This is a list of nationwide public opinion polls that were conducted relating to the Democratic primaries for the 2020 United States presidential election. The persons named in the polls were declared candidates or had received media speculation about their possible candidacy.

Given the large number of candidates, the scores of certain low-polling and infrequently-polled candidates have been combined within the "other" column; their exact scores may be viewed by viewing the footnotes associated with each poll. The polls included are among Democrats or Democrats and Democratic-leaning independents, and do not include Republican-leaning independents. Open-ended polls are included and marked with an asterisk (*), but closed-ended versions of such polls are listed where possible. If multiple versions of polls are provided, the version used for debate qualification is prioritized, then the version among likely voters, then registered voters, then adults.

Background

The Democratic National Committee (DNC) determined that candidates could qualify for the first two Democratic primary debates either by polling at 1% or higher in at least three national or early-state (Iowa, New Hampshire, Nevada, and South Carolina) polls sponsored or conducted by designated organizations (in different regions if by the same organization) published after January 1, 2019, up until June 12, 2019, or by a fundraising threshold requiring at least 65,000 unique donors with at least 200 in 20 different states. If more than 20 candidates met either threshold, candidates meeting both thresholds would be given highest priority for entry into the debates, followed by those with the highest polling average and those with the most donors. The pollsters and sponsors of polls designated for consideration by the DNC were the Associated Press, ABC News, CBS News, CNN, The Des Moines Register, Fox News, the Las Vegas Review-Journal, Monmouth University, NBC News, The New York Times, National Public Radio, Quinnipiac University, Reuters, the University of New Hampshire, USA Today, The Wall Street Journal, The Washington Post, and Winthrop University. Open-ended polls did not count towards the polling threshold. Only top-line polling results counted toward the threshold.

For the third and fourth primary debates, candidates were required to meet both polling and fundraising thresholds. Prior considerations were only polls between June 28 and August 28, 2019, and increased to 4 qualifying polls at 2% support, now excluding surveys sponsored by the Las Vegas Review-Journal and Reuters; the latter requirement was also increased, to 130,000 unique donors with at least 400 in 20 different states.

A total of 29 major candidates declared their candidacies for the primaries, the largest field of presidential primary candidates for any American political party since the modern primaries began in 1972, exceeding the field of 17 major candidates in the 2016 Republican Party presidential primaries.

Other individuals who were included in national Democratic primary polls but did not run for the 2020 nomination included Stacey Abrams, Michael Avenatti, Sherrod Brown, Hillary Clinton, Mark Cuban, Andrew Cuomo, Al Franken, Eric Garcetti, Eric Holder, Tim Kaine, Jason Kander, Joe Kennedy III, John Kerry, Mitch Landrieu, Terry McAuliffe, Chris Murphy, Gavin Newsom, Michelle Obama, Howard Schultz, Oprah Winfrey, and Mark Zuckerberg.

Polling aggregation The following graph depicts the standing of each candidate in the poll aggregators from December 2018 to April 2020.

