Election box majority no change||votes=13,487|percentage=15.64%|change=}}

{{Election box gain with party link without swing||winner=Republican Party (United States)|loser=People's Party (United States)}}

= 1896 =

{{Election box begin no change | title=1896 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Silver Republican Party

| candidate = John F. Shafroth (incumbent)

| votes = 67,821

| percentage = 84.89%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = T.E. McClelland

| votes = 9,625

| percentage = 12.05%

| change =

}}

{{Election box candidate minor party no change|color=#fcf75d|party=Natural Prohibition|candidate=J.J. Losh|votes=1,083|percentage=1.36%}}{{Election box candidate with party link no change|party=Prohibition Party|candidate=W.T. Steele|votes=1,006|percentage=1.26%}}{{Election box candidate with party link no change|party=National Party (United States)|candidate=Dayton O. Gilbert|votes=181|percentage=0.23%}}{{Election box candidate with party link no change|party=Socialist Labor Party of America|candidate=William Dye|votes=173|percentage=0.22%}}{{Election box majority no change

| votes = 58,196

| percentage = 72.84%

| change =

}}

{{Election box total no change

| votes = 79,889

| percentage = 100%

| change =

}}

{{Election box hold no swing|winner=Silver Republican|colour=#f2ced4}}

= 1898 =

{{Election box begin no change | title=1898 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Silver Republican Party

| candidate = John F. Shafroth (incumbent)

| votes = 43,111

| percentage = 67.61%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Charles Hartsell

| votes = 18,580

| percentage = 29.14%

| change =

}}

{{Election box candidate with party link no change|party=Prohibition Party|candidate=Dayton O. Gilbert|votes=1,410|percentage=2.21%}}{{Election box candidate with party link no change|party=Socialist Labor Party of America|candidate=Nathan L. Griest|votes=667|percentage=1.05%}}{{Election box majority no change

| votes = 24,531

| percentage = 38.47%

| change =

}}

{{Election box total no change

| votes = 63,768

| percentage = 100%

| change =

}}

{{Election box hold no swing|winner=Silver Republican|colour=#f2ced4}}

= 1900 =

{{Election box begin no change | title=1900 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Silver Republican Party

| candidate = John F. Shafroth (incumbent)

| votes = 54,591

| percentage = 55.32%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Robert W. Bonynge

| votes = 41,518

| percentage = 42.07%

| change =

}}

{{Election box candidate with party link no change|party=Prohibition Party|candidate=S.H. Shellenger|votes=1,924|percentage=1.95%}}{{Election box candidate with party link no change|party=Socialist Labor Party of America|candidate=Joseph Smith|votes=326|percentage=0.33%}}{{Election box candidate with party link no change|party=Social Democratic Party of America|candidate=Charles M. Davis|votes=320|percentage=0.32%}}{{Election box majority no change

| votes = 13,073

| percentage = 13.25%

| change =

}}

{{Election box total no change

| votes = 98,679

| percentage = 100%

| change =

}}

{{Election box hold no swing|winner=Silver Republican|colour=#f2ced4}}

= 1902 =

{{Election box begin no change | title=1902 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = John F. Shafroth (incumbent)

| votes = 41,440

| percentage = 48.98%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Robert W. Bonynge

| votes = 38,648

| percentage = 45.68%

| change =

}}

{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Marshall DeWitt|votes=2,680|percentage=3.17%}}{{Election box candidate with party link no change|party=Prohibition Party|candidate=Franklin Moore|votes=1,832|percentage=2.17%}}{{Election box majority no change

| votes = 2,792

| percentage = 3.30%

| change =

}}

{{Election box total no change

| votes = 84,600

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1904 =

{{Election box begin no change | title=1904 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Republican Party (US)

| candidate = Robert W. Bonynge (incumbent)

| votes = 55,940

| percentage = 51.74%

| change =

}}

{{Election box candidate with party link no change

| party = Democratic Party (US)

| candidate = Clay B. Whitford

| votes = 50,022

| percentage = 46.27%

| change =

}}

{{Election box candidate with party link no change|party=Prohibition Party|candidate=William C. Johnston|votes=2,153|percentage=1.99%}}{{Election box majority no change

| votes = 5,918

| percentage = 5.47%

| change =

}}

{{Election box total no change

| votes = 108,115

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Republican Party (US)

| swing =

}}

= 1906 =

{{Election box begin no change | title=1906 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Republican Party (US)

| candidate = Robert W. Bonynge (incumbent)

| votes = 47,549

| percentage = 55.48%

| change =

}}

{{Election box candidate with party link no change

| party = Democratic Party (US)

| candidate = Charles F. Tew

| votes = 31,133

| percentage = 36.32%

| change =

}}

{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Luella Twining|votes=4,989|percentage=5.82%}}{{Election box candidate with party link no change|party=Prohibition Party|candidate=E.E. Evans|votes=2,039|percentage=2.38%}}{{Election box majority no change

| votes = 16,416

| percentage = 19.16%

| change =

}}

{{Election box total no change

| votes = 85,710

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Republican Party (US)

| swing =

}}

= 1908 =

{{Election box begin no change|title=1908 United States House of Representatives elections, Colorado's 1st district}}

{{Election box winning candidate with party link no change||party=Democratic Party (United States)|candidate=Atterson W. Rucker|votes=60,643|percentage=49.87%}}

{{Election box candidate with party link no change||party=Republican Party (United States)|candidate=Robert W. Bonynge (incumbent)|votes=57,597|percentage=47.37%}}

{{Election box candidate with party link no change||party=Socialist Party of America|candidate=S.S. Greear|votes=3,356|percentage=2.76%}}

{{Election box majority no change||votes=3,046|percentage=2.50%|change=}}

{{Election box gain with party link without swing||winner=Democratic Party (United States)|loser=Republican Party (United States)}}

= 1910 =

{{Election box begin no change | title=1910 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Atterson W. Rucker (incumbent)

| votes = 40,458

| percentage = 40.77%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = James C. Burger

| votes = 37,966

| percentage = 38.26%

| change =

}}

{{Election box candidate with party link no change|party=Prohibition Party|candidate=George John Kindel|votes=17,144|percentage=17.28%}}{{Election box candidate with party link no change|party=Socialist Party of America|candidate=John W. Martin|votes=3,661|percentage=3.69%}}{{Election box majority no change

| votes = 2,492

| percentage = 2.51%

| change =

}}

{{Election box total no change

| votes = 99,229

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1912 =

{{Election box begin no change | title=1912 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = George John Kindel

| votes = 54,504

| percentage = 45.84%

| change =

}}

{{Election box candidate with party link no change

| party = Progressive Party (United States, 1912)

| candidate = W. J. Crank

| votes = 30,121

| percentage = 25.33%

| change =

}}

{{Election box candidate with party link no change|party=Republican Party (US)|candidate=Rice W. Means|votes=24,887|percentage=20.93%}}{{Election box candidate with party link no change|party=Socialist Party of America|candidate=John W. Martin|votes=6,757|percentage=5.68%}}{{Election box candidate with party link no change|party=Prohibition Party|candidate=Otto A. Reinhardt|votes=2,642|percentage=2.22%}}{{Election box majority no change

| votes = 24,383

| percentage = 20.51%

| change =

}}

{{Election box total no change

| votes = 118,911

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1914 =

{{Election box begin no change | title=1914 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Benjamin C. Hilliard

| votes = 26,169

| percentage = 40.56%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Horace F. Phelps

| votes = 21,569

| percentage = 33.43%

| change =

}}

{{Election box candidate with party link no change|party=Progressive Party (United States, 1912)|candidate=Archibald A. Lee|votes=8,729|percentage=13.53%}}{{Election box candidate with party link no change|party=Independent politician|candidate=Atterson W. Rucker|votes=5,445|percentage=8.44%}}{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Benjamin Blumenberg|votes=2,612|percentage=4.05%}}{{Election box majority no change

| votes = 4,600

| percentage = 7.13%

| change =

}}

{{Election box total no change

| votes = 64,524

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1916 =

{{Election box begin no change | title=1916 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Benjamin C. Hilliard (incumbent)

| votes = 30,146

| percentage = 48.53%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = William N. Vaile

| votes = 26,121

| percentage = 42.05%

| change =

}}

{{Election box candidate minor party no change|color=#ffff9a|party=Liberal|candidate=George John Kindel|votes=3,306|percentage=5.32%}}{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Charles A. Ahlstrom|votes=2,551|percentage=4.11%}}{{Election box majority no change

| votes = 4,025

| percentage = 6.48%

| change =

}}

{{Election box total no change

| votes = 62,124

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1918 =

{{Election box begin no change|title=1918 United States House of Representatives elections, Colorado's 1st district}}

