2020 South Carolina Democratic presidential primary

! colspan="2"| Pledged national
convention delegates{{cite web|title=South Carolina Democratic Delegation 2020|url=https://www.thegreenpapers.com/P20/SC-D|publisher=The Green Papers|date=March 31, 2019|access-date=April 12, 2019}}

| 6

| 4

| 3

| 4

| 5

| 8

| 5

| 7

| 12

!colspan=11|Polling aggregation

!Source of poll aggregation

!Date
updated

!Dates
polled

!Joe
Biden

!Bernie
Sanders

!Tom
Steyer

!Pete
Buttigieg

!Elizabeth
Warren

!Amy
Klobuchar

!Tulsi
Gabbard

!Un-
decided{{efn|Calculated by taking the difference of 100% and all other candidates combined; Bloomberg included as write-in votes are not permitted in SC primaries}}

| Feb 28, 2020

| Feb 23–27, 2020

| {{party shading/Democratic}}|35.8%

| 20.2%

| 13.4%

| 10.0%

| 8.2%

| 5.0%

| 2.6%

| 4.8%

| Feb 28, 2020

| Feb 23–27, 2020

| {{party shading/Democratic}}|39.7%

| 24.3%

| 11.7%

| 11.3%

| 6.0%

| 5.7%

| 2.3%

| –{{efn|Candidate percentages add up to more than 100%}}

| Feb 28, 2020

| until Feb 27, 2020{{Efn|name=trendline|FiveThirtyEight aggregates polls with a trendline regression of polls rather than a strict average of recent polls.|group=}}

| {{party shading/Democratic}}|38.4%

| 19.1%

| 12.4%

| 8.5%

| 7.0%

| 4.3%

| 2.6%

| 7.7%{{efn|Bloomberg 10.3%; Write-in votes are not permitted in SC primaries; this appears to be based on trendline regression|name=|group=}}

| {{party shading/Democratic}}|38.0%

| 21.2%

| 12.5%

| 9.9%

| 7.1%

| 5.0%

| 2.5%

| 4.9%{{Efn|Bloomberg only in 538, so no average can be made}}

| {{party shading/Democratic}} | 48.7%

| 19.8%

| 11.3%

| 8.2%

| 7.1%

| 3.1%

| 1.3%

| –

! colspan=16 | Polling in January and February 2020

! Poll source

! Date(s)
administered

! Sample
size{{efn|name=key|{{Polling Table Key}}}}

! Margin
{{nowrap|of error}}

! Joe
Biden

! Michael
Bloomberg

! Pete
Buttigieg

! Tulsi
Gabbard

! Amy
Klobuchar

! Bernie
Sanders

! Tom
Steyer

! Elizabeth
Warren

! Andrew
Yang

! Other

! Undecided

| style="text-align:left;" | South Carolina primary (popular vote)

| Feb 29, 2020

| –

| –

|{{party shading/Democratic}}|48.65%

| –

|8.2%

|1.26%

|3.13%

|19.77%

|11.34%

|7.07%

|0.2%

|0.38%{{efn|Bennet with 0.14%; Booker with 0.12%; Delaney with 0.07%; Patrick with 0.05%}}

| –

|Feb 25–28, 2020

| 477 (LV)

|± 4.0%

|{{party shading/Democratic}}|35%

| –

| 8%

| 2%

| 4%

| 24%

| 12%

| 7%

| –

| 2%

| 6%

|Feb 26–27, 2020

| 550 (LV)

|± 4.1%

|{{party shading/Democratic}}|41%

| –

| 11%

| 2%

| 6%

| 25%

| 11%

| 5%

| –

| –

| –

|Feb 26–27, 2020

| 1,081 (LV)

|± 2.99%

|{{party shading/Democratic}}|43.9%

| –

| 9.6%

| 1.7%

| 5.9%

| 22.8%

| 10.5%

| 5.6%

| –

| –

| –

|Feb 23–27, 2020

| 1416 (LV)

|± 2.6%

|{{party shading/Democratic}}|34%

| –

|13%

|3%

|5%

|25%

|13%

|7%

| –

| –

| –

|Feb 23–27, 2020

| 543 (LV)

|± 5.1%

|{{party shading/Democratic}}|28%

| –

|11%

|5%

|4%

|24%

|16%

|12%

| –

| –

|1%

|Feb 26, 2020

| 1,102 (LV)

|± 2.82%

|{{party shading/Democratic}}|40%

| –

| 9%

| 2%

| 6%

| 11%

| 12%

| 9%

| –

| –

| 12%

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Feb 25, 2020

| colspan="16" | Tenth Democratic primary debate

|Feb 23–25, 2020

| 454 (LV)

