This is a list of nationwide public opinion polls that have been conducted relating to the Democratic primaries for the 2016 United States presidential election.
The persons named in the polls are declared candidates, are former candidates, or have received media speculation about their possible candidacy.
In the following tables, blue indicates the highest percentage and percentages within the margin of error of the highest in each poll.
Source of aggregate poll | Date updated | Date polled | Method | Hillary Clinton | Bernie Sanders | Others / Undecided |
---|---|---|---|---|---|---|
FiveThirtyEight Average | June 24, 2016 | February 25 – June 29, 2016 | Weighted | 54.1% | 37.4% | 8.5% |
HuffPost Pollster Model | June 24, 2016 | — | — | 53.8% | 39.3% | 6.9% |
RealClear Politics Average | June 24, 2016 | May 13–June 5, 2016 | Average of last 5 polls | 52.8% | 41.4% | 5.8% |
270 to Win Average | June 24, 2016 | May 13–June 6, 2016 | Average of last 3 polls | 52.0% | 38.0% | 10.0% |
Poll source | Sample size | Margin of error | Date(s) administered | Hillary Clinton | Bernie Sanders | Others / Undecided |
---|---|---|---|---|---|---|
YouGov/Economist | 390 | June 18–20, 2016 | 55% | 42% | 4% | |
Morning Consult | 1,733 | 2.0% | June 15–20, 2016 | 53% | 35% | 12% |
NBC/SurveyMonkey | 3,092 | 1.3% | June 6–12, 2016 | 58% | 36% | 6% |
YouGov | 698 | June 2–5, 2016 | 52% | 41% | 7% | |
Morning Consult | 1,811 | 2.3% | June 1–5, 2016 | 51% | 38% | 11% |
IBD/TIPP | 351 | 5.3% | May 31 – June 5, 2016 | 51% | 37% | 12% |
NBC/SurveyMonkey | 4,332 | 2.0% | May 30 – June 5, 2016 | 53% | 40% | 7% |
Ipsos/Reuters | 850 | 3.4% | May 28 – June 1, 2016 | 44% | 44% | 12% |
Quinnipiac | 678 | 3.8% | May 24–30, 2016 | 53% | 39% | 8% |
Morning Consult | 1,859 | 2.3% | May 24–30, 2016 | 46% | 42% | 12% |
NBC/SurveyMonkey | 4,227 | 2.0% | May 23–29, 2016 | 53% | 42% | 5% |
Ipsos/Reuters | 800 | 2.8% | May 21–25, 2016 | 44% | 43% | 13% |
YouGov/Economist | 711 | 3.1% | May 20–23, 2016 | 52% | 41% | 7% |
Morning Consult | 975 | 1.0% | May 19–23, 2016 | 48% | 42% | 10% |
NBC/SurveyMonkey | 4,888 | 1.0% | May 16–22, 2016 | 51% | 42% | 7% |
ABC News/Washington Post | 829 | 3.5% | May 16–19, 2016 | 56% | 42% | 2% |
Ipsos/Reuters | 868 | 2.7% | May 14–18, 2016 | 44% | 43% | 13% |
NBC/SurveyMonkey | 4,348 | 2.0% | May 9–15, 2016 | 54% | 40% | 6% |
Morning Consult | 1,855 | 2.3% | May 11–15, 2016 | 47% | 41% | 12% |
Ipsos/Reuters | 819 | 2.8% | May 7–11, 2016 | 46% | 44% | 10% |
Morning Consult | 2,728 | 1.9% | May 5–9, 2016 | 49% | 40% | 11% |
NBC/SurveyMonkey | 3,905 | 2.0% | May 2–8, 2016 | 53% | 41% | 6% |
Ipsos/Reuters | 679 | 3.1% | April 30 – May 4, 2016 | 47% | 40% | 13% |
Morning Consult | 948 | 3.2% | April 29 – May 2, 2016 | 51% | 38% | 11% |