2020

April–August 2020 +April–August 2020 polling Poll sourceDate(s)administeredSamplesizeMargin Joe Biden Bernie Sanders Someone else Would not vote Undecided August 20 Democratic National Convention endsYouGov/EconomistYouGov/EconomistAug 16–18, 2020559 (LV) –59%33% – –7% August 11 Connecticut primaryYouGov/EconomistYouGov/EconomistAug 9–11, 2020587 (LV) –59%33% – –8%YouGov/EconomistYouGov/EconomistAug 2–4, 2020527 (LV) –61%32% – –7%YouGov/EconomistYouGov/EconomistJul 26–28, 2020576 (LV) –60%33% – –7%YouGov/EconomistYouGov/EconomistJul 19–21, 2020557 (LV) –61%32% – –7%YouGov/EconomistYouGov/EconomistJul 12–14, 2020598 (LV) –58%35% – –8% July 12 Puerto Rico primary July 11 Louisiana primary July 7 Delaware and New Jersey primariesYouGov/EconomistYouGov/EconomistJul 5–7, 2020559 (LV) –57%34% – –10%YouGov/EconomistYouGov/EconomistJun 28–30, 2020605 (LV) –59%34% – –7% June 23 Kentucky and New York primariesYouGov/EconomistYouGov/EconomistJun 21–23, 2020561 (LV) –57%37% – –6%YouGov/EconomistYouGov/EconomistJun 14–16, 2020541 (LV) –60%33% – –7% June 9 Georgia and West Virginia primariesYouGov/EconomistYouGov/EconomistJun 7–9, 2020649 (LV) –56%38% – –7% June 6 Guam and U.S. Virgin Islands caucuses June 5 Biden secures a majority of pledged delegates and becomes the presumptive Democratic nominee June 2 District of Columbia, Indiana, Maryland, Montana, New Mexico, Pennsylvania, Rhode Island and South Dakota Democratic primariesYouGov/EconomistYouGov/EconomistMay 31–Jun 2589 (LV) –60%33% – –7%Zogby/EMI/Washington ExaminerZogby/EMI/Washington ExaminerMay 26< 1000 (LV) –55% –37% – – May 22 Hawaii primary May 19 Oregon primaryYouGov/EconomistYouGov/EconomistMay 17–19581 (LV) –62%33% – –5% May 12 Nebraska primaryYouGov/EconomistYouGov/EconomistMay 10–12602 (LV) – 57%36% – – 7%Rasmussen ReportsRasmussen Reports May 10–11 < 1000 (LV) –54% –28% –18%YouGov/EconomistYouGov/EconomistMay 3–5547 (LV) – 55%37% – – 7%Morning ConsultMay 2–3737 (RV)± 4%61% –26% –13% May 2 Kansas primary Apr 28 Ohio primaryWinston GroupWinston Group Apr 27–28 ≈670 (RV) –54%17%2%18%8%YouGov/EconomistYouGov/Economist Apr 26–28563 (LV) – 59%32% – – 9%Emerson CollegeEmerson College Apr 26–28479 (RV) – 68%24%3%2%7%YouGov/EconomistYouGov/Economist Apr 19–21 544 (LV) – 60% 34% – – 6% Apr 17 Wyoming caucusesYouGov/EconomistYouGov/Economist Apr 12–14 586 (LV) – 49% 31% 18% – 2% Apr 10 Alaska primaryZogby AnalyticsZogby Analytics Apr 8–9 679 (LV) ± 3.8%61% – 30% – 9% Apr 8 Sanders withdraws from the race Apr 7 Wisconsin primaryYouGov/EconomistYouGov/Economist Apr 5–7 586 (LV) – 49% 28% 18% – 5%CNN/SSRSCNN/SSRS Apr 3–6 462 (RV) ± 5.6%65% 30% 1% – 5%Morning ConsultMorning Consult Mar 30–Apr 5 13,346 (LV) ± 1.0%61% 36% 3% – –Winston GroupWinston Group Apr 1–3 ≈670 (RV) –48%27%2%14%10%IBD/TIPPIBD/TIPP Mar 29–Apr 1 447 (RV) – 62% 30% 3% – 5%

