Nationwide opinion polling for the 2020 Democratic Party presidential primaries

|+April–August 2020 polling

! Poll source

! style="width:90px;"|Date(s)
administered

! style="width:90px;"|Sample
size{{efn|name=key|Key:
A – all adults
RV – registered voters
LV – likely voters
V – unclear}}

! style="width:50px;"|Margin
{{nowrap|of error}}

! style="width:90px; | Joe
Biden

! style="width:90px; | Bernie
Sanders

! Someone
else

! Would
not vote

! Undecided

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

| style="border-right-style:hidden;"| August 20

| colspan="10" | Democratic National Convention ends

|Aug 16–18, 2020

|559 (LV)

| –

|{{party shading/Democratic}}|59%

|33%

| –

| –

|7%

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

| style="border-right-style:hidden;"| August 11

| colspan="10" | Connecticut primary

|Aug 9–11, 2020

|587 (LV)

| –

|{{party shading/Democratic}}|59%

|33%

| –

| –

|8%

|Aug 2–4, 2020

|527 (LV)

| –

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

|32%

| –

| –

|7%

|Jul 26–28, 2020

|576 (LV)

| –

|{{party shading/Democratic}}|60%

|33%

| –

| –

|7%

|Jul 19–21, 2020

|557 (LV)

| –

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

|32%

| –

| –

|7%

|Jul 12–14, 2020

|598 (LV)

| –

|{{party shading/Democratic}}|58%

|35%

| –

| –

|8%

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

| style="border-right-style:hidden;"| July 12

| colspan="10" | Puerto Rico primary

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

| style="border-right-style:hidden;"| July 11

| colspan="10" | Louisiana primary

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

| style="border-right-style:hidden;"| July 7

| colspan="10" | Delaware and New Jersey primaries

|Jul 5–7, 2020

|559 (LV)

| –

|{{party shading/Democratic}}|57%

|34%

| –

| –

|10%

|Jun 28–30, 2020

|605 (LV)

| –

|{{party shading/Democratic}}|59%

|34%

| –

| –

|7%

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

| style="border-right-style:hidden;"| June 23

| colspan="10" | Kentucky and New York primaries

|Jun 21–23, 2020

|561 (LV)

| –

|{{party shading/Democratic}}|57%

|37%

| –

| –

|6%

|Jun 14–16, 2020

|541 (LV)

| –

|{{party shading/Democratic}}|60%

|33%

| –

| –

|7%

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

| style="border-right-style:hidden;"| June 9

| colspan="10" | Georgia and West Virginia primaries

|Jun 7–9, 2020

|649 (LV)

| –

|{{party shading/Democratic}}|56%

|38%

| –

| –

|7%

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

| style="border-right-style:hidden;"| June 6

| colspan="10" | Guam and U.S. Virgin Islands caucuses

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

| style="border-right-style:hidden;"| June 5

| colspan="10" | Biden secures a majority of pledged delegates and becomes the presumptive Democratic nominee

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

| style="border-right-style:hidden;"| June 2

| colspan="10" | District of Columbia, Indiana, Maryland, Montana, New Mexico, Pennsylvania, Rhode Island and South Dakota Democratic primaries

|May 31–Jun 2

|589 (LV)

| –

|{{party shading/Democratic}}|60%

|33%

| –

| –

|7%

|May 26{{efn|name=538.com}}

|< 1000 (LV){{efn|Democratic subsample not yet released}}

| –

|{{party shading/Democratic}}|55%

| –

|37%

| –

| –

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

| style="border-right-style:hidden;"| May 22

| colspan="10" | Hawaii primary

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

| style="border-right-style:hidden;"| May 19

| colspan="10" | Oregon primary

|May 17–19

|581 (LV)

| –

|{{party shading/Democratic}}|62%

|33%

| –

| –

|5%

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

| style="border-right-style:hidden;"| May 12

| colspan="10" | Nebraska primary

|May 10–12

|602 (LV)

| –

|{{party shading/Democratic}}|57%

|36%

| –

| –

|7%

| May 10–11

| < 1000 (LV){{efn|"Likely Democratic" sample not yet released}}

| –

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

| –

|28%

| –

|18%

|May 3–5

|547 (LV)