{{Election box winning candidate with party link no change||party=Republican Party (United States)|candidate=William N. Vaile|votes=27,815|percentage=54.19%}}

{{Election box candidate with party link no change||party=Democratic Party (United States)|candidate=John L. Stack|votes=16,364|percentage=31.88%}}

{{Election box candidate with party link no change||party=Independent politician|candidate=Benjamin C. Hilliard (incumbent)|votes=6,112|percentage=11.91%}}

{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Fred Underhill|votes=1,039|percentage=2.02%}}{{Election box majority no change||votes=11,451|percentage=22.31%|change=}}

{{Election box gain with party link without swing||winner=Republican Party (United States)|loser=Democratic Party (United States)}}

= 1920 =

{{Election box begin no change | title=1920 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Republican Party (US)

| candidate = William N. Vaile (incumbent)

| votes = 45,658

| percentage = 66.93%

| change =

}}

{{Election box candidate with party link no change

| party = Democratic Party (US)

| candidate = Benjamin C. Hilliard

| votes = 22,557

| percentage = 33.07%

| change =

}}

{{Election box majority no change

| votes = 23,101

| percentage = 33.86%

| change =

}}

{{Election box total no change

| votes = 68,215

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Republican Party (US)

| swing =

}}

= 1922 =

{{Election box begin no change | title=1922 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Republican Party (US)

| candidate = William N. Vaile (incumbent)

| votes = 32,939

| percentage = 55.48%

| change =

}}

{{Election box candidate with party link no change

| party = Democratic Party (US)

| candidate = Benjamin C. Hilliard

| votes = 25,477

| percentage = 42.91%

| change =

}}

{{Election box candidate with party link no change|party=Farmer–Labor Party|candidate=Hattie K. Howard|votes=959|percentage=1.62%}}{{Election box majority no change

| votes = 7,462

| percentage = 12.57%

| change =

}}

{{Election box total no change

| votes = 59,375

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Republican Party (US)

| swing =

}}

= 1924 =

{{Election box begin no change | title=1924 United States House of Representatives elections, Colorado's 1st district

}}

{{Election box winning candidate with party link no change

| party = Republican Party (US)

| candidate = William N. Vaile (incumbent)

| votes = 47,155

| percentage = 54.19%

| change =

}}

{{Election box candidate with party link no change

| party = Democratic Party (US)

| candidate = James G. Edgeworth

| votes = 36,519

| percentage = 41.97%

| change =

}}

{{Election box candidate with party link no change|party=Farmer–Labor Party|candidate=Thomas O. Spacey|votes=2,686|percentage=3.09%}}{{Election box candidate with party link no change|party=Workers Party of America|candidate=Louis A. Zetlin|votes=654|percentage=0.75%}}{{Election box majority no change

| votes = 10,636

| percentage = 12.22%

| change =

}}

{{Election box total no change

| votes = 87,014

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Republican Party (US)

| swing =

}}

= 1926 =

{{Election box begin no change | title=1926 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=|others=Compiled from official sources by William Tyler Page|title=Statistics of the Congressional Election of November 2, 1926|url=https://clerk.house.gov/member_info/electionInfo/1926election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011727/http://clerk.house.gov/member_info/electionInfo/1926election.pdf |archive-date=January 5, 2007 |access-date=January 28, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Republican Party (US)

| candidate = William N. Vaile (incumbent)

| votes = 39,909

| percentage = 54.86%

| change =

}}

{{Election box candidate with party link no change

| party = Democratic Party (US)

| candidate = Benjamin C. Hilliard

| votes = 30,337

| percentage = 41.70%

| change =

}}

{{Election box candidate with party link no change|party=Farmer–Labor Party|candidate=Isaac Dunn|votes=1,972|percentage=2.71%}}{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Clyde Robinson|votes=530|percentage=0.73%}}{{Election box majority no change

| votes = 9,572

| percentage = 13.16%

| change =

}}

{{Election box total no change

| votes = 72,748

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Republican Party (US)

| swing =

}}

= 1927 (special) =

{{Election box begin no change|title=1927 United States House of Representatives special election, Colorado's 1st district}}

{{Election box winning candidate with party link no change||party=Democratic Party (United States)|candidate=S. Harrison White|votes=32,171|percentage=51.52%}}

{{Election box candidate with party link no change||party=Republican Party (United States)|candidate=Francis J. Knauss|votes=27,456|percentage=43.97%}}

{{Election box candidate with party link no change||party=Independent politician|candidate=George John Kindel|votes=2,556|percentage=4.09%}}

{{Election box candidate with party link no change|party=Farmer–Labor Party|candidate=Huston Hugh Marrs|votes=261|percentage=0.42%}}{{Election box majority no change||votes=4,715|percentage=7.55%|change=}}

{{Election box gain with party link without swing||winner=Democratic Party (United States)|loser=Republican Party (United States)}}

= 1928 =

{{Election box begin no change|title=1928 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=March 25, 1929|others=Compiled from official sources by William Tyler Page|title=Statistics of the Congressional and Presidential Election of November 6, 1928|url=https://clerk.house.gov/member_info/electionInfo/1928election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011146/http://clerk.house.gov/member_info/electionInfo/1928election.pdf |archive-date=January 5, 2007 |access-date=January 28, 2021|website=Office of the Clerk, U.S. House of Representatives}}}}

{{Election box winning candidate with party link no change||party=Republican Party (United States)|candidate=William R. Eaton|votes=63,258|percentage=58.08%}}

{{Election box candidate with party link no change||party=Democratic Party (United States)|candidate=S. Harrison White (incumbent)|votes=44,713|percentage=41.05%}}

{{Election box candidate with party link no change||party=Workers Party of America|candidate=William R. Dietrich|votes=949|percentage=0.87%}}

{{Election box majority no change||votes=18,545|percentage=17.03%|change=}}

{{Election box gain with party link without swing||winner=Republican Party (United States)|loser=Democratic Party (United States)}}

= 1930 =

{{Election box begin no change | title=1930 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=January 8, 1931|others=Compiled from official sources by William Tyler Page|title=Statistics of the Congressional Election of November 4, 1930|url=https://clerk.house.gov/member_info/electionInfo/1930election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011818/http://clerk.house.gov/member_info/electionInfo/1930election.pdf |archive-date=January 5, 2007 |access-date=January 28, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Republican Party (US)

| candidate = William R. Eaton (incumbent)

| votes = 39,907

| percentage = 50.33%

| change =

}}

{{Election box candidate with party link no change

| party = Democratic Party (US)

| candidate = Lawrence Lewis

| votes = 38,152

| percentage = 48.12%

| change =

}}

{{Election box candidate with party link no change|party=Farmer–Labor Party|candidate=W.R. Duke|votes=813|percentage=1.03%}}{{Election box candidate with party link no change|party=Communist Party USA|candidate=Louis A. Zeitlin|votes=411|percentage=0.52%}}{{Election box majority no change

| votes = 1,755

| percentage = 2.21%

| change =

}}

{{Election box total no change

| votes = 79,283

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Republican Party (US)

| swing =

}}

= 1932 =

{{Election box begin no change|title=1932 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=February 3, 1933|others=Compiled from official sources by George D. Ellis under direction of South Trimble|title=Statistics of the Congressional and Presidential Election of November 8, 1932|url=https://clerk.house.gov/member_info/electionInfo/1932election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011055/http://clerk.house.gov/member_info/electionInfo/1932election.pdf |archive-date=January 5, 2007 |access-date=January 27, 2021|website=Office of the Clerk, U.S. House of Representatives}}}}