|± 4.6%

|{{party shading/Democratic}}|36%

| –

|6%

|1%

|4%

|16%

|15%

|8%

| –

|0%

|15%

|Feb 17–25, 2020

| 650 (LV)

|± 3.8%

|{{party shading/Democratic}}|35%

| –

|8%

|2%

|4%

|13%

|17%

|8%

| –

| –

|12%

|Feb 23–24, 2020

| 1,142 (LV)

|± 3.37%

|{{party shading/Democratic}}|31%

| –

|6%

|2%

|2%

|23%

|20%

|8%

| –

| –

|8%

|Feb 23–24, 2020

| 866 (LV)

|± 3.3%

|{{party shading/Democratic}}|36%

| –

|7%

|6%

|3%

|21%

|7%

|8%

| –

| –

|11%{{efn|Reported as "Someone else/Undecided"}}

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Feb 22, 2020

| colspan="13" | Nevada caucuses

|style="text-align:left;"|YouGov/CBS News[https://drive.google.com/file/d/1af1YadukuDouIbnoGHCAkIDgaRAXjr8M/view YouGov/CBS News]

|Feb 20–22, 2020

| 1,238 (LV)

|± 5.5%

|{{party shading/Democratic}}|28%

| –

|10%

|1%

|4%

|23%

|18%

|12%

| –

|3%{{efn|"Someone else" with 3%}}

|1%

|rowspan=2 style="text-align:left;"|Marist Poll/NBC News[http://maristpoll.marist.edu/wp-content/uploads/2020/02/NBC-News_Marist-Poll_SC-NOS-and-Tables_2002241049.pdf Marist Poll/NBC News]

|rowspan=2 |Feb 18–21, 2020

| 539 (LV)

|± 6.0%

|{{party shading/Democratic}}|27%

| –

|9%

|3%

|5%

|23%

|15%

|8%

| –

|2%{{efn|"Other" with 2%}}

|9%

|± 4.0%

|{{party shading/Democratic}}|25%

| –

|9%

|3%

|5%

|24%

|15%

|8%

| –

|2%{{efn|"Other" with 2%}}

|9%

|style="text-align:left;"|Winthrop University[https://www.winthrop.edu/winthroppoll/current-findings.aspx Winthrop University]

|Feb 9–19, 2020

| 443 (LV)

|± 4.7%

|{{party shading/Democratic}}|24%

| –

|7%

|1%

|4%

|19%

|15%

|6%

|1%{{efn|Accumulated responses until he withdrew; name not included afterwards.}}

|2%{{efn|"Someone else" with 2%; Bennet and Patrick were included until they withdrew; Bennet received no voters; Patrick accumulated few enough to round down to 0%}}

|22%

|Feb 12–18, 2020

| 400 (LV)

|± 7.5%

|{{party shading/Democratic}}|23%

| –

|11%

|4%

|9%

|21%

|13%

|11%

| –

|4%{{efn|"Another candidate" with 4%}}

|4%

|Feb 12–14, 2020

| 1015 (LV)

| –

|23%

| –

|15%

|1%

|8%

|23%

|20%

|9%

| –

| –

|1%

|Feb 12–13, 2020

| 703 (LV)

|± 4.3%

|{{party shading/Democratic}}|28%

|6%

|8%

|1%

|7%

|20%

|14%

|7%

| –

|0%

|8%

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Feb 11–12, 2020

| colspan="13" | New Hampshire primary; Yang withdraws from the race.

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Feb 3, 2020

| colspan="13" | Iowa caucus

|Jan 31 – Feb 3, 2020

| 277 (LV)

|± 5.9%

|{{party shading/Democratic}}|28%

|4%

|7%

|4%

|2%

|20%

|15%

|11%

|1%

|0%{{efn|Bennet and Patrick with 0%}}

|8%

|Jan 31 – Feb 2, 2020

| 469 (LV)

|± 5.3%

|{{party shading/Democratic}}|37%

|1%

|4%

|2%

|2%

|14%

|19%

|8%

|3%

|0%{{efn|Bennet and Patrick with 0%}}

|10%

|Jan 26–29, 2020

| 651 (LV)

|± 4%

|{{party shading/Democratic}}|25%

| –

|7%

|3%

|2%

|20%

|18%

|11%

|3%

|1%{{efn|Delaney with 1%; Bennet and Patrick with 0%}}

|10%

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Jan 13, 2020

| colspan="13" | Booker withdraws from the race

|Jan 9–13, 2020

|600 (LV)

| –

| {{party shading/Democratic}}|36%{{efn|data from 538.com}}

| –{{efn|not released}}

| 5%{{efn|data from 538.com}}

| –{{efn|not released}}

| –{{efn|not released}}

| 15%{{efn|data from 538.com}}

| 12%{{efn|data from 538.com}}

| 10%{{efn|data from 538.com}}

| –{{efn|not released}}

| –{{efn|not released}}

| –{{efn|not released}}

|style="text-align:left;"|Fox News[https://www.foxnews.com/politics/fox-news-poll-january-5-8-2020 Fox News]