| –

|{{party shading/Democratic}}|55%

|37%

| –

| –

|7%

|May 2–3

|737 (RV)

|± 4%

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

| –

|26%{{efn|"The Democrats should probably or definitely select another nominee" with 26%}}

| –

|13%

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

| style="border-right-style:hidden;"| May 2

| colspan="10" | Kansas primary

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

| style="border-right-style:hidden;"| Apr 28

| colspan="10" | Ohio primary

| Apr 27–28

| ≈670 (RV){{efn|name="671kRV"|67% (rounded to the nearest integer) of a sample of 1000 RVs}}

| –

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

|17%

|2%

|18%

|8%

| Apr 26–28

|563 (LV)

| –

|{{party shading/Democratic}}|59%

|32%

| –

| –

|9%

| Apr 26–28

|479 (RV)

| –

|{{party shading/Democratic}}|68%

|24%

|3%

|2%{{efn|Listed as "did not vote" in the context of polling a sample of primary voters including those in states with primaries that had already been held before the sampling period}}

|7%

| Apr 19–21

| 544 (LV)

| –

| {{party shading/Democratic}}|60%

| 34%

| –

| –

| 6%

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

| style="border-right-style:hidden;"| Apr 17

| colspan="10" | Wyoming caucuses

| Apr 12–14

| 586 (LV)

| –

|{{party shading/Democratic}}|49%

| 31%

| 18%

| –

| 2%

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

| style="border-right-style:hidden;"| Apr 10

| colspan="10" | Alaska primary

| Apr 8–9

| 679 (LV)

| ± 3.8%

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

| –

| 30%{{efn|Andrew Cuomo with 19%; "someone else" with 11%}}

| –

| 9%

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

| style="border-right-style:hidden;"| Apr 8

| colspan="10" | Sanders withdraws from the race

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

| style="border-right-style:hidden;"| Apr 7

| colspan="10" | Wisconsin primary

| Apr 5–7

| 586 (LV)

| –

|{{party shading/Democratic}}|49%

| 28%

| 18%

| –

| 5%

| Apr 3–6

| 462 (RV)

| ± 5.6%

|{{party shading/Democratic}}|65%

| 30%

| 1%

| –

| 5%

| Mar 30–Apr 5

| 13,346 (LV)

| ± 1.0%

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

| 36%

| 3%

| –

| –

| Apr 1–3

| ≈670 (RV){{efn|name="671kRV"}}

| –

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

|27%

|2%

|14%

|10%

| Mar 29–Apr 1

| 447 (RV)

| –

|{{party shading/Democratic}}|62%

| 30%

| 3%

| –

| 5%

|+March 2020 polling

! Poll source

! style="width:90px;"|Date(s)
administered

! style="width:90px;"|Sample
size{{efn|name=key}}

! style="width:50px;"|Margin
{{nowrap|of error}}

! style="width:90px; | Joe
Biden

! style="width:90px; | Bernie
Sanders

! style="width:90px; | Tulsi
Gabbard

! Someone
else

! Would
not vote

! Undecided

| Mar 29–31

| 573 (LV)

| –

|{{party shading/Democratic}}|47%

| 34%

| –

| 15%

| –

| 4%

| Mar 29–30

| 425 (RV)

| ± 4.7%

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

| 32%

| –

| 5%

| –

| 10%

| Mar 23–29

| 15,101 (LV)

| ± 1.0%

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

| 36%

| –

| 3%

| –

| –

| Mar 24–26

| 903 (RV)

| –

|{{party shading/Democratic}}|58%

| 32%

| –

| –

| 1%

| 9%

| Mar 22–25

| 388 (RV)

| ± 5.5%

|{{party shading/Democratic}}|55%

| 39%

| –

| 2%

| 5%{{efn|"Neither" [Biden nor Sanders] with 3%, reported separately from "Other" with 2%}}

| 1%

| Mar 22–24

| 545 (LV)

| –

|{{party shading/Democratic}}|47%

| 34%

| –

| 16%

| –

| 3%

| Mar 20–24

|490 (LV)