{{Election box winning candidate with party link no change||party=Democratic Party (United States)|candidate=Lawrence Lewis|votes=70,826|percentage=54.41%}}

{{Election box candidate with party link no change||party=Republican Party (United States)|candidate=William R. Eaton (incumbent)|votes=56,601|percentage=43.49%}}

{{Election box candidate with party link no change||party=Socialist Party of America|candidate=Bruce Lamont|votes=1,926|percentage=1.48%}}

{{Election box candidate with party link no change|party=Communist Party USA|candidate=Charles Guynn|votes=422|percentage=0.32%}}{{Election box candidate with party link no change|party=Farmer–Labor Party|candidate=W. R. Duke|votes=385|percentage=0.30%}}{{Election box majority no change||votes=14,225|percentage=10.92%|change=}}

{{Election box gain with party link without swing||winner=Democratic Party (United States)|loser=Republican Party (United States)}}

= 1934 =

{{Election box begin no change | title=1934 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=April 11, 1935|others=Compiled from official sources by Leroy D. Brandon under direction of South Trimble|title=Statistics of the Congressional Election of November 6, 1934|url=https://clerk.house.gov/member_info/electionInfo/1934election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011827/http://clerk.house.gov/member_info/electionInfo/1934election.pdf |archive-date=January 5, 2007 |access-date=January 27, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Lawrence Lewis (incumbent)

| votes = 59,744

| percentage = 56.04%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = William R. Eaton

| votes = 34,073

| percentage = 31.96%

| change =

}}

{{Election box candidate minor party no change|color=#ca7bb4|party=Old Age Pension|candidate=Charles W. Varnum|votes=9,511|percentage=8.92%}}{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Carle Whitehead|votes=2,540|percentage=2.38%}}{{Election box candidate with party link no change|party=Communist Party USA|candidate=George Bardwell|votes=743|percentage=0.70%}}{{Election box majority no change

| votes = 25,671

| percentage = 24.08%

| change =

}}

{{Election box total no change

| votes = 106,611

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1936 =

{{Election box begin no change | title=1936 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=December 18, 1936|others=Compiled from official sources by Leroy D. Brandon under direction of South Trimble|title=Statistics of the Congressional Election of November 3, 1936|url=https://clerk.house.gov/member_info/electionInfo/1936election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011502/http://clerk.house.gov/member_info/electionInfo/1936election.pdf |archive-date=January 5, 2007 |access-date=January 26, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Lawrence Lewis (incumbent)

| votes = 100,704

| percentage = 68.96%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Harry Zimmerhackel

| votes = 41,574

| percentage = 28.47%

| change =

}}

{{Election box candidate with party link no change|party=Farmer–Labor Party|candidate=Louella Grant Shirley|votes=2,675|percentage=1.83%}}{{Election box candidate with party link no change|party=Socialist Party of America|candidate=F. S. Kidneigh|votes=1,073|percentage=0.73%}}{{Election box majority no change

| votes = 59,130

| percentage = 40.49%

| change =

}}

{{Election box total no change

| votes = 146,026

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1938 =

{{Election box begin no change | title=1938 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=July 29, 1940|others=Compiled from official sources by Leroy D. Brandon under direction of South Trimble|title=Statistics of the Congressional Election of November 8, 1938|url=https://clerk.house.gov/member_info/electionInfo/1938election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011513/http://clerk.house.gov/member_info/electionInfo/1938election.pdf |archive-date=January 5, 2007 |access-date=January 26, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Lawrence Lewis (incumbent)

| votes = 83,517

| percentage = 65.31%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = William I. Reilly

| votes = 42,758

| percentage = 33.44%

| change =

}}

{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Edgar P. Sherman|votes=913|percentage=0.71%}}{{Election box candidate with party link no change|party=Prohibition Party|candidate=Oliver L. Barnes|votes=688|percentage=0.54%}}{{Election box majority no change

| votes = 40,759

| percentage = 31.87%

| change =

}}

{{Election box total no change

| votes = 127,876

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1940 =

{{Election box begin no change | title=1940 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=January 15, 1941|others=Compiled from official sources by Leroy D. Brandon under direction of South Trimble|title=Statistics of the Presidential and Congressional Election of November 5, 1940|url=https://clerk.house.gov/member_info/electionInfo/1940election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011737/http://clerk.house.gov/member_info/electionInfo/1940election.pdf |archive-date=January 5, 2007 |access-date=January 26, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Lawrence Lewis (incumbent)

| votes = 110,078

| percentage = 64.72%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = James D. Parriott

| votes = 59,427

| percentage = 34.94%

| change =

}}

{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Ward Rogers|votes=577|percentage=0.34%}}{{Election box majority no change

| votes = 50,651

| percentage = 29.78%

| change =

}}

{{Election box total no change

| votes = 170,082

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1942 =

{{Election box begin no change | title=1942 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=January 30, 1943|others=Compiled from official sources by William Graf under direction of South Trimble|title=Statistics of the Congressional Election of November 3, 1942|url=https://clerk.house.gov/member_info/electionInfo/1942election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011404/http://clerk.house.gov/member_info/electionInfo/1942election.pdf |archive-date=January 5, 2007 |access-date=January 25, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Lawrence Lewis (incumbent)

| votes = 58,143

| percentage = 53.39%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Olaf H. Jacobson

| votes = 50,083

| percentage = 45.99%

| change =

}}

{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Ward Rogers|votes=681|percentage=0.63%}}{{Election box majority no change

| votes = 8,060

| percentage = 7.40%

| change =

}}

{{Election box total no change

| votes = 108,907

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1944 (special) =

{{Election box begin no change|title=1944 United States House of Representatives special election, Colorado's 1st district{{Cite web|last=|first=|date=|title=CO - District 01 - History|url=https://www.ourcampaigns.com/ContainerHistory.html?ContainerID=378|url-status=live|archive-url=https://web.archive.org/web/20180715064401/https://www.ourcampaigns.com/ContainerHistory.html?ContainerID=378 |archive-date=July 15, 2018 |access-date=January 25, 2021|website=Our Campaigns}}}}

{{Election box winning candidate with party link no change||party=Republican Party (United States)|candidate=Dean M. Gillespie|votes=41,319|percentage=51.55%}}

{{Election box candidate with party link no change||party=Democratic Party (United States)|candidate=Carl E. Wuertele|votes=38,394|percentage=47.90%}}

{{Election box candidate with party link no change||party=Socialist Party of America|candidate=Edgar P. Sherman|votes=230|percentage=0.29%}}

{{Election box candidate with party link no change|party=Independent politician|candidate=George M. Phillips|votes=160|percentage=0.20%}}{{Election box candidate minor party no change|color=#ffff9a|party=Liberal|candidate=Frank H. Rice|votes=51|percentage=0.06%}}{{Election box majority no change||votes=2,925|percentage=3.65%|change=}}

{{Election box gain with party link without swing||winner=Republican Party (United States)|loser=Democratic Party (United States)}}

= 1944 (general) =

{{Election box begin no change | title=1944 United States House of Representatives elections, Colorado's 1st district (general){{Cite web|date=March 1, 1945|others=Compiled from official sources by William Graf under direction of South Trimble|title=Statistics of the Presidential and Congressional Election of November 7, 1944|url=https://clerk.house.gov/member_info/electionInfo/1944election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105010933/http://clerk.house.gov/member_info/electionInfo/1944election.pdf |archive-date=January 5, 2007 |access-date=January 25, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Republican Party (US)

| candidate = Dean M. Gillespie (incumbent)

| votes = 90,151

| percentage = 51.75%

| change =

}}

{{Election box candidate with party link no change

| party = Democratic Party (US)

| candidate = Charles A. Graham

| votes = 83,253

| percentage = 47.79%

| change =

}}

{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Edgar P. Sherman|votes=798|percentage=0.46%}}