CNN/ORC | 405 | 5.0% | April 28 – May 1, 2016 | 51% | 43% | 6% |
NBC/SurveyMonkey | 4,418 | 1.9% | April 25 – May 1, 2016 | 54% | 40% | 6% |
Morning Consult | 906 | 3.2% | April 26–29, 2016 | 49% | 40% | 11% |
IBD/TIPP | 355 | 5.3% | April 22–28, 2016 | 49% | 43% | 8% |
Ipsos/Reuters | 1,062 | 3.0% | April 23–27, 2016 | 47% | 42% | 11% |
YouGov/Economist | 635 | 2.8% | April 22–26, 2016 | 47% | 43% | 10% |
Suffolk University/USA Today | 363 | 5.1% | April 20–24, 2016 | 50.4% | 44.9% | 4.7% |
NBC/SurveyMonkey | 10,707 | 1.4% | April 18–24, 2016 | 52% | 42% | 6% |
Morning Consult | 929 | 2.0% | April 20–22, 2016 | 48% | 42% | 10% |
Ipsos/Reuters | 835 | 2.8% | April 16–20, 2016 | 43% | 42% | 15% |
Pew Research | 738 | - | April 12–19, 2016 | 54% | 42% | 4% |
Morning Consult | 941 | 2% | April 15–17, 2016 | 46% | 43% | 11% |
NBC/SurveyMonkey | 3,821 | 1.3% | April 11–17, 2016 | 50% | 43% | 7% |
NBC/Wall Street Journal | 339 | 5.3% | April 10–14, 2016 | 50% | 48% | 2% |
FOX News | 450 | 3.0% | April 11–13, 2016 | 48% | 46% | 6% |
Ipsos/Reuters | 849 | 2.7% | April 9–13, 2016 | 42% | 47% | 11% |
CBS News | 359 | 3.0% | April 8–12, 2016 | 50% | 44% | 6% |
YouGov/Economist | 684 | 2.8% | April 8–11, 2016 | 49% | 41% | 10% |
NBC/SurveyMonkey | 3,746 | 1.3% | April 4–10, 2016 | 49% | 43% | 8% |
Ipsos/Reuters | 781 | 2.9% | April 2–6, 2016 | 38% | 44% | 18% |
Morning Consult | 884 | 2% | April 1–3, 2016 | 47% | 39% | 14% |
Public Religion Research Institute/The Atlantic | 788 | N/A | March 30 – April 3, 2016 | 46% | 47% | 7% |
NBC News/SurveyMonkey | 4,292 | 1.8% | March 28 – April 3, 2016 | 51% | 42% | 7% |
IBD/TIPP | 388 | 5.1% | March 28 – April 2, 2016 | 45% | 44% | 11% |
McClatchy/Marist | 497 | 4.4% | March 29–31, 2016 | 47% | 49% | 4% |
Ipsos/Reuters | 788 | 2.8% | March 27–31, 2016 | 46% | 43% | 11% |
YouGov/Economist | 651 | 2.8% | March 26–29, 2016 | 53% | 40% | 7% |
NBC/SurveyMonkey | 1,922 | 2.9% | March 21–27, 2016 | 49% | 43% | 8% |
Pew Research | 842 | 2.4% | March 17–27, 2016 | 49% | 43% | 8% |
Morning Consult | 2,071 | 2.0% | March 24–26, 2016 | 50% | 39% | 11% |
Public Policy Polling | 505 | 4.4% | March 24–26, 2016 | 54% | 36% | 10% |
Ipsos/Reuters | 788 | 2.8% | March 19–23, 2016 | 42% | 47% | 12% |
McLaughlin & Associates | 470 | 3.1% | March 17–23, 2016 | 50.2% | 38.3% | 11.5% |
Fox News | 410 | 5.0% | March 20–22, 2016 | 55% | 42% | 3% |
Bloomberg/Selzer & Co. | 311 | 5.6% | March 19–22, 2016 | 48% | 49% | 3% |
Morning Consult | 2,001 | 2% | March 18–21, 2016 | 51% | 39% | 11% |
Quinnipiac | 635 | 3.9% | March 16–21, 2016 | 50% | 38% | 12% |
CBS/NYT | 388 | 6% | March 17–20, 2016 | 50% | 45% | 5% |
CNN/ORC | 397 | 5.0% | March 17–20, 2016 | 51% | 44% | 5% |
Monmouth | 391 | 5.0% | March 17–20, 2016 | 55% | 37% | 8% |