|Jan 5–8, 2020

|808 (RV)

|± 3.5%

|{{party shading/Democratic}}|36%

|2%

|4%

|1%

|1%

|14%

|15%

|10%

|2%

|3%{{efn|Booker with 2%; Bennet, Delaney, Patrick, and Williamson with 0%; "None of the above" with 1%}}

|11%

! colspan="14" | Polling before January 2020

! Poll source

! Date(s)
administered

! Sample
size{{efn|name=key}}

! Margin
{{nowrap|of error}}

! Joe
Biden

! Cory
Booker

! Pete
Buttigieg

! Kamala
Harris

! Beto
O'Rourke

! Bernie
Sanders

! Tom
Steyer

! Elizabeth
Warren

! Other

! Undecided

|Dec 6–11, 2019

|392 (LV)

|± 4.9%

| {{party shading/Democratic}}|27%

| 5%

| 9%

| –

| –

| 20%

| 5%

| 19%

| 13%{{efn|Gabbard with 4%; Bloomberg with 3%; Klobuchar and Yang with 2%; Patrick and Williamson with 1%; Bennet, Castro and Delaney with 0%}}

| –

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Dec 3, 2019

| colspan="14" | Harris withdraws from the race

|Nov 22 – Dec 2, 2019

|400 (LV)

|± 7.5%

|{{party shading/Democratic}}|39%

|2%

|10%

|2%

| –

|13%

|7%

|10%

|13%{{efn|Gabbard with 4%; Yang with 3%; Bloomberg and Klobuchar with 2%; Delaney and Patrick with 1%; Bennet, Sestak and Williamson with 0%; Bullock and Castro with no voters}}

|4%

|style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/south-carolina/release-detail?ReleaseID=3649 Quinnipiac University]

|Nov 13–17, 2019

|768 (LV)

|± 4.8%

|{{party shading/Democratic}}|33%

|2%

|6%

|3%

|–

|11%

|5%

|13%

|7%{{efn|Yang with 4%; Gabbard, Klobuchar and Williamson with 1%; Bennet, Bullock, Castro, Delaney, Messam, Patrick and Sestak with 0%}}

|18%

|style="text-align:left;"|YouGov/CBS News[https://www.cbsnews.com/news/pete-buttigieg-rises-in-iowa-new-hampshire-biden-back-atop-delegate-hunt-cbs-news-poll/ YouGov/CBS News]

|Nov 6–13, 2019

|933 (RV)

|± 4.2%

|{{party shading/Democratic}}|45%

|2%

|8%

|5%

|–

|15%

|2%

|17%

|6%{{efn|Bullock, Delaney, Gabbard, and Klobuchar with 1%; Bennet, Castro, Messam, Sestak, Williamson, and Yang with 0%; someone else with 2%}}

| –

|Nov 5–13, 2019

|426 (LV)

|–

|{{party shading/Democratic}}|36%

|2%

|3%

|4%

|–

|10%

|8%

|10%

|6%{{efn|Bloomberg, Gabbard, Klobuchar, Williamson and Yang with 1%; Bennet, Bullock, Castro, Delaney, Messam and Sestak with 0%; someone else with 1%}}

|23%

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Nov 1, 2019

| colspan=12 | O'Rourke withdraws from the race

| style="text-align:left;"|Monmouth University[https://www.monmouth.edu/polling-institute/documents/monmouthpoll_sc_102319.pdf/ Monmouth University]

| Oct 16–21, 2019

| 402 (LV)

| ± 4.9%

| {{party shading/Democratic}}|33%

| 2%

| 3%

| 6%

| 1%

| 12%

| 4%

| 16%

| 7%{{efn|Klobuchar and Yang with 2%; Castro, Delaney and Gabbard with 1%; Bennet, Bullock, Ryan, Sestak and Williamson with 0%}}

| 15%

| Oct 15–21, 2019

| 731 (LV)

| ± 3.6%

| {{party shading/Democratic}}| 30%

| 3%

| 9%

| 11%

| 1%

| 13%

| 5%

| 19%

| 11%{{efn|Yang with 4%; Gabbard and Klobuchar with 3%; Bennet with 1%; Bullock, Castro, Delaney, Ryan and Williamson with 0%}}

| –

| Oct 8–10, 2019

| 607 (LV)

| ± 3.7%

| {{party shading/Democratic}}|32%

| 2%

| 4%

| 5%

| 1%

| 8%

| –

| 16%

| {{party shading/Democratic}}| 33%{{efn|Yang with 2%}}

| –{{efn| The poll did not announce this result separately; it is listed as part of 'Other'.}}