{{Election box majority no change

| votes = 6,898

| percentage = 3.96%

| change =

}}

{{Election box total no change

| votes = 174,202

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Republican Party (US)

| swing =

}}

= 1946 =

{{Election box begin no change|title=1946 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=February 1, 1947|others=Compiled from official sources by William Graf under direction of John Andrews|title=Statistics of the Congressional Election of November 5, 1946|url=https://clerk.house.gov/member_info/electionInfo/1946election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011859/http://clerk.house.gov/member_info/electionInfo/1946election.pdf |archive-date=January 5, 2007 |access-date=January 25, 2021|website=Office of the Clerk, U.S. House of Representatives}}}}

{{Election box winning candidate with party link no change||party=Democratic Party (United States)|candidate=John A. Carroll|votes=60,513|percentage=51.75%}}

{{Election box candidate with party link no change||party=Republican Party (United States)|candidate=Dean M. Gillespie (incumbent)|votes=55,724|percentage=47.66%}}

{{Election box candidate with party link no change||party=Socialist Party of America|candidate=Edgar P. Sherman|votes=691|percentage=0.59%}}

{{Election box majority no change||votes=4,789|percentage=4.09%|change=}}

{{Election box gain with party link without swing||winner=Democratic Party (United States)|loser=Republican Party (United States)}}

= 1948 =

{{Election box begin no change | title=1948 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=March 1, 1949|others=Compiled from official sources by William Graf under direction of Ralph R. Roberts|title=Statistics of the Presidential and Congressional Election of November 2, 1948|url=https://clerk.house.gov/member_info/electionInfo/1948election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105010946/http://clerk.house.gov/member_info/electionInfo/1948election.pdf |archive-date=January 5, 2007 |access-date=January 25, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = John A. Carroll (incumbent)

| votes = 106,096

| percentage = 64.84%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Christopher F. Cusack

| votes = 57,541

| percentage = 35.16%

| change =

}}

{{Election box majority no change

| votes = 48,555

| percentage = 29.68%

| change =

}}

{{Election box total no change

| votes = 163,637

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1950 =

{{Election box begin no change | title=1950 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=January 11, 1951|others=Compiled from official sources by William Graf under direction of Ralph R. Roberts|title=Statistics of the Congressional Election of November 7, 1950|url=https://clerk.house.gov/member_info/electionInfo/1950election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011703/http://clerk.house.gov/member_info/electionInfo/1950election.pdf |archive-date=January 5, 2007 |access-date=January 25, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Byron G. Rogers

| votes = 70,165

| percentage = 50.31%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Richard G. Luxford

| votes = 67,436

| percentage = 48.35%

| change =

}}

{{Election box candidate with party link no change|party=Independent politician|candidate=Tillman H. Eeb|votes=1,287|percentage=0.92%}}

{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Carle Whitehead|votes=585|percentage=0.42%}}{{Election box majority no change

| votes = 2,729

| percentage = 1.96%

| change =

}}

{{Election box total no change

| votes = 139,473

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1952 =

{{Election box begin no change | title=1952 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=May 12, 1953|others=Compiled from official sources by Earl Rockwood under direction of Lyle O. Snader|title=Statistics of the Presidential and Congressional Election of November 4, 1952|url=https://clerk.house.gov/member_info/electionInfo/1952election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011636/http://clerk.house.gov/member_info/electionInfo/1952election.pdf |archive-date=January 5, 2007 |access-date=January 25, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Byron G. Rogers (incumbent)

| votes = 101,864

| percentage = 50.78%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Mason K. Knuckles

| votes = 97,442

| percentage = 48.57%

| change =

}}

{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Carle Whitehead|votes=1,307|percentage=0.65%}}

{{Election box majority no change

| votes = 4,422

| percentage = 2.21%

| change =

}}

{{Election box total no change

| votes = 200,613

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1954 =

{{Election box begin no change | title=1954 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=October 15, 1955|others=Compiled from official sources by Earl Rockwood under direction of Ralph R. Roberts|title=Statistics of the Congressional Election of November 2, 1954|url=https://clerk.house.gov/member_info/electionInfo/1954election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011019/http://clerk.house.gov/member_info/electionInfo/1954election.pdf |archive-date=January 5, 2007 |access-date=January 25, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Byron G. Rogers (incumbent)

| votes = 84,745

| percentage = 55.62%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Ellen G. Harris

| votes = 67,210

| percentage = 44.11%

| change =

}}

{{Election box candidate with party link no change|party=Socialist Party of America|candidate=Carle Whitehead|votes=415|percentage=0.27%}}

{{Election box majority no change

| votes = 17,535

| percentage = 11.51%

| change =

}}

{{Election box total no change

| votes = 152,370

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1956 =

{{Election box begin no change | title=1956 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=September 15, 1958|others=Compiled from official sources under direction of Ralph R. Roberts|title=Statistics of the Presidential and Congressional Election of November 6, 1956|url=https://clerk.house.gov/member_info/electionInfo/1956election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011714/http://clerk.house.gov/member_info/electionInfo/1956election.pdf |archive-date=January 5, 2007 |access-date=January 25, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Byron G. Rogers (incumbent)

| votes = 116,487

| percentage = 57.78%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Robert S. McCollum

| votes = 85,127

| percentage = 42.22%

| change =

}}

{{Election box majority no change

| votes = 31,360

| percentage = 15.56%

| change =

}}

{{Election box total no change

| votes = 201,614

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1958 =

{{Election box begin no change | title=1958 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=March 16, 1959|others=Compiled from official sources by Benjamin J. Guthrie, under direction of Ralph R. Roberts|title=Statistics of the Congressional Election of November 4, 1958|url=https://clerk.house.gov/member_info/electionInfo/1958election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011255/http://clerk.house.gov/member_info/electionInfo/1958election.pdf |archive-date=January 5, 2007 |access-date=January 25, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Byron G. Rogers (incumbent)

| votes = 107,567

| percentage = 66.66%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = John L. Harpel

| votes = 53,801

| percentage = 33.34%

| change =

}}

{{Election box majority no change

| votes = 53,766

| percentage = 33.32%

| change =

}}

{{Election box total no change

| votes = 161,368

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1960 =

{{Election box begin no change | title=1960 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=April 15, 1961|others=Compiled from official sources by Benjamin J. Guthrie, under direction of Ralph R. Roberts|title=Statistics of the Presidential and Congressional Election of November 8, 1960|url=https://clerk.house.gov/member_info/electionInfo/1960election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011650/http://clerk.house.gov/member_info/electionInfo/1960election.pdf |archive-date=January 5, 2007 |access-date=January 25, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Byron G. Rogers (incumbent)

| votes = 121,610

| percentage = 60.01%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Robert D. Rolander

| votes = 81,042

| percentage = 39.99%

| change =

}}

{{Election box majority no change

| votes = 40,568

| percentage = 20.02%

| change =

}}

{{Election box total no change

| votes = 202,652

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1962 =

{{Main|1962 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1962 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=March 16, 1963|others=Compiled from official sources by Benjamin J. Guthrie, under direction of Ralph R. Roberts|title=Statistics of the Congressional Election of November 6, 1962|url=https://clerk.house.gov/member_info/electionInfo/1962election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011543/http://clerk.house.gov/member_info/electionInfo/1962election.pdf |archive-date=January 5, 2007 |access-date=January 24, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Byron G. Rogers (incumbent)

| votes = 94,680

| percentage = 56.00%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = William B. Chenoweth

| votes = 74,392

| percentage = 44.00%

| change =

}}

{{Election box majority no change

| votes = 20,288

| percentage = 12.00%

| change =

}}

{{Election box total no change

| votes = 169,072

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1964 =

{{Main|1964 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1964 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=August 15, 1965|others=Compiled from official sources by Benjamin J. Guthrie, under direction of Ralph R. Roberts|title=Statistics of the Presidential and Congressional Election of November 3, 1964|url=https://clerk.house.gov/member_info/electionInfo/1964election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011043/http://clerk.house.gov/member_info/electionInfo/1964election.pdf |archive-date=January 5, 2007 |access-date=January 24, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Byron G. Rogers (incumbent)

| votes = 138,475

| percentage = 67.52%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Glenn R. Jones