| –

|{{party shading/Democratic}}|66%

|29%

| –

| –

| –

| –

| Mar 18–24

| 1,981 (A)

| ± 2.5%

|{{party shading/Democratic}}|53%

| 34%

| 2%

| 2%%

| 0%

| 8%

| Mar 16–22

| 16,180 (LV)

| ± 1.0%

|{{party shading/Democratic}}|60%

| 36%

| –

| 5%

| –

| –

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

| style="border-right-style:hidden;"| Mar 19

| colspan="10" | Gabbard withdraws from the race

| Mar 18–19

| 519 (LV)

| ± 4.3%

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

| 42%

| –

| 4%

| –

| –

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

| style="border-right-style:hidden;"| Mar 17

| colspan="10" | Arizona, Florida, and Illinois primaries

| Mar 15–17

| 551 (LV)

| –

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

| 32%

| –

| 13%

| –

| 6%

| Mar 13–16

| 458 (RV)

| ± 5.2%

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

| 39%

| 2%

| 2%

| 0%

| 8%

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

| style="border-right-style:hidden;"| Mar 15

| colspan="10" | Eleventh Democratic primary debate

| Mar 14–15

| 894 (RV)

| ± 3.3%

|{{party shading/Democratic}}|55%

| 31%

| 4%

| 3%

| –

| 7%

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

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

| colspan="10" | Northern Mariana Islands Democratic caucus

| Mar 11–15

| 8,869 (LV)

| ± 1.0%

|{{party shading/Democratic}}|58%

| 37%

| 3%

| 3%

| –

| Mar 11–13

| ≈670 (RV){{efn|name="671kRV"}}

| –

|{{party shading/Democratic}}|50%

|24%

|4%

|1%

|12%

|9%

| Mar 11–13

| 438 (LV)

| ± 4.68%

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

| 32%

| 4%

| –

| 1%

| 2%

| Mar 5–12

| 572 (LV)

| ± 2.9%

| {{party shading/Democratic}} |58%

| 35%

| 2%

| 5%

| –

| –

| Mar 11

| 2,072 (LV)

| ± 2.0%

| {{party shading/Democratic}} |59%

| 35%

| 3%

| 3%

| –

| –

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

| style="border-right-style:hidden;"| Mar 11

| colspan="10" | COVID-19 declared a pandemic by the World Health Organization; national emergency declared on Mar 13

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

| style="border-right-style:hidden;"| Mar 10

| colspan="10" | Democrats Abroad, Idaho, Michigan, Mississippi, Missouri, North Dakota, and Washington primaries

| Mar 8–10

| 573 (LV)

| –

|{{party shading/Democratic}}|53%

| 38%

| 2%

| –

| 1%

| 6%

| Mar 9

| 840 (LV)

| ± 3.38%

|{{party shading/Democratic}}|50%

| 42%

| colspan=2 | 4%

| –

| 5%

| Mar 8–9

| 442 (RV)

| ± 4.6%

|{{party shading/Democratic}}|55%

| 28%

| 5%

| 4%

| –

| 8%

| Mar 6–9

| 420 (RV)

| ± 5.5%

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

| 33%

| 2%

| 3%

| 0%

| 8%

| Mar 5–8

| 9,593 (LV)

| ± 1.0%

|{{party shading/Democratic}}|56%

| 38%

| 3%

| 3%

| –

| –

| Mar 5–8

| 559 (RV)

| ± 4.2%

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

| 35%

| 2%

| 1%

| –

| 8%

| Mar 4–7

| 540 (RV)

| ± 5%

|{{party shading/Democratic}}|52%

| 36%

| –

| 8%{{efn|Warren with 7%; Someone else with 1%}}

| –

| 4%

| Mar 5

| 1,390 (LV)

| ± 3.0%

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

| 38%

| 2%

| 6%

| –

| –

|+

! style="background-position: right 85%;" | Poll source

! style="width:90px; background-position: right 85%;"|Date(s)
administered

! style="width:90px; background-position: right 85%;"|Sample
size{{efn|name=key}}