| style="text-align:left;"|YouGov/CBS News[https://drive.google.com/file/d/0B6m3FrMzNqO5b1lVMU5PYWRGV0I0b3pjbEF6WjZaS2xnXzF3/view YouGov/CBS News]

| Oct 3–11, 2019

| 915 (RV)

| ±3.9%

| {{party shading/Democratic}}|43%

| 3%

| 4%

| 7%

| 1%

| 16%

| 2%

| 18%

| 6%{{efn|Bennet, Klobuchar, Ryan, Williamson, and Yang with 1%; Bullock, Castro, Delaney, Gabbard, Messam, and Sestak with 0%; "someone else" with 0%}}

|–

| Oct 3–7, 2019

| 516 (LV)

| ± 4.3%

| {{party shading/Democratic}}|34%

| 6%

| 0%

| 4%

| 2%

| 10%

| 7%

| 9%

| 10%{{efn|Bullock, Klobuchar and Yang with 2%; Castro, Delaney, Gabbard and Williamson with 1%; Bennet and Ryan with 0%}}

| 19%

| style="text-align:left;"|Fox News[https://www.foxnews.com/politics/fox-news-poll-results-september-29-october-2-2019-south-carolina Fox News]

| Sep 29 – Oct 2, 2019

| 803 (LV)

| ± 3.5%

| {{party shading/Democratic}}|41%

| 3%

| 2%

| 4%

| 0%

| 10%

| 4%

| 12%

| 8%{{efn|Bennet, Gabbard, Ryan, Williamson and Yang with 1%; Bullock, Castro, Delaney, Klobuchar, and Messam with < 0.5%; Sestak with 0%; someone else with 3%}}

| 16%

| style="text-align:left;"|Winthrop University

| Sep 21–30, 2019

| 462 (RV)

| ± 4.9%

| {{party shading/Democratic}}|37%

| 3%

| 4%

| 7%

| 2%

| 8%

| 2%

| 17%

| 6%{{efn|Yang with 2%; Gabbard, Klobuchar, Castro and "Someone else" with 1%; Delaney, Sestak and Bennet with 0%; Bullock, Messam, Ryan and Williamson with less than 0.5%}}

| 12%

| style="text-align:left;"|CNN/SSRS[http://cdn.cnn.com/cnn/2019/images/09/28/rel1_sc.pdf CNN/SSRS]

| Sep 22–26, 2019

| 406 (LV)

| ± 5.9%

| {{party shading/Democratic}}|37%

| 2%

| 4%

| 3%

| 2%

| 11%

| 3%

| 16%

| 4%{{efn|Bennet, Klobuchar, Gabbard, and Williamson with 1%; Bullock, Castro, Delaney, Gabbard, Ryan, and Yang with 0%}}

| 10%

| style="text-align:left;"|YouGov/CBS News[https://drive.google.com/file/d/1jqA3l_nC6bMk3_0rLpv4bj81pwJ3n4Aw/view YouGov/CBS News]

| Aug 28 – Sep 4, 2019

| 849 (RV){{efn|poll results among likely voters of this RV sample}}

| ± 4.3%

| {{party shading/Democratic}}|43%

| 2%

| 4%

| 7%

| 1%

| 18%

| 1%

| 14%

| 9%{{efn|de Blasio, Bullock, Delaney, Gabbard, Klobuchar, Ryan, and Yang with 1%; Bennet, Castro, Messam, Sestak and Williamson with 0%; someone else with 2%}}

| –

| Aug 9–12, 2019

| 521 (LV)

| ± 4.3%

| {{party shading/Democratic}}| 36%

| 4%

| 5%

| 12%

| 1%

| 16%

| 1%

| 17%

| 7%{{efn|Gabbard with 2%; Castro, Delaney, Klobuchar, Ryan, and Yang with 1%; Bennet, Bullock, de Blasio, Gillibrand, Inslee, Messam, and Williamson with 0%}}

| –

| Jul 23–25, 2019

| 554 (LV)

| ± 3.8%

| {{party shading/Democratic}}| 31%

| 2%

| 4%

| 10%

| 0%

| 9%

| –

| 12%

| 8%{{efn|Yang with 1%; "A different Democratic candidate" with 7%}}

| 24%

| style="text-align:left;"|Monmouth University[https://www.monmouth.edu/polling-institute/documents/monmouthpoll_sc_072519.pdf/ Monmouth University]

| Jul 18–22, 2019

| 405 (LV)

| ± 4.9%

| {{party shading/Democratic}}|39%

| 2%

| 5%

| 12%

| 1%

| 10%

| 2%

| 9%

| 3%{{efn|Bennet and Klobuchar with 1%; Castro, de Blasio, Gabbard, Gillibrand, and Inslee with <1%; Bullock, Delaney, Gravel, Hickenlooper, Messam, Moulton, Ryan, Sestak, Williamson, and Yang with 0%}}