| votes = 65,423

| percentage = 31.90%

| change =

}}

{{Election box candidate with party link no change

| party = Socialist Workers Party (United States)

| candidate = Allen D. Taplin

| votes = 1,183

| percentage = 0.58%

| change =

}}

{{Election box majority no change

| votes = 73,052

| percentage = 35.62%

| change =

}}

{{Election box total no change

| votes = 205,081

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1966 =

{{Main|1966 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1966 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=March 31, 1967|others=Compiled from official sources by Benjamin J. Guthrie, under direction of W. Pat Jennings|title=Statistics of the Congressional Election of November 8, 1966|url=https://clerk.house.gov/member_info/electionInfo/1966election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011155/http://clerk.house.gov/member_info/electionInfo/1966election.pdf |archive-date=January 5, 2007 |access-date=January 24, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Byron G. Rogers (incumbent)

| votes = 92,688

| percentage = 56.03%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Greg Perason

| votes = 72,732

| percentage = 43.97%

| change =

}}

{{Election box majority no change

| votes = 19,956

| percentage = 12.06%

| change =

}}

{{Election box total no change

| votes = 165,420

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1968 =

{{Main|1968 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1968 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=July 1, 1969|others=Compiled from official sources by Benjamin J. Guthrie, under direction of W. Pat Jennings|title=Statistics of the Presidential and Congressional Election of November 5, 1968|url=https://clerk.house.gov/member_info/electionInfo/1968election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011120/http://clerk.house.gov/member_info/electionInfo/1968election.pdf |archive-date=January 5, 2007 |access-date=January 24, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Byron G. Rogers (incumbent)

| votes = 91,199

| percentage = 45.74%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Frank A. Kemp, Jr.

| votes = 82,677

| percentage = 41.47%

| change =

}}

{{Election box candidate with party link no change

| party = American Independent Party

| candidate = Gordon G. Barnwall

| votes = 25,499

| percentage = 12.79%

| change =

}}

{{Election box majority no change

| votes = 8,522

| percentage = 4.27%

| change =

}}

{{Election box total no change

| votes = 199,375

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1970 =

{{Main|1970 United States House of Representatives elections in Colorado}}

{{Election box begin no change|title=1970 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=May 1, 1971|others=Compiled from official sources by Benjamin J. Guthrie, under direction of W. Pat Jennings|title=Statistics of the Congressional Election of November 3, 1970|url=https://clerk.house.gov/member_info/electionInfo/1970election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011352/http://clerk.house.gov/member_info/electionInfo/1970election.pdf |archive-date=January 5, 2007 |access-date=January 24, 2021|website=Office of the Clerk, U.S. House of Representatives}}}}

{{Election box winning candidate with party link no change||party=Republican Party (United States)|candidate=Mike McKevitt|votes=84,643|percentage=51.50%}}

{{Election box candidate with party link no change||party=Democratic Party (United States)|candidate=Craig S. Barnes|votes=74,444|percentage=45.30%}}

{{Election box candidate with party link no change||party=Raza Unida Party|candidate=Salvadore Carpio, Jr.|votes=5,257|percentage=3.20%}}

{{Election box majority no change||votes=10,199|percentage=6.20%|change=}}

{{Election box gain with party link without swing||winner=Republican Party (United States)|loser=Democratic Party (United States)}}

= 1972 =

{{Main|1972 United States House of Representatives elections in Colorado}}

{{Election box begin no change|title=1972 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=March 15, 1973|others=Compiled from official sources by Benjamin J. Guthrie, under direction of W. Pat Jennings|title=Statistics of the Presidential and Congressional Election of November 7, 1972|url=https://clerk.house.gov/member_info/electionInfo/1972election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011006/http://clerk.house.gov/member_info/electionInfo/1972election.pdf |archive-date=January 5, 2007 |access-date=January 24, 2021|website=Office of the Clerk, U.S. House of Representatives}}}}

{{Election box winning candidate with party link no change||party=Democratic Party (United States)|candidate=Pat Schroeder|votes=101,832|percentage=51.56%}}

{{Election box candidate with party link no change||party=Republican Party (United States)|candidate=Mike McKevitt (incumbent)|votes=93,733|percentage=47.46%}}

{{Election box candidate with party link no change||party=Raza Unida Party|candidate=Maria Pauline Serna|votes=1,629|percentage=0.82%}}

{{Election box candidate with party link no change||party=Socialist Workers Party (United States)|candidate=Fern Gapin|votes=301|percentage=0.15%}}

{{Election box majority no change||votes=8,099|percentage=4.10%|change=}}

{{Election box gain with party link without swing||winner=Democratic Party (United States)|loser=Republican Party (United States)}}

= 1974 =

{{Main|1974 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1974 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=August 1, 1975|others=Compiled from official sources by Benjamin J. Guthrie, under direction of W. Pat Jennings|title=Statistics of the Congressional Election of November 4, 1974|url=https://clerk.house.gov/member_info/electionInfo/1974election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011522/http://clerk.house.gov/member_info/electionInfo/1974election.pdf |archive-date=January 5, 2007 |access-date=January 24, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Pat Schroeder (incumbent)

| votes = 94,583

| percentage = 58.48%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Frank Southworth

| votes = 66,046

| percentage = 40.84%

| change =

}}

{{Election box candidate with party link no change

| party = American Party (1969)

| candidate = Elmer B. Sachs

| votes = 1,105

| percentage = 0.68%

| change =

}}

{{Election box majority no change

| votes = 27,637

| percentage = 17.64%

| change =

}}

{{Election box total no change

| votes = 161,734

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1976 =

{{Main|1976 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1976 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=April 15, 1977|others=Compiled from official sources by Benjamin J. Guthrie, under direction of Edmund L. Henshaw, Jr.|title=Statistics of the Presidential and Congressional Election of November 2, 1976|url=https://clerk.house.gov/member_info/electionInfo/1976election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011106/http://clerk.house.gov/member_info/electionInfo/1976election.pdf |archive-date=January 5, 2007 |access-date=January 24, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Pat Schroeder (incumbent)

| votes = 103,037

| percentage = 53.22%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Don Friedman

| votes = 89,384

| percentage = 46.17%

| change =

}}

{{Election box candidate with party link no change

| party = Socialist Workers Party (United States)

| candidate = Priscilla Schenk

| votes = 681

| percentage = 0.35%

| change =

}}

{{Election box candidate with party link no change

| party = U.S. Labor Party

| candidate = Lann Meyers

| votes = 508

| percentage = 0.26%

| change =

}}

{{Election box majority no change

| votes = 13,653

| percentage = 7.05%

| change =

}}

{{Election box total no change

| votes = 193,610

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1978 =

{{Main|1978 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1978 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=April 1, 1979|others=Compiled from official sources by Benjamin J. Guthrie, under direction of Edmund L. Henshaw, Jr.|title=Statistics of the Congressional Election of November 7, 1978|url=https://clerk.house.gov/member_info/electionInfo/1978election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011031/http://clerk.house.gov/member_info/electionInfo/1978election.pdf |archive-date=January 5, 2007 |access-date=January 24, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Pat Schroeder (incumbent)

| votes = 82,742

| percentage = 61.46%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Gene Hutcheson

| votes = 49,845

| percentage = 37.02%

| change =

}}

{{Election box candidate with party link no change

| party = Socialist Workers Party (United States)

| candidate = Susan Lorraine Adley

| votes = 2,043

| percentage = 1.52%

| change =

}}

{{Election box majority no change

| votes = 32,897

| percentage = 24.44%

| change =

}}

{{Election box total no change

| votes = 134,630

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1980 =

{{Main|1980 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1980 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=April 15, 1981|others=Compiled from official sources by Thomas E. Ladd, under direction of Edmund L. Henshaw, Jr.|title=Statistics of the Presidential and Congressional Election of November 4, 1980|url=https://clerk.house.gov/member_info/electionInfo/1980election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011337/http://clerk.house.gov/member_info/electionInfo/1980election.pdf |archive-date=January 5, 2007 |access-date=January 23, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Pat Schroeder (incumbent)