! style="width:50px; background-position: right 85%;"|Margin
{{nowrap|of error}}

! {{vert header|stp=1|Joe Biden}}

! {{vert header|stp=1|Michael Bloomberg}}

! {{vert header|stp=1|Pete Buttigieg}}

! {{vert header|stp=1|Tulsi Gabbard}}

! {{vert header|stp=1|Amy Klobuchar}}

! {{vert header|stp=1|Bernie Sanders}}

! {{vert header|stp=1|Tom Steyer}}

! {{vert header|stp=1|Elizabeth Warren}}

! {{vert header|stp=1|mw=8|Others}}

! {{vert header|stp=1|Would not vote}}

! {{vert header|stp=1|Undecided}}

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

| style="border-right-style:hidden;"| Mar 5

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

| Mar 4–5

| 474 (RV)

| ± 5.1%

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

| –

| –

|1%

| –

|32%

| –

|11%

|4%

|0%

|7%

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

| style="border-right-style:hidden;"| Mar 4

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

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

| style="border-right-style:hidden;"| Mar 3

| colspan="13" | Super Tuesday

|Mar 2–3

|961 (LV)

|± 4.0%

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

|19%

| –

| –

| –

|28%

| –

|14%

|3%

| –

| –

|Mar 1–3

| 722 (LV)

| –

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

|11%

|7%

|2%

|4%

|24%

| –

|19%

| –

| –

| –

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

| style="border-right-style:hidden;"| Mar 2

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

|Mar 1–2

|453 (RV)

|± 4.6%

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

|20%

| –

|2%

|3%

|23%

| –

|11%

|2%

| –

|10%

|Feb 28 – Mar 2

|469 (RV)

| –

|15%

|14%

|10%

|1%

|4%

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

|2%

|9%

|2%

|4%

|14%

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

| style="border-right-style:hidden;"| Mar 1

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

|Mar 1

|2,656 (LV)

|± 2.0%

|26%

|17%

|10%

| –

|3%

|{{party shading/Democratic}}|29%

|1%

|11%

| –

| –

| –

|+February 2020 polling

! style="background-position: right 85%;" | Poll source

! style="width:90px; background-position: right 85%;"|Date(s)
administered

! style="width:90px; background-position: right 85%;"|Sample
size{{efn|name=key}}

! style="width:50px; background-position: right 85%;"|Margin
{{nowrap|of error}}

! {{vert header|stp=1|Joe Biden}}

! {{vert header|stp=1|Michael Bloomberg}}

! {{vert header|stp=1|Pete Buttigieg}}

! {{vert header|stp=1|Tulsi Gabbard}}

! {{vert header|stp=1|Amy Klobuchar}}

! {{vert header|stp=1|Bernie Sanders}}

! {{vert header|stp=1|Tom Steyer}}

! {{vert header|stp=1|Elizabeth Warren}}

! {{vert header|stp=1|Andrew Yang}}

! {{vert header|stp=1|mw=8|Others}}

! {{vert header|stp=1|Would not vote}}

! {{vert header|stp=1|Undecided}}

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

| style="border-right-style:hidden;"| Feb 29

| colspan="16" | South Carolina primary; Steyer withdraws from the race

|Feb 20–29

|325 (RV)

|–

|20%

|13%

|7%

|–{{efn|name="NR"|not reported}}

|6%

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

|–{{efn|name="NR"}}

|17%

| –

| –

| –

| –

|Feb 26–28

|925 (RV)

| –

|20%

|18%

|10%

|1%

|2%

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

|3%

|11%

| –

|1%

|2%

|7%

|Feb 26–27

|5,334 (LV)

|± 1.0%

|21%

|17%

|10%

|2%

|4%

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

|3%

|11%

| –

| –

| –

| –

|Feb 26–27

| –

| –

|21%

|14%

|10%

|1%

|4%

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

|2%

|18%

| –

| –

| –

| –

|Feb 25–27

|821 (LV)

|–

|14%

|8%

|9%

|1%

|3%

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

|2%

|20%

| –

| –

| –

| –

|Feb 25–26

|825 (LV)