NBC/SurveyMonkey | 11,600 | 1.4% | March 14–20, 2016 | 53% | 41% | 6% |
Morning Consult | 2,011 | 2.0% | March 16–18, 2016 | 49% | 40% | 11% |
Ipsos/Reuters | 832 | 2.7% | March 12–16, 2016 | 44% | 44% | 12% |
Morning Consult | 1842 | 2.0% | March 11–13, 2016 | 48% | 40% | 12% |
NBC/SurveyMonkey | 2,597 | 1.7% | March 7–13, 2016 | 54% | 41% | 5% |
YouGov | 400 | 2.9% | March 10–12, 2016 | 52% | 40% | 8% |
Ipsos/Reuters | 955 | 2.6% | March 5–9, 2016 | 46% | 39% | 16% |
Morning Consult | 960 | 2.0% | March 4–6, 2016 | 52% | 36% | 12% |
NBC News/Wall Street Journal | 410 | 4.8% | March 3–6, 2016 | 53% | 44% | 3% |
ABC News/Wash Post | 356 | 5.5% | March 3–6, 2016 | 49% | 42% | 9% |
NBC/SurveyMonkey | 6,245 | 1.1% | February 29 – March 6, 2016 | 55% | 38% | 7% |
Ipsos/Reuters | 839 | 4.3% | February 27 – March 2, 2016 | 47% | 40% | 13% |
NBC/SurveyMonkey | 8,702 | 1.7% | February 22–28, 2016 | 51% | 41% | 9% |
Rasmussen Reports | 541 | 4.5% | February 22–28, 2016 | 53% | 31% | Other 9% Undecided 6% |
Morning Consult | 891 | 2.0% | February 26–27, 2016 | 51% | 35% | 14% |
CNN/ORC | 427 | 5.0% | February 24–27, 2016 | 55% | 38% | 7% |
YouGov | 535 | 2.9% | February 24–27, 2016 | 55% | 37% | 8% |
Morning Consult | 1,723 | 2% | February 24–25, 2016 | 50% | 35% | 15% |
NBC News / SurveyMonkey | 2,092 | 3% | February 24–25, 2016 | 52% | 41% | 7% |
Ipsos/Reuters | 753 | 4.4% | February 20–24, 2016 | 42% | 44% | 14% |
IBD/TIPP | 334 | 5.5% | February 19–24, 2016 | 45% | 43% | 12% |
NBC/SurveyMonkey | 3,338 | 1.8% | February 15–21, 2016 | 51% | 40% | Others / Undecided 9% |
McLaughlin & Associates | 1,000 | 3.1% | February 17, 2016 | 42.5% | 42.6% | Undecided 14.9% |
Fox News | 429 | 4.5% | February 15–17, 2016 | 44% | 47% | Other 1% None of the above 1% Don't know 7% |
Ipsos/Reuters | 737 | 4% | February 13–17, 2016 | 45% | 42% | Wouldn't vote 14% |
Morning Consult | 829 | 2% | February 15–16, 2016 | 47% | 39% | Someone else 5% Undecided 9% |
NBC News/Wall Street Journal | 400 | 4.9% | February 14–16, 2016 | 53% | 42% | Not sure 4% None 1% |
CBS News | 549 | 5% | February 12–16, 2016 | 47% | 39% | Don't know 10% |
YouGov/Economist | 527 | 2.8% | February 11–15, 2016 | 53% | 39% | Other 2% No Preference 6% |
Suffolk University/USA Today | 319 | 5.5% | February 11–15, 2016 | 53% | 40% | Undecided 10% |
Quinnipiac University | 563 | 4.1% | February 10–15, 2016 | 44% | 42% | Wouldn't vote 2% Don't know/NA 11% |
NBC/SurveyMonkey | 3,847 | 1.8% | February 8–14, 2016 | 50% | 40% | Don't know 8% No answer 1% |
Morning Consult | 811 | 3.4% | February 10–11, 2016 | 46% | 39% | Other 8% Undecided 7% |
Ipsos/Reuters | 600 | 2.8% | February 6–10, 2016 | 55% | 43% | Undecided 3% |
Morning Consult | 1988 | 1% | February 3–7, 2016 | 50% | 37% | Undecided 8% |