| votes = 107,364

| percentage = 59.77%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Naomi Bradford

| votes = 67,804

| percentage = 37.75%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = John Mason

| votes = 3,888

| percentage = 2.16%

| change =

}}

{{Election box candidate with party link no change

| party = Socialist Workers Party (United States)

| candidate = Harold Sudmeyer

| votes = 566

| percentage = 0.32%

| change =

}}

{{Election box majority no change

| votes = 52,355

| percentage = 25.68%

| change =

}}

{{Election box total no change

| votes = 179,622

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1982 =

{{Main|1982 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1982 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=May 5, 1983|others=Compiled from official sources by Thomas E. Ladd, under direction of Benjamin J. Guthrie|title=Statistics of the Congressional Election of November 2, 1982|url=https://clerk.house.gov/member_info/electionInfo/1982election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011415/http://clerk.house.gov/member_info/electionInfo/1982election.pdf |archive-date=January 5, 2007 |access-date=January 23, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Pat Schroeder (incumbent)

| votes = 94,969

| percentage = 60.26%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Arch Decker

| votes = 59,009

| percentage = 37.44%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = Robin White

| votes = 3,619

| percentage = 2.30%

| change =

}}

{{Election box majority no change

| votes = 35,960

| percentage = 22.82%

| change =

}}

{{Election box total no change

| votes = 157,597

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1984 =

{{Main|1984 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1984 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=May 1, 1985|others=Compiled from official sources by Thomas E. Ladd., under direction of Benjamin J. Guthrie|title=Statistics of the Presidential and Congressional Election of November 6, 1984|url=https://clerk.house.gov/member_info/electionInfo/1984election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011555/http://clerk.house.gov/member_info/electionInfo/1984election.pdf |archive-date=January 5, 2007 |access-date=January 23, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Pat Schroeder (incumbent)

| votes = 126,348

| percentage = 61.97%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Mary Downs

| votes = 73,993

| percentage = 36.29%

| change =

}}

{{Election box candidate with party link no change

| party = Socialist Workers Party (United States)

| candidate = Cathy Emminizer

| votes = 1,846

| percentage = 0.91%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = Dwight Filley

| votes = 1,686

| percentage = 0.83%

| change =

}}

{{Election box majority no change

| votes = 52,355

| percentage = 25.68%

| change =

}}

{{Election box total no change

| votes = 203,873

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1986 =

{{Main|1986 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1986 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=May 29, 1987|others=Compiled from official sources by Dallas L. Dendy, Jr., under direction of Donnald K. Anderson|title=Statistics of the Congressional Election of November 4, 1986|url=https://clerk.house.gov/member_info/electionInfo/1986election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011438/http://clerk.house.gov/member_info/electionInfo/1986election.pdf |archive-date=January 5, 2007 |access-date=January 23, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Pat Schroeder (incumbent)

| votes = 106,113

| percentage = 68.37%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Joy Wood

| votes = 49,095

| percentage = 31.63%

| change =

}}

{{Election box majority no change

| votes = 57,018

| percentage = 36.74%

| change =

}}

{{Election box total no change

| votes = 155,208

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1988 =

{{Main|1988 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1988 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=April 20, 1989|others=Compiled from official sources by Dallas L. Dendy, Jr., under direction of Donnald K. Anderson|title=Statistics of the Presidential and Congressional Election of November 8, 1988|url=https://clerk.house.gov/member_info/electionInfo/1988election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011207/http://clerk.house.gov/member_info/electionInfo/1988election.pdf |archive-date=January 5, 2007 |access-date=January 23, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Pat Schroeder (incumbent)

| votes = 133,922

| percentage = 69.93%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Joy Wood

| votes = 57,587

| percentage = 30.07%

| change =

}}

{{Election box majority no change

| votes = 76,335

| percentage = 39.86%

| change =

}}

{{Election box total no change

| votes = 191,509

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1990 =

{{Main|1990 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1990 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=April 29, 1991|others=Compiled from official sources by Dallas L. Dendy, Jr., under direction of Donnald K. Anderson|title=Statistics of the Congressional Election of November 6, 1990|url=https://clerk.house.gov/member_info/electionInfo/1990election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011747/http://clerk.house.gov/member_info/electionInfo/1990election.pdf |archive-date=January 5, 2007 |access-date=January 23, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Pat Schroeder (incumbent)

| votes = 82,176

| percentage = 63.71%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Gloria Gonzales Roemer

| votes = 46,802

| percentage = 36.29%

| change =

}}

{{Election box majority no change

| votes = 35,374

| percentage = 27.42%

| change =

}}

{{Election box total no change

| votes = 128,978

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1992 =

{{Main|1992 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1992 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=May 31, 1993|others=Compiled from official sources by Dallas L. Dendy, Jr., under direction of Donnald K. Anderson|title=Statistics of the Presidential and Congressional Election of November 3, 1992|url=https://clerk.house.gov/member_info/electionInfo/1992election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011610/http://clerk.house.gov/member_info/electionInfo/1992election.pdf |archive-date=January 5, 2007 |access-date=January 23, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Pat Schroeder (incumbent)

| votes = 156,629

| percentage = 68.84%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Raymond Diaz Aragon

| votes = 70,902

| percentage = 31.16%

| change =

}}

{{Election box majority no change

| votes = 85,727

| percentage = 37.68%

| change =

}}

{{Election box total no change

| votes = 227,531

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1994 =

{{Main|1994 United States House of Representatives elections in Colorado}}{{Election box begin no change | title=1994 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=May 12, 1995|others=Compiled from official sources by Robin H. Carle.|title=Statistics of the Congressional Election of November 8, 1994|url=https://clerk.house.gov/member_info/electionInfo/1994election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011324/http://clerk.house.gov/member_info/electionInfo/1994election.pdf |archive-date=January 5, 2007 |access-date=January 23, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Pat Schroeder (incumbent)

| votes = 93,123

| percentage = 59.98%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = William F. Eggert

| votes = 61,978

| percentage = 39.92%

| change =

}}

{{Election box candidate with party link no change

| party = Write-in

| candidate = Write-ins

| votes = 154

| percentage = 0.10%

| change =

}}

{{Election box majority no change

| votes = 31,145

| percentage = 20.06%

| change =

}}

{{Election box total no change

| votes = 155,255

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1996 =

{{Main|1996 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1996 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=July 29, 1997|others=Compiled from official sources by Robin H. Carle|title=Statistics of the Presidential and Congressional Election of November 5, 1996|url=https://clerk.house.gov/member_info/electionInfo/1996election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011307/http://clerk.house.gov/member_info/electionInfo/1996election.pdf |archive-date=January 5, 2007 |access-date=January 23, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Diana DeGette

| votes = 112,631

| percentage = 56.93%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Joe Rogers

| votes = 79,540

| percentage = 40.20%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = Richard Combs

| votes = 5,668

| percentage = 2.86%

| change =

}}

{{Election box majority no change

| votes = 33,091

| percentage = 16.73%

| change =

}}

{{Election box total no change

| votes = 197,839

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 1998 =

{{Main|1998 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=1998 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=January 3, 1999|others=Compiled from official sources by Jeff Trandahl.|title=Statistics of the Congressional Election of November 3, 1998|url=https://clerk.house.gov/member_info/electionInfo/1998election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011242/http://clerk.house.gov/member_info/electionInfo/1998election.pdf |archive-date=January 5, 2007 |access-date=January 23, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Diana DeGette (incumbent)

| votes = 116,628

| percentage = 66.91%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Nancy McClanahan

| votes = 52,452

| percentage = 30.09%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = Richard Combs

| votes = 5,225

| percentage = 3.00%

| change =

}}

{{Election box majority no change

| votes = 64,176

| percentage = 36.82%

| change =

}}

{{Election box total no change

| votes = 174,305

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 2000 =

{{Main|2000 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=2000 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=June 21, 2001|others=Compiled from official sources by Jeff Trandahl|title=Statistics of the Congressional and Presidential Election of November 7, 2002|url=https://clerk.house.gov/member_info/electionInfo/2000election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011139/http://clerk.house.gov/member_info/electionInfo/2000election.pdf |archive-date=January 5, 2007 |access-date=January 23, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Diana DeGette (incumbent)