|± 3.6%

|21%

|21%

|9%

|1%

|4%

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

|2%

|8%

| –

| –

| –

|5%

|style="text-align:left;"|Fox News[https://www.foxnews.com/politics/fox-news-poll-february-23-26-2020 Fox News]

|Feb 23–26

|1,000 (RV)

|± 4.0%

|18%

|16%

|12%

|1%

|5%

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

|2%

|10%

| –

| –

|1%

|4%

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

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

| colspan="16" | Tenth Democratic primary debate

|Feb 23–25

|584 (LV)

| –

|20%

|11%

|9%

|4%

|4%

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

|1%

|16%

| –

| –

|1%

|4%

|Feb 19–25

|1,808 (RV)

|± 2.6%

|17%

|16%

|11%

|1%

|4%

|{{party shading/Democratic}}|29%

|3%

|12%

| –

|1%

|1%

|6%

|Feb 23–24

|470 (RV)

|± 4.5%

|17%

|19%

|12%

|2%

|3%

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

|3%

|8%

| –

| –{{efn|name=notreleased}}

| –

| 8%

|Feb 23

|2,631 (LV)

|± 2.0%

|18%

|19%

|11%

|2%

|4%

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

|3%

|11%

| –

| –{{efn|name=notreleased}}

| –

| –

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

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

| colspan="16" | Nevada caucuses

|style="text-align:left;"|YouGov/CBS News[https://drive.google.com/file/d/1OpQxzzYY4MXgQMfo2j_XicB_tEUtt7eI/view YouGov/CBS News]

|Feb 20–22

|6,498 (LV)

|± 1.7%

|17%

|13%

|10%

|1%

|5%

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

|2%

|19%

| –

|5%{{efn|"Someone else" with 5%}}

| –

| –{{efn|name="NR"}}

|Feb 17–22

|310 (LV)

|–

|25%

|16%

|6%

|2%

|3%

|{{party shading/Democratic}}|26%

|2%

|9%

| –

| –

| –

| –

|Feb 20

|2,609 (LV)

|± 2.0%

|19%

|17%

|11%

| –{{efn|name=notreleased}}

|5%

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

| –{{efn|name=notreleased}}

|12%

| –

| –{{efn|name=notreleased}}

| –

| –

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

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

| colspan="16" | Ninth Democratic primary debate

|Feb 16–18

|555 (LV)

|± 3.0%

|18%

|12%

|11%

|2%

|7%

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

|2%

|16%

| –

| –

|2%

|5%

|Feb 16–18

|573 (LV)

|± 2.7%

|22%

|14%

|8%

|4%

|6%

|{{party shading/Democratic}}|29%

|3%

|12%

| –

|4%

| –

| –{{efn|name="NR"}}

|style="text-align:left;"|ABC/Wash Post[https://www.langerresearch.com/wp-content/uploads/1211a12020Politics.pdf ABC/Wash Post] {{Webarchive|url=https://web.archive.org/web/20200219144648/https://www.langerresearch.com/wp-content/uploads/1211a12020Politics.pdf |date=February 19, 2020 }}

|Feb 14–17

|408 (RV)

|± 3.5%

|16%

|14%

|8%

|1%

|7%

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

|2%

|12%

| –

| –{{efn|name="NR"}}

| –

| –{{efn|name="NR"}}

|style="text-align:left;"|NBC/WSJ[https://www.nbcnews.com/politics/meet-the-press/nbc-news-wsj-poll-sanders-opens-double-digit-national-lead-n1138191 NBC/WSJ]

|Feb 14–17

|426 (LV)

|± 4.8%

|15%

|14%

|13%

|1%{{efn|name="v538"|via 538.com}}

|7%

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

|2%{{efn|name="v538"}}

|14%

| –

| –{{efn|name="NR"}}

| –

| –{{efn|name="NR"}}

|Feb 14–17

|543 (RV)

|± 5.0%

|13%

|17%

|11%

| –{{efn|name="NR"}}

|5%

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

| –{{efn|name="NR"}}

|9%

| –

| –{{efn|name="NR"}}

| –

| –{{efn|name="NR"}}

|Feb 13–17

|1,022 (LV)