NBC/SurveyMonkey | 3154 | 1.4% | February 1–7, 2016 | 51% | 39% | Undecided 8% No answer 1% |
Ipsos/Reuters | 512 | 5% | February 2–5, 2016 | 48% | 45% | Other 5% |
Rasmussen Reports | 574 | 4.5% | February 3–4, 2016 | 50% | 32% | Other 12% Undecided 6% |
Quinnipiac University | 484 | 4.5% | February 2–4, 2016 | 44% | 42% | Other 1% Wouldn't vote 2% Don't know/NA 1% |
Public Policy Polling | 517 | 4.3% | February 2–3, 2016 | 53% | 32% | Undecided 14% |
Morning Consult | 719 | 3.6% | February 2–3, 2016 | 51% | 35% | Other 6% Don't know/No opinion 8% |
Poll source | Sample size | Margin of error | Date(s) administered | Hillary Clinton | Martin O'Malley | Bernie Sanders | Others |
---|---|---|---|---|---|---|---|
Ipsos/Reuters | 704 | 4.2% | January 30, 2016 – February 3, 2016 | 54% | 2% | 39% | Wouldn't vote 5% |
Morning Consult | 1928 | 2.2% | January 29, 2016 – February 1, 2016 | 50% | 5% | 34% | Other 5% Don't know/No opinion 9% |
NBC/SurveyMonkey | 3233 | 2.3% | January 25–31, 2016 | 50% | 2% | 39% | Don't know 8% No answer 1% |
YouGov/Economist | 531 | 2.9% | January 27–30, 2016 | 52% | 2% | 40% | N/A |
Ipsos/Reuters | 231 | 7% | January 25–29, 2016 | 58% | 3% | 38% | Other 2% |
IBD/TIPP | 378 | 5.1% | January 22–27, 2016 | 50% | 2% | 38% | Other / Undecided 10% |
CNN / ORC | 440 | 4.5% | January 21–24, 2016 | 52% | 2% | 38% | Other 8% |
Washington Post / ABC News | 406 | 5.5% | January 21–24, 2016 | 55% | 4% | 36% | Other 5% |
Fox News | 375 | 5% | January 18–21, 2016 | 49% | 1% | 37% | Other 1% None of the above 2% Don't know 10% |
Zogby | 373 | N/A | January 19–20, 2016 | 49% | 10% | 27% | Undecided 14% |
Ipsos/Reuters | 629 | 2.8% | January 16–20, 2016 | 54% | 4% | 35% | Wouldn't vote 7% |
YouGov/Economist | 2000 | 2.9% | January 15–19, 2016 | 50% | 2% | 41% | N/A |
Monmouth University | 352 | 5.4% | January 15–18, 2016 | 52% | 2% | 37% | Other 0% No one 4% Undecided 4% |
NBC News/Wall Street Journal | 400 | 4.9% | January 9–13, 2016 | 59% | 2% | 34% | N/A |
New York Times/CBS News | 389 | 6% | January 7–10, 2016 | 48% | 2% | 41% | None of them 3% Don't know/No answer 6% |
NBC/SurveyMonkey | 2619 | 2.4% | January 4–10, 2016 | 52% | 2% | 37% | Don't know 8% No answer 1% |
IBD/TIPP | 378 | 5.1% | January 4–8, 2016 | 43% | 2% | 39% | Other 6% Undecided 9% Refused 1% |
Fox News | 360 | 5% | January 4–7, 2016 | 54% | 3% | 39% | Other 1% None of the above 1% Unsure 2% |
Ipsos/Reuters | 709 | 4.2% | January 2–6, 2016 | 58% | 3% | 30% | Wouldn't Vote 9% |
YouGov/Economist | 533 | 2.8% | December 31, 2015 – January 6, 2016 | 54% | 3% | 37% | No preference 4% Other 1% |
NBC/SurveyMonkey | 3,700 | 1.9% | December 28, 2015 – January 3, 2016 | 53% | 2% | 36% | Undecided 8% No Answer 1% |
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