| 17%

| style="text-align:left;"|YouGov/CBS News[https://drive.google.com/file/d/0ByVu4fDHYJgVSHlRQWtlanA5MFFNdldVQnR6T2VPWlhFRmdr/view YouGov/CBS News]

| Jul 9–18, 2019

| 997 (RV){{efn|poll results among likely voters of this RV sample}}

| ± 3.8%

| {{party shading/Democratic}}|39%

| 3%

| 5%

| 12%

| 2%

| 17%

| 1%

| 12%

| 9%{{efn|Delaney, Hickenlooper, Inslee, Klobuchar, Ryan, Williamson, and Yang with 1%; Bennet, Bullock, Castro, de Blasio, Gabbard, Gillibrand, Gravel, Messam, Moulton, and Sestak with 0%}}

| –

| style="text-align:left;"|Fox News[https://www.scribd.com/document/416578375/Fox-July-7-10-2019-Complete-South-Carolina-Topline-July-11-Release Fox News]

| Jul 7–10, 2019

| 701 (LV)

| ± 3.5%

| {{party shading/Democratic}}| 35%

| 3%

| 2%

| 12%

| 0%

| 14%

| 0%

| 5%

| 3%{{efn|Delaney, Williamson, and Yang with 1%; Bennet, de Blasio, Bullock, Castro, Gabbard, Gillibrand, Hickenlooper, Inslee, Klobuchar, Messam, Moulton, Ryan, and Sestak with 0%}}

| 20%

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Jul 9, 2019

| colspan="12" | Steyer announces his candidacy

| Jun 29 – Jul 4, 2019

| 421 (LV)

| –

| {{party shading/Democratic}}| 27%

| 6%

| 6%

| 21%

| 1%

| 16%

| 0%

| 15%

| 8%{{efn|Gabbard with 2%; Bennet, Bullock, Castro, Delaney, Hickenlooper, Williamson, and Yang with 1%; Gravel, Inslee, Moulton, Ryan, and Swalwell with 0%}}

| –

| Jun 17–20, 2019

| 308 (LV)

| –

| {{party shading/Democratic}}| 39%

| 5%

| 11%

| 9%

| 5%

| 13%

| 0%

| 15%

| 5%{{efn|Yang with 2%; Bullock, de Blasio, and Ryan with 1%; Castro, Delaney, Gabbard, Gillibrand, Gravel, Hickenlooper, Inslee, Klobuchar, Messam, Moulton, Swalwell, and Williamson with 0%}}

| –

| Jun 11–14, 2019

| 933 (LV)

| ± 3.2%

| {{party shading/Democratic}}| 37%

| 5%

| 11%

| 9%

| 4%

| 9%

| –

| 17%

| 8%{{efn|Yang with 3%; de Blasio, Gabbard, Gillibrand, Klobuchar, and Williamson with 1%; Bennet, Delaney, Gravel, Hickenlooper, Messam, Moulton, Ryan, and Swalwell with 0%}}

| –

| style="text-align:left;"|YouGov/CBS News[https://drive.google.com/file/d/0ByVu4fDHYJgVNFB2S3h5MUQzUzVDNjBQaExTdkZDQ0RGcTU4/view YouGov/CBS News]

| May 31 – Jun 12, 2019

| 552 (LV)

| –

| {{party shading/Democratic}}| 45%

| 4%

| 6%

| 7%

| 4%

| 18%

| –

| 8%

| 8%{{efn|Gillibrand, Gravel, Klobuchar, Messam, and Yang with 1%; Bennet, Bullock, Castro, de Blasio, Delaney, Gabbard, Hickenlooper, Inslee, Moulton, Ryan, Swalwell, and Williamson with 0%; others with 3%}}

| –

| May 23–29, 2019

| 183 (LV)

| ± 7.2%

| {{party shading/Democratic}}| 36%

| 4%

| 7%

| 4%

| 2%

| 13%

| –

| 12%

| 4%{{efn|Gillibrand with 2%; Castro, Gabbard, Hickenlooper, and Inslee with 1%; Delaney, Klobuchar, and Yang with 0%}}

| –

| May 22–24, 2019

| 600 (LV)

| ± 4.0%

| {{party shading/Democratic}}| 37%

| 2%

| 3%

| 7%

| –

| 10%

| –

| 8%

| –

| 32%

| May 14–16, 2019

| 381 (LV)

| ± 5.0%

| {{party shading/Democratic}}| 42%

| 4%

| 8%

| 10%

| –

| 7%

| –

| 8%

| –

| –

| May 6–9, 2019

| 595 (LV)