|± 3.3%

|18%

|18%

|12%

| –{{efn|not polled separately}}

|4%

|{{party shading/Democratic}}|29%

|2%

|10%

| –

|1%{{efn|includes Tulsi Gabbard}}

| –

|6%

|Feb 12–17

|15,974 (LV)

|± 1.0%

|19%

|20%

|12%

|2%

|6%

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

|3%

|10%

| –

|1%

| –

| –

|Feb 15–16

| ≈670 (RV){{efn|name="671kRV"}}

| –

|13%

|16%

|9%

|2%

|6%

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

|3%

|9%

| –

|1%{{efn|"Someone else" with 1%}}

|9%

|10%

|style="text-align:left;"|NPR/PBS NewsHour/Marist[http://maristpoll.marist.edu/wp-content/uploads/2020/02/UPDATED_Tuesday-Release_NPR_PBS-NewsHour_Marist-Poll_USA-NOS-and-Tables_2002171446.pdf NPR/PBS NewsHour/Marist]

|Feb 13–16

|1,164 (RV)

|± 3.7%

|15%

|19%

|8%

|0%

|9%

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

|2%

|12%

| –

|0%

| –

|5%

|Feb 14–15

|449 (RV)

|± 4.6%

|19%

|18%

|10%

|0%

|6%

|{{party shading/Democratic}}|22%

|3%

|12%

| –

| –

| –

|8%

|Feb 13–14

|732 (LV)

|± 3.6%

|18%

|20%

|9%

|3%

|5%

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

|4%

|10%

| –

|2%{{efn|"Someone else" with 2%}}

| –

|6%

|Feb 3–14

|437 (RV){{efn|name=538.com}}

| –

|{{party shading/Democratic}}|21.5%

|9.4%

|10.5%

|1.4%

|3.1%

|20.3%

|1.1%

|14.9%

|4.1%

|1.1%{{efn|Patrick with 0.5%; Bennet with 0.4%; Delaney with 0.2%}}

|3.5%

|8.9%

|Feb 12

|2,639 (LV)

|± 2%

|19%

|18%

|11%

| –{{efn|name=notreleased}}

|5%

|{{party shading/Democratic}}|29%

| –{{efn|name=notreleased}}

|10%

| –

| –{{efn|name=notreleased}}

| –

| –

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

| style="border-right-style:hidden;"| Feb 11

| colspan="16" | New Hampshire primary; Yang withdraws from the race

|Feb 9–11

|552 (LV)

| –

|18%

|12%

|10%

|4%

|7%

|{{party shading/Democratic}}|22%

|1%

|15%

|2%

| –

|1%

|6%

|Feb 7–11

|479 (LV)

| –

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

|16%

|11%

|1%

|3%

|21%

|3%

|11%

|3%

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

| –

|7%

|Feb 7–10

|913 (RV)

|± 3.2%

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

|16%

|9%

|1%

|3%

|20%

|3%

|9%

|3%

|3%{{efn|name="BP1SE1"|Bennet and Patrick with 1%; someone else with 1%}}

| –

|11%

|Feb 6–10

|556 (RV)

|± 3.6%

|17%

|15%

|8%

|1%

|3%

| {{party shading/Democratic}} |20%

|2%

|11%

|5%

|2%{{efn|Patrick with 1%; someone else with 1%}}

|3%

|14%

| style="text-align:left;" |Monmouth University[https://www.monmouth.edu/polling-institute/documents/monmouthpoll_us_021120.pdf/ Monmouth University]

|Feb 6–9

| 357 (RV)

| ± 5.2%

|16%

|11%

|13%

|1%

|6%

| {{party shading/Democratic}} |26%

|1%

|13%

|4%

|0%

|2%

|5%

|style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/national/release-detail?ReleaseID=3655 Quinnipiac University]

|Feb 5–9

|665 (RV)

|± 3.8%

|17%

|15%

|10%

|1%

|4%

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

|1%

|14%

|2%

|1%

|1%

|10%

|Feb 4–9

|15,348 (LV)