| votes = 141,831

| percentage = 68.71%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Jesse L. Thomas

| votes = 56,291

| percentage = 27.27%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = Richard Combs

| votes = 5,852

| percentage = 2.83%

| change =

}}

{{Election box candidate with party link no change

| party = Reform Party (US)

| candidate = Lyle Nasser

| votes = 2,452

| percentage = 1.19%

| change =

}}

{{Election box candidate with party link no change

| party = Write-in

| candidate = Write-ins

| votes = 8

| percentage = 0.00%

| change =

}}

{{Election box majority no change

| votes = 85,540

| percentage = 41.44%

| change =

}}

{{Election box total no change

| votes = 206,434

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 2002 =

{{Main|2002 United States House of Representatives elections in Colorado

}}

{{Election box begin no change | title=2002 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=May 1, 2003|others=Compiled from official sources by Jeff Trandahl|title=Statistics of the Congressional Election of November 5, 2002|url=https://clerk.house.gov/member_info/electionInfo/2002election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105010959/http://clerk.house.gov/member_info/electionInfo/2002election.pdf |archive-date=January 5, 2007 |access-date=January 22, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Diana DeGette (incumbent)

| votes = 111,718

| percentage = 66.28%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Ken Chlouber

| votes = 49,884

| percentage = 29.59%

| change =

}}

{{Election box candidate with party link no change

| party = Green Party of the United States

| candidate = Ken Seaman

| votes = 3,209

| percentage = 1.90%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = Kent Leonard

| votes = 2,584

| percentage = 1.53%

| change =

}}

{{Election box candidate with party link no change

| party = Constitution Party (US)

| candidate = George C. Lilly

| votes = 1,169

| percentage = 0.69%

| change =

}}

{{Election box majority no change

| votes = 61,834

| percentage = 36.69%

| change =

}}

{{Election box total no change

| votes = 168,564

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 2004 =

{{Main|2004 United States House of Representatives elections in Colorado

}}

{{Election box begin no change | title=2004 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=June 7, 2005|others=Compiled from official sources by Jeff Trandahl|title=Statistics of the Presidential and Congressional Election of November 2, 2004|url=https://clerk.house.gov/member_info/electionInfo/2004election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070105011249/http://clerk.house.gov/member_info/electionInfo/2004election.pdf |archive-date=January 5, 2007 |access-date=January 22, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Diana DeGette (incumbent)

| votes = 177,077

| percentage = 73.50%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Roland Chicas

| votes = 58,659

| percentage = 24.35%

| change =

}}

{{Election box candidate with party link no change

| party = Constitution Party (US)

| candidate = George C. Lilly

| votes = 5,193

| percentage = 2.16%

| change =

}}

{{Election box majority no change

| votes = 118,418

| percentage = 49.15%

| change =

}}

{{Election box total no change

| votes = 240,929

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 2006 =

{{Main|2006 United States House of Representatives elections in Colorado

}}

{{Election box begin no change | title= 2006 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=September 21, 2007|others=Compiled from official sources by Lorraine C. Miller|title=Statistics of the Congressional Election of November 7, 2006|url=https://clerk.house.gov/member_info/electionInfo/2006election.pdf|url-status=live|archive-url=https://web.archive.org/web/20070815210057/http://clerk.house.gov/member_info/electionInfo/2006election.pdf |archive-date=August 15, 2007 |access-date=January 22, 2001|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Diana DeGette (incumbent)

| votes = 129,446

| percentage = 79.77%

| change =

}}

{{Election box candidate with party link no change

| party = Green Party of the United States

| candidate = Thomas D. Kelly

| votes = 32,825

| percentage = 20.23%

| change =

}}

{{Election box majority no change

| votes = 96,621

| percentage = 59.54%

| change =

}}

{{Election box total no change

| votes = 162,271

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 2008 =

{{Main|2008 United States House of Representatives elections in Colorado

}}{{Election box begin no change | title= 2008 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=July 10, 2009|others=Compiled from official sources by Lorraine C. Miller|title=Statistics of the Presidential and Congressional Election of November 4, 2008|url=https://clerk.house.gov/member_info/electionInfo/2008election.pdf|url-status=live|archive-url=https://web.archive.org/web/20090730053249/http://clerk.house.gov/member_info/electionInfo/2008election.pdf |archive-date=July 30, 2009 |access-date=January 22, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Diana DeGette (incumbent)

| votes = 203,756

| percentage = 71.94%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = George C. Lilly

| votes = 67,346

| percentage = 23.78%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = Martin L. Buchanan

| votes = 12,136

| percentage = 4.28%

| change =

}}

{{Election box majority no change

| votes = 136,410

| percentage = 48.16%

| change =

}}

{{Election box total no change

| votes = 283,249

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 2010 =

{{Main|2010 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=2010 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=June 3, 2011|others=Compiled from official sources by Karen L. Haas|title=Statistics of the Congressional Election of November 2, 2010|url=https://clerk.house.gov/member_info/electionInfo/2010election.pdf|url-status=live|archive-url=https://web.archive.org/web/20110807101559/http://clerk.house.gov/member_info/electionInfo/2010election.pdf |archive-date=August 7, 2011 |access-date=January 22, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Diana DeGette (incumbent)

| votes = 140,073

| percentage = 67.42%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Mike Fallon

| votes = 59,747

| percentage = 28.76%

| change =

}}

{{Election box candidate with party link no change

| party = Green Party of the United States

| candidate = Gary Swing

| votes = 2,923

| percentage = 1.41%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = Clint Jones

| votes = 2,867

| percentage = 1.38%

| change =

}}

{{Election box candidate with party link no change

| party = Constitution Party (US)

| candidate = Chris Styskal

| votes = 2,141

| percentage = 1.03%

| change =

}}

{{Election box majority no change

| votes = 80,326

| percentage = 38.66%

| change =

}}

{{Election box total no change

| votes = 207,751

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 2012 =

{{Main|2012 United States House of Representatives elections in Colorado}}

{{Election box begin no change | title=2012 United States House of Representatives elections, Colorado's 1st district{{Cite web|date=February 28, 2013|others=Compiled from official sources by Karen L. Haas|title=Statistics of the Presidential and Congressional Election of November 6, 2012|url=https://clerk.house.gov/member_info/electionInfo/2012election.pdf|url-status=live|archive-url=https://web.archive.org/web/20130509064435/http://clerk.house.gov/member_info/electionInfo/2012election.pdf |archive-date=May 9, 2013 |access-date=January 22, 2021|website=Office of the Clerk, U.S. House of Representatives}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Diana DeGette (incumbent)

| votes = 237,579

| percentage = 68.23%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Danny Stroud

| votes = 93,217

| percentage = 26.77%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = Frank Atwood

| votes = 12,585

| percentage = 3.61%

| change =

}}

{{Election box candidate with party link no change

| party = Green Party of the United States

| candidate = Gary Swing

| votes = 4,829

| percentage = 1.39%

| change =

}}

{{Election box majority no change

| votes = 144,362

| percentage = 41.46%

| change =

}}

{{Election box total no change

| votes = 348,228

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 2014 =

{{Main|2014 United States House of Representatives elections in Colorado

}}

{{Election box begin no change | title=2014 United States House of Representatives elections, Colorado's 1st district{{Cite web|last=|first=|date=|title=Official Results November 4, 2014 General Election|url=https://results.enr.clarityelections.com/CO/53335/149718/Web01/en/summary.html|url-status=live|archive-url=https://web.archive.org/web/20141226021059/http://results.enr.clarityelections.com:80/CO/53335/149718/Web01/en/summary.html |archive-date=December 26, 2014 |access-date=January 22, 2021|website=Colorado Election Results|publisher=Colorado Secretary of State}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Diana DeGette (incumbent)

| votes = 183,281

| percentage = 65.81%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Martin Walsh

| votes = 80,682

| percentage = 28.97%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = Frank Atwood

| votes = 9,292

| percentage = 3.34%

| change =

}}

{{Election box candidate with party link no change

| party = Independent

| candidate = Danny Stroud

| votes = 5,236

| percentage = 1.88%

| change =

}}

{{Election box majority no change

| votes = 102,599

| percentage = 36.84%

| change =

}}

{{Election box total no change

| votes = 278,494

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 2016 =

{{Main|2016 United States House of Representatives elections in Colorado

}}

{{Election box begin no change | title=2016 United States House of Representatives elections, Colorado's 1st district{{Cite web|last=|first=|date=|title=Official Certified Results November 8, 2016 General Election|url=https://results.enr.clarityelections.com/CO/63746/184388/Web01/en/summary.html|url-status=live|archive-url=https://web.archive.org/web/20161215232853/http://results.enr.clarityelections.com:80/CO/63746/184388/Web01/en/summary.html |archive-date=December 15, 2016 |access-date=January 22, 2021|website=Colorado Election Results|publisher=Colorado Secretary of State}}