| ± 4.0%

| {{party shading/Democratic}}| 46%

| 4%

| 8%

| 10%

| 2%

| 15%

| –

| 8%

| 5%{{efn|Yang with 2%; Abrams, Klobuchar, and Williamson with 1%; Bennet, Castro, Delaney, Gabbard, Gillibrand, Hickenlooper, Inslee, Ryan, and Swalwell with 0%}}

| –

| Apr 30 – May 2, 2019

| 568 (LV)

| ± 4.5%

| {{party shading/Democratic}}| 48%

| 4%

| 5%

| 4%

| 1%

| 12%

| –

| 5%

| 1%{{efn|Klobuchar with 1%}}

| 20%

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Apr 25, 2019

| colspan="12" | Biden announces his candidacy

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Apr 14, 2019

| colspan="12" | Buttigieg announces his candidacy

| rowspan=2| Mar 31 – Apr 4, 2019

| rowspan=2| 744 (LV)

| rowspan=2| ± 3.6%

| {{party shading/Democratic}}| 32%

| 9%

| 7%

| 10%

| 9%

| 14%

| –

| 6%

| 12%{{efn|Abrams with 7%; Castro, Gillibrand, Hickenlooper, Klobuchar, and Yang with 1%; Bennet, Delaney, Gabbard, Inslee, McAuliffe, Swalwell, and Williamson with 0%}}

| –

| 12%

| 12%

| 15%

| 16%

| {{party shading/Democratic}}| 24%

| –

| 11%

| 12%{{efn|Castro, Gillibrand, Hickenlooper, and Klobuchar with 2%; Delaney, Inslee, Messam, and Yang with 1%; Gabbard and Williamson with 0%}}

| –

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Mar 14, 2019

| colspan="12" | O'Rourke announces his candidacy

| Feb 28 – Mar 2, 2019

| 291 (LV)

| ± 5.7%

| {{party shading/Democratic}}| 37%

| 6%

| 0%

| 9%

| 5%

| 21%

| –

| 5%

| 16%{{efn|Gillibrand with 3%; Bloomberg and Gabbard with 2%: Brown and Klobuchar with 1%; Castro, and Delaney with 0%; others with 8%}}

| –

| rowspan=2| Feb 15–18, 2019

| rowspan=2| 600 (LV)

| rowspan=2| ± 4.0%

| {{party shading/Democratic}}| 36%

| 10%

| –

| 13%

| 8%

| 14%

| –

| 9%

| 12%{{efn|Brown and Holder with 2%; Bloomberg, Castro, Gabbard, Gillibrand, Hickenlooper, Klobuchar, Swalwell, and Yang with 1%; Bennet, Cuomo, de Blasio, Delaney, McAuliffe, and Williamson with 0%}}

| –

| 28%

| 1%

| {{party shading/Democratic}}| 35%

| –

| –

| –

| 20%

| 18%{{efn|Klobuchar with 5%; Castro with 4%; Delaney with 3%; Gabbard and Williamson with 2%; Gillibrand and Yang with 1%}}

| –

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Feb 19, 2019

| colspan="12" | Sanders announces his candidacy

| style="border-right-style:hidden;"|

| style="border-right-style:hidden;"| Feb 9, 2019

| colspan="12" | Warren announces her candidacy

| Jan 31 – Feb 2, 2019

| 557 (LV)