|± 1%

|22%

|17%

|11%

|1%

|3%

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

|3%

|11%

|4%

|2%{{efn|name="B1SE1"|Bennet with 1%; someone else with 1%}}

|–

|–

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

| style="border-right-style:hidden;"| Feb 7

| colspan="16" | Eighth Democratic primary debate

|Feb 5

|2,500 (LV)

|± 2.0%

|24%

|15%

|12%

| –{{efn|name=notreleased|Not yet released}}

|3%

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

|3%

|11%

|5%

| –{{efn|name=notreleased}}

| –

| –

|Feb 4–5

|891 (LV)

|± 3%

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

|14%

|10%

|2%

|3%

|22%

|3%

|13%

|4%

|1%{{efn|name="B1"|Bennet with 1%}}

| –

|4%

|Feb 2–4

|616 (LV)

| –

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

|9%

|9%

|3%

|6%

|19%

|2%

|18%

|3%

|1%{{efn|name="B1"}}

|1%

|6%

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

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

| colspan="16" | Iowa caucuses

|Jan 31 – Feb 3

|551 (RV)

| –

|{{party shading/Democratic}}|22%

|9%

|5%

|1%

|4%

|19%

|3%

|10%

|4%

|2%{{efn|name="B1SE1"}}

|4%

|17%

|Jan 31 – Feb 2

| ≈670 (RV){{efn|name="671kRV"}}

| –

|{{party shading/Democratic}}|20%

|13%

|5%

|2%

|3%

|17%

|2%

|8%

|5%

|4%{{efn|Bennet with 2%; Patrick and "someone else" with 1%}}

|9%

|9%

|Jan 30 – Feb 2

|532 (LV)

|± 4.0%

|24%

|8%

|5%

|3%

|2%

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

| –{{efn|name=jan30|5% for all other candidates combined}}

|11%

|3%

| –{{efn|name=jan30}}

| –

|12%

|Jan 27 – Feb 2

|15,259 (LV)

|± 1%

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

|14%

|6%

|2%

|3%

|24%

|3%

|14%

|4%

|3%{{efn|name="BP1SE1"}}

| –

| –

|+January 2020 polling

! style="background-position: right 85%;" | Poll source

! style="width:90px; background-position: right 85%;"|Date(s)
administered

! style="width:90px; background-position: right 85%;"|Sample
size{{efn|name=key}}

! style="width:50px; background-position: right 85%;"|Margin
{{nowrap|of error}}

! {{vert header|stp=1|Joe Biden}}

! {{vert header|stp=1|Michael Bloomberg}}

! {{vert header|stp=1|Pete Buttigieg}}

! {{vert header|stp=1|Amy Klobuchar}}

! {{vert header|stp=1|Bernie Sanders}}

! {{vert header|stp=1|Tom Steyer}}

! {{vert header|stp=1|Elizabeth Warren}}

! {{vert header|stp=1|Andrew Yang}}

! {{vert header|stp=1|mw=8|Other}}

! {{vert header|stp=1|Undecided}}

|Jan 29–30

|565 (RV)

|± 5.0%

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

|12%

|4%

|2%

|18%

|4%

|10%

|4%

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

|–{{efn|name=notreleased}}

| Jan 23–30

| 336 (RV)

| –

|{{party shading/Democratic}}|26%

|8%

|7%

|3%

|19%

|2%

|13%

|4%

|7%{{efn|Bennet and Gabbard with 1%; Delaney and Patrick with no voters; "someone else" with 3%; refused with 2%}}

|11%

|Jan 27–29

|980 (RV)

| –

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

|13%

|6%

|3%

|20%

|2%

|12%

|3%

|6%{{efn|Gabbard with 1%; Delaney with 0%; other with 3%; would not vote with 2%}}

|7%

| style="text-align:left;" |NBC/WSJ[https://www.documentcloud.org/documents/6747015-200053-NBCWSJ-January-Poll-Democratic-Primary.html NBC/WSJ][https://assets.documentcloud.org/documents/6750229/200053-NBCWSJ-January-Poll.pdf]

|Jan 26–29

|428 (LV)