}}

{{Election box winning candidate with party link no change

| party = Democratic Party (US)

| candidate = Diana DeGette (incumbent)

| votes = 257,254

| percentage = 67.87%

| change =

}}

{{Election box candidate with party link no change

| party = Republican Party (US)

| candidate = Casper Stockham

| votes = 105,030

| percentage = 27.71%

| change =

}}

{{Election box candidate with party link no change

| party = Libertarian Party (US)

| candidate = Frank Atwood

| votes = 16,752

| percentage = 4.42%

| change =

}}

{{Election box majority no change

| votes = 152,224

| percentage = 40.16%

| change =

}}

{{Election box total no change

| votes = 379,036

| percentage = 100%

| change =

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

| swing =

}}

= 2018 =

{{Main|2018 United States House of Representatives elections in Colorado

}}

{{Election box begin no change

| title = 2018 United States House of Representatives elections, Colorado's 1st district{{Cite web|last=|first=|date=|title=2018 General Certification and Results|url=https://www.sos.state.co.us/pubs/elections/Results/2018/2018GeneralCertAndResults.pdf|url-status=live|archive-url=https://web.archive.org/web/20201018192612/https://www.sos.state.co.us/pubs/elections/Results/2018/2018GeneralCertAndResults.pdf |archive-date=October 18, 2020 |access-date=January 22, 2021|website=Colorado Secretary of State}}

}}

{{Election box winning candidate with party link no change

| candidate = Diana DeGette (incumbent)

| party = Democratic Party (US)

| votes = 272,886

| percentage = 73.81%

}}

{{Election box candidate with party link no change

| candidate = Casper Stockham

| party = Republican Party (US)

| votes = 85,207

| percentage = 23.05%

}}

{{Election box candidate with party link no change

| candidate = Raymon Doane

| party = Libertarian Party (US)

| votes = 11,600

| percentage = 3.14%

}}

{{Election box majority no change

| votes = 187,679

| percentage = 50.76%

| change =

}}

{{Election box total no change

| votes = 369,693

| percentage = 100.0%

}}

{{Election box hold with party link no change

| winner = Democratic Party (US)

}}

= 2020 =

{{Main|2020 United States House of Representatives elections in Colorado

}}

{{Election box begin no change

|title = 2020 United States House of Representatives elections, Colorado's 1st district{{Cite web|last=|first=|date=|title=Certificate - General Election Statewide Abstract of Votes Cast|url=https://www.sos.state.co.us/pubs/elections/Results/2020/StateAbstractCertAndReportSigned.pdf|url-status=live|archive-url=https://web.archive.org/web/20201214192735/https://www.sos.state.co.us/pubs/elections/Results/2020/StateAbstractCertAndReportSigned.pdf |archive-date=December 14, 2020 |access-date=January 22, 2021|website=Colorado Secretary of State}}

}}

{{Election box winning candidate with party link no change

| candidate = Diana DeGette (incumbent)

| party = Democratic Party (United States)

| votes = 331,621

| percentage = 73.65%

}}

{{Election box candidate with party link no change

| candidate = Shane Bolling

| party = Republican Party (United States)

| votes = 105,955

| percentage = 23.53%

}}

{{Election box candidate with party link no change

| candidate = Kyle Furey

| party = Libertarian Party (United States)

| votes = 8,749

| percentage = 1.94%

}}

{{Election box candidate with party link no change

| candidate = Paul Noel Fiorino

| party = Unity Party of America

| votes = 2,524

| percentage = 0.56%

}}

{{Election box candidate with party link no change

| candidate = Jan Kok

| party = Approval Voting Party

| votes = 1,441

| percentage = 0.32%

}}

{{Election box majority no change

| votes = 225,666

| percentage = 50.12%

| change =

}}

{{Election box total no change

| votes = 450,290

| percentage = 100.0%

}}

{{Election box hold with party link without swing

|winner = Democratic Party (United States)

}}

= 2022 =

{{Main|2022 United States House of Representatives elections in Colorado

}}

{{Election box begin no change

| title = 2022 United States House of Representatives elections, Colorado's 1st district{{cite web |title=Certificate & Results - General Election Statewide Abstract of Votes Cast |url=https://www.sos.state.co.us/pubs/elections/Results/2022/2022GeneralStateAbstractCertResults.pdf |website=Colorado Secretary of State}}

}}

{{Election box winning candidate with party link no change

| candidate = Diana DeGette (incumbent)

| party = Democratic Party (United States)

| votes = 226,929

| percentage = 80.3

}}

{{Election box candidate with party link no change

| candidate = Jennifer Qualteri

| party = Republican Party (United States)

| votes = 49,530

| percentage = 17.5

}}

{{Election box candidate with party link no change

| candidate = John Kittleson

| party = Libertarian Party (United States)

| votes = 6,157

| percentage = 2.2

}}

{{Election box candidate with party link no change

| candidate = Iris Boswell (write-in)

| party = Green Party of the United States

| votes = 70

| percentage = 0.0

}}

{{Election box total no change

| votes = 282,686

| percentage = 100.0

}}

{{Election box hold with party link no change

|winner = Democratic Party (United States)

}}

= 2024 =

{{Main|2024 United States House of Representatives elections in Colorado

}}

{{Election box begin no change

| title = 2024 United States House of Representatives elections, Colorado's 1st district

{{cite web |title=Certificate & results - 2024 General Election statewide abstract of votes cast |url=https://www.sos.state.co.us/pubs/elections/Results/2024/2024GeneralElectionStateAbstract.pdf |website=Colorado Secretary of State}}

}}

{{Election box winning candidate with party link no change

| candidate = Diana DeGette (incumbent)

| party = Democratic Party (United States)

| votes =264,606

| percentage =76.5

}}

{{Election box candidate with party link no change

| candidate = Valdamar Archuleta

| party = Republican Party (United States)

| votes =74,598

| percentage =21.6

}}

{{Election box candidate with party link no change

| candidate = Critter Milton

| party = Unity Party of America

| votes =4,084

| percentage =1.2

}}

{{Election box candidate with party link no change

| candidate = Daniel Lutz

| party = Approval Voting Party

| votes =2,351

| percentage =0.7

}}

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

| votes = 96

| percentage = 0.0

}}

{{Election box total no change

| votes =345,735

| percentage =100.0

}}{{Election box hold with party link no swing|winner=Democratic Party (United States)}}

Historical district boundaries

File:US-Congressional-District-CO-1.PNG

References

{{cite book|title = The Historical Atlas of Political Parties in the United States Congress|last = Martis|first = Kenneth C.|year = 1989|publisher = Macmillan Publishing Company|location = New York}}
{{cite book|title = The Historical Atlas of United States Congressional Districts|last = Martis|first = Kenneth C.|year = 1982|publisher = Macmillan Publishing Company|location = New York}}
[http://bioguide.congress.gov/biosearch/biosearch.asp Congressional Biographical Directory of the United States 1774–present]

{{coord|39|43|56|N|104|54|32|W|region:US_type:city_source:kolossus-eswiki|display=title}}

Category:Government of Denver

Category:Adams County, Colorado

Category:Arapahoe County, Colorado

Category:Jefferson County, Colorado