March 2020 +March 2020 polling Poll sourceDate(s)administeredSamplesizeMargin Joe Biden Bernie Sanders Tulsi Gabbard Someone else Would not vote UndecidedYouGov/EconomistYouGov/Economist Mar 29–31 573 (LV) –47% 34% – 15% – 4%HarrisX/The HillHarrisX/The Hill Mar 29–30 425 (RV) ± 4.7%54% 32% – 5% – 10%Morning ConsultMorning Consult Mar 23–29 15,101 (LV) ± 1.0%61% 36% – 3% – –Harvard-HarrisHarvard-Harris Mar 24–26 903 (RV) – 58% 32% – – 1% 9%ABC/Washington PostABC/Washington Post Mar 22–25 388 (RV) ± 5.5%55% 39% – 2% 5% 1%YouGov/EconomistYouGov/Economist Mar 22–24 545 (LV) –47% 34% – 16% – 3%Echelon InsightsEchelon Insights Mar 20–24490 (LV) –66%29% – – – –Ipsos/ReutersIpsos/Reuters Mar 18–24 1,981 (A) ± 2.5%53% 34% 2% 2%% 0% 8%Morning ConsultMorning Consult Mar 16–22 16,180 (LV) ± 1.0%60% 36% – 5% – – Mar 19 Gabbard withdraws from the raceEmerson CollegeEmerson College Mar 18–19 519 (LV) ± 4.3%54% 42% – 4% – – Mar 17 Arizona, Florida, and Illinois primariesYouGov/EconomistYouGov/Economist Mar 15–17 551 (LV) – 48% 32% – 13% – 6%Ipsos/ReutersIpsos/Reuters Mar 13–16 458 (RV) ± 5.2%48% 39% 2% 2% 0% 8% Mar 15 Eleventh Democratic primary debateHarrisX/The HillHarrisX/The Hill Mar 14–15 894 (RV) ± 3.3%55% 31% 4% 3% – 7% Mar 14 Northern Mariana Islands Democratic caucusMorning ConsultMorning Consult Mar 11–15 8,869 (LV) ± 1.0%58% 37% 3% 3% –Winston GroupWinston Group Mar 11–13 ≈670 (RV) –50%24%4%1%12%9%NBC/WSJNBC/WSJ Mar 11–13 438 (LV) ± 4.68%61% 32% 4% – 1% 2%Hofstra UniversityHofstra University Mar 5–12 572 (LV) ± 2.9%58% 35% 2% 5% – –Morning ConsultMorning Consult Mar 11 2,072 (LV) ± 2.0%59% 35% 3% 3% – – Mar 11 COVID-19 declared a pandemic by the World Health Organization; national emergency declared on Mar 13 Mar 10 Democrats Abroad, Idaho, Michigan, Mississippi, Missouri, North Dakota, and Washington primariesYouGov/EconomistYouGov/Economist Mar 8–10 573 (LV) – 53% 38% 2% – 1% 6%Chism StrategiesChism Strategies Mar 9 840 (LV) ± 3.38%50% 42% 4% – 5%HarrisX/The HillHarrisX/The Hill Mar 8–9 442 (RV) ± 4.6%55% 28% 5% 4% – 8%Ipsos/ReutersIpsos/Reuters Mar 6–9 420 (RV) ± 5.5%54% 33% 2% 3% 0% 8%Morning ConsultMorning Consult Mar 5–8 9,593 (LV) ± 1.0%56% 38% 3% 3% – –Quinnipiac UniversityQuinnipiac University Mar 5–8 559 (RV) ± 4.2%54% 35% 2% 1% – 8% CNN/SSRSCNN/SSRS Mar 4–7 540 (RV) ± 5%52% 36% – 8% – 4%Morning ConsultMorning Consult Mar 5 1,390 (LV) ± 3.0%54% 38% 2% 6% – –

+ Poll sourceDate(s)administeredSamplesizeMargin Mar 5 Warren withdraws from the raceIpsos/ReutersIpsos/Reuters Mar 4–5 474 (RV) ± 5.1%45% – –1% –32% –11%4%0%7% Mar 4 Bloomberg withdraws from the race Mar 3 Super TuesdayMorning ConsultMorning ConsultMar 2–3961 (LV)± 4.0%36%19% – – –28% –14%3% – –YouGov/EconomistYouGov/EconomistMar 1–3 722 (LV) –28%11%7%2%4%24% –19% – – – Mar 2 Klobuchar withdraws from the raceHarrisX/The HillHarrisX/The HillMar 1–2453 (RV)± 4.6%28%20% –2%3%23% –11%2% –10%Ipsos/ReutersIpsos/ReutersFeb 28 – Mar 2469 (RV) –15%14%10%1%4%24%2%9%2%4%14% Mar 1 Buttigieg withdraws from the raceMorning ConsultMorning ConsultMar 12,656 (LV)± 2.0%26%17%10% –3%29%1%11% – – –

February 2020