| ± 4.0%

| {{party shading/Democratic}}| 36%

| 5%

| –

| 12%

| 2%

| 8%

| –

| 4%

| 2%{{efn|Klobuchar with 1%; Gillibrand with 0%}}

| 31%

! colspan=10 | Head-to-head polling

! Poll source

! Date(s)
administered

! Sample
size

! Margin
{{nowrap|of error}}

! Joe
Biden

! Pete
Buttigieg

! Bernie
Sanders

! Elizabeth
Warren

! Other

! Undecided

| –

| 34%

| –

| –

| –

| –

| –

| 29%

| {{efn|Would not vote with 4%}}

| 6%

| 39%

| {{party shading/Democratic}}|61%

| –

| –

| –

| 36%

| –

| {{party shading/Democratic}}|64%

| –

| –

| –

| {{party shading/Democratic}}|54%

| 46%

| –

| –

| –

| 15%

| –

| –

| 16%

| –

| –

| 15%

| –

| 18%

! width="11%" | County

! width="7%" | Biden

! width="7%" | %

! width="7%" | Sanders

! width="7%" | %

! width="7%" | Steyer

! width="7%" | %

! width="7%" | Buttigieg

! width="7%" | %

! width="7%" | Warren

! width="7%" | %

! width="7%" | Klobuchar

! width="7%" | %

! width="7%" | Gabbard

! width="7%" | %

! width="7%" | Others

! width="7%" | %

!Rejected ballots

!Total votes

!Turnout of registered electors in %

|1,129

|57.69

|286

|14.61

|312

|15.94

|80

|4.09

|60

|3.07

|42

|2.15

|26

|1.33

|22

|1.13

|3

|1,960

|12.54

|6,769

|44.81

|3,169

|20.98

|1,988

|13.16

|1,246

|8.25

|1,030

|6.82

|607

|4.02

|194

|1.28

|102

|0.67

|33

|15,138

|13.00

|552

|58.29

|119

|12.57

|241

|25.45

|9

|0.95

|17

|1.80

|2

|0.21

|2

|0.21

|5

|0.53

|0

|947

|16.37

|5,564

|41.83

|3,124

|23.49

|1,808

|13.59

|988

|7.43

|984

|7.40

|524

|3.94

|230

|1.73

|80

|0.61

|16

|13,318

|11.05

|1,099

|58.77

|277

|14.81

|387

|20.70

|26

|1.39

|43

|2.30

|19

|1.02

|4

|0.21

|15

|0.81

|6

|1,876

|19.82

|1,068

|59.63

|274

|15.30

|308

|17.20

|32

|1.79

|49

|2.74

|26

|1.45

|13

|0.73

|21

|1.17

|2

|1,793

|13.08

|11,275

|45.83

|3,749

|15.24

|3,009

|12.23

|3,067

|12.47

|1,699

|6.91

|1,371

|5.57

|290

|1.18

|143

|0.58

|43

|24,646

|18.81

|10,573

|49.08

|4,598

|21.34

|2,030

|9.42

|1,793

|8.32

|1,495

|6.94

|527

|2.45

|383

|1.78

|143

|0.66

|31

|21,573

|16.23

|1,118

|59.88

|288

|15.43

|302

|16.18

|47

|2.52

|42

|2.25

|34

|1.82

|25

|1.34

|11

|0.58

|5

|1,872

|17.69

|28,292

|44.30

|12,245

|19.17

|4,734

|7.41

|8,078

|12.65

|6,932

|10.85

|2,302

|3.60

|1,013

|1.59

|268

|0.42

|84

|63,948

|21.78

|1,812

|57.14

|674

|21.22

|347

|10.94

|104

|3.28

|106

|3.34

|66

|2.08

|38

|1.20

|25

|0.79

|2

|3,173

|9.60

|2,033

|63.77

|633

|19.86

|223

|6.99

|102

|3.20

|88

|2.76

|58

|1.82

|23

|0.72

|28

|0.89

|6

|3,194

|15.56

|1,825

|64.06

|537

|18.85

|225

|7.90

|90

|3.16

|76

|2.67

|44

|1.54

|26

|0.91

|26

|0.92

|3

|2,852

|10.93

|2,694

|68.50

|487

|12.38

|434

|11.03

|97

|2.47

|83

|2.11

|62

|1.58

|36

|0.92

|40

|1.03

|15

|3,948

|17.14

|2,318

|57.76

|679

|16.92

|64

|1.59

|73

|1.82

|174

|4.34

|526

|13.11

|174

|4.34

|26

|0.63

|5

|4,018

|16.00

|4,231

|61.11

|1,105

|15.96

|911

|13.16

|287

|4.15

|208

|3.00

|86

|1.24

|55

|0.79

|41

|0.59

|16

|6,940

|16.03

|1,485

|64.09

|362

|15.62

|319

|13.77

|39

|1.68

|39

|1.68

|38

|1.64

|8

|0.35

|27

|1.17

|9

|2,326

|12.47

|7,657

|47.55

|3,494

|21.70

|1,509

|9.37

|1,457

|9.05

|1,189

|7.38

|403

|2.50

|316

|1.96

|77

|0.48

|21

|16,123

|15.24

|1,327

|55.87

|419

|17.64

|370

|15.58

|77

|3.24

|89

|3.75

|44

|1.85

|20

|0.84

|29

|1.21

|7

|2,382

|13.84

|2,352

|61.09

|428

|11.12

|773

|20.08

|84

|2.18

|88

|2.29

|47

|1.22

|50

|1.30

|28

|0.73

|10

|3,860

|24.63

|8,676

|58.82

|2,635

|17.86

|1,877

|12.73

|569

|3.86

|607

|4.12

|221

|1.50

|83

|0.56

|82

|0.57

|29

|14,779

|16.76

|4,776

|52.46

|1,574

|17.62

|1,018

|11.39

|697

|7.80

|376

|4.21

|327

|3.66

|114

|1.28

|52

|0.59

|16

|8,950

|20.19

|20,661

|38.17

|13,376

|24.71

|5,774

|10.67

|5,688

|10.51

|5,207

|9.62

|2,352

|4.35

|830

|1.53

|235

|0.43

|57

|54,180

|16.45

|2,693

|47.88

|1,060

|18.85

|1,091

|19.40

|278

|4.94

|241

|4.29

|165

|2.93

|57

|1.01

|39

|0.70

|7

|5,631

|13.75

|1,116

|53.09

|319

|15.18

|541

|25.74

|33

|1.57

|40

|1.90

|18

|0.86

|12

|0.57

|23

|1.10

|10

|2,112

|16.46

|13,281

|43.82

|6,757

|22.29

|3,841

|12.67

|2,877

|9.49

|1,724

|5.69

|1,269

|4.19

|387

|1.28

|175

|0.58

|59

|30,370

|13.02

|1,794

|52.75

|543

|15.97

|573

|16.85

|189

|5.56

|122

|3.59

|110

|3.23

|42

|1.23

|28

|0.83

|5

|3,406

|16.72

|3,577

|55.29

|1,083

|16.74

|896

|13.85

|361

|5.58

|308

|4.76

|144

|2.23

|67

|1.04

|34

|0.54

|13

|6,483

|15.37

|4,340

|51.48

|1,695

|20.11

|365

|4.33

|858

|10.18

|567

|6.73

|422

|5.01

|112

|1.33

|71

|0.84

|15

|8,445

|13.43

|2,413

|49.76

|1,001

|20.64

|748

|15.43

|204

|4.21

|244

|5.03

|120

|2.47

|73

|1.51

|46

|0.95

|10

|4,859

|12.19

|1,876

|68.87

|332

|12.19

|364

|13.36

|49

|1.80

|53

|1.95

|11

|0.40

|18

|0.66

|21

|0.76

|7

|2,731

|23.50

|9,720

|39.87

|5,758

|23.62

|2,827

|11.60

|2,573

|10.55

|2,094

|8.59

|795

|3.26

|502

|2.06

|111

|0.46

|15

|24,395

|13.00

|2,735

|66.87

|625

|15.28

|508

|12.42

|60

|1.47

|78

|1.91

|38

|0.93

|13

|0.32

|33

|0.81

|13

|4,103

|19.52

|1,485

|61.44

|309

|12.78

|487

|20.15

|29

|1.20

|35

|1.45

|34

|1.41

|13

|0.54

|25

|1.04

|9

|2,426

|13.59

|730

|48.18

|208

|13.73

|381

|25.15

|68

|4.49

|42

|2.77

|54

|3.56

|16

|1.06

|16

|1.06

|4

|1,519

|20.62

|1,787

|55.41

|482

|14.95

|460

|14.26

|205

|6.36

|124

|3.84

|83

|2.57

|57

|1.77

|27

|0.84

|4

|3,229

|13.66

|2,181

|37.60

|1,392

|24.00

|742

|12.79

|560

|9.66

|405

|6.98

|403

|6.95

|81

|1.40

|36

|0.61

|5

|5,805

|11.07

|9,089

|69.86

|1,388

|10.67

|1,690

|12.99

|238

|1.83

|370

|2.84

|72

|0.55

|71

|0.55

|92

|0.70

|20

|13,030

|22.91

|2,513

|32.62

|2,141

|27.79

|901

|11.70

|761

|9.88

|823

|10.68

|375

|4.87

|163

|2.12

|27

|0.35

|4

|7,708

|10.45

|35,869

|53.15

|11,347

|16.81

|8,269

|12.25

|4,491

|6.65

|5,392

|7.99

|1,285

|1.90

|528

|0.78

|309

|0.45

|65

|67,555

|25.71

|782

|54.01

|262

|18.09

|243

|16.78

|54

|3.73

|51

|3.52

|27

|1.86

|15

|1.04

|14

|0.97

|3

|1,451

|12.52

|9,977

|42.31

|5,870

|24.89

|2,911

|12.34

|1,849

|7.84

|1,816

|7.70

|749

|3.18

|278

|1.18

|131

|0.56

|31

|23,613

|12.45

|8,375

|65.41

|1,673

|13.07

|1,667

|13.02

|406

|3.17

|386

|3.01

|122

|0.95

|74

|0.58

|101

|0.80

|23

|12,827

|18.34

|1,295

|57.22

|430

|19.00

|322

|14.23

|58

|2.56

|73

|3.23

|34

|1.50

|19

|0.84

|32

|1.42

|2

|2,265

|13.72

|3,682

|70.08

|708

|13.48

|605

|11.52

|47

|0.89

|94

|1.79

|19

|0.36

|45

|0.86

|54

|1.04

|16

|5,270

|24.34

|11,556

|43.60

|6,551

|24.72

|1,242

|4.69

|3,110

|11.73

|2,307

|8.70

|1,241

|4.68

|338

|1.28

|159

|0.60

|35

|26,539

|14.44