|± 4.74%

|26%

|9%

|7%

|5%

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

|2%

|15%

|4%

|3%{{efn|Gabbard with 2%; Patrick with 1%; Bennet, Delaney, "none" and other with no voters}}

|2%

|Jan 26–28

|591 (LV)

| –

| {{party shading/Democratic}} |26%

|4%

|7%

|4%

|24%

|1%

|20%

|4%

|5%{{efn|Gabbard with 3%; Patrick with 1%; Bennet and Delaney with 0%; would not vote with 1%|name=|group=}}

|4%

|Jan 15–28

|2,227 (LV)

|± 2%

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

|9%

|9%

|3%

|18%

|2%{{efn|Support for Steyer, Yang, and all candidates listed in 'other' is estimated as the proportion of voters who support them plus (the proportion of undecided voters who lean towards them * the proportion of voters who are undecided)}}

|16%

|2%

|3%{{efn|Gabbard with 1%; Bennet with 0%; other with 2%}}{{efn|name=538.com}}

|3%

| style="text-align:left;" |Quinnipiac University[https://poll.qu.edu/national/release-detail?ReleaseID=3654 Quinnipiac University]

|Jan 22–27

|827 (RV)

|± 3.4%

|{{party shading/Democratic}}|26%

|8%

|6%

|7%

|21%

|2%

|15%

|3%

|2%{{efn|Gabbard with 1%; Bennet, Delaney, and Patrick with 0%}}

|11%

|Jan 18–27

|1,619 (LV)

|± 2.6%

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

|5%

|8%

|4%

|21%

|2%

|23%

|4%

|2%{{efn|Gabbard with 2%; Bennet, Delaney and Patrick with 0%; none of these with 1%}}

| –

|Jan 20–26

|17,836 (LV)

|± 1.0%

|{{party shading/Democratic}}|29%

|12%

|7%

|3%

|23%

|3%

|14%

|5%

|4%{{efn|Bennet, Delaney and Gabbard with 1%; Patrick with 0%; someone else with 1%}}

| –

|Jan 18–26

|1,619 (LV)

|± 2.6%

|{{party shading/Democratic}}|42%{{efn|If only Biden, Sanders and Warren remained candidates}}

| –

| –

| –

|23%

| –

|30%

| –

| –

| –

|Jan 22–23

|545 (RV)

|± 5.0%

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

|10%

|7%

|3%

|20%

|2%{{efn|name=538.com|Additional data sourced from fivethirtyeight.com}}

|12%

|3%{{efn|name=538.com}}

|1%{{efn|Gabbard with 1%; Delaney and Patrick with 0%}}{{efn|name=538.com}}

|–{{efn|name=notreleased}}

|Jan 21–23

|497 (LV)

|± 4.1%

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

|7%

|6%

|4%

|27%

|1%

|13%

|8%

|4%{{efn|Bennet, Delaney and Gabbard with 1%; Patrick with 0%; someone else with 2%}}

| –

|Jan 20–23

|474 (LV)

| –

|{{party shading/Democratic}}|26%

|13%

|7%

|3%

|23%

|2%

|10%

|3%

|3%{{efn|Bennet with 2%; Gabbard with 1%; Delaney and Patrick with 0%}}

|10%

| style="text-align:left;" |Washington Post/ABC News[https://docs.google.com/spreadsheets/d/1CpUPZwYYsqSKzcFdExi1xOllSJGcR-XQZk9pVfnRAFY/edit#gid=617562620 Washington Post/ABC News]

|Jan 20–23

|276 (LV){{efn|Likely voter total used here is Democrats and Democratic-leaning registered voters listed as 'absolutely certain to vote'}}

| –

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

|7%

|4%

|4%

|22%

|1%

|14%

|6%

|6%{{efn|Bennet with 2%; Patrick with 1%; Gabbard with 0%; other with 1%; "none of these" with 2%; would not vote with no voters}}

|3%

|Jan 21–22

| ≈670 (RV){{efn|name="671kRV"}}

| –

|{{party shading/Democratic}}|20%

|9%

|6%

|4%

|16%

|3%

|9%

|5%

|18%{{efn|Gabbard with 3%; Bennet, Delaney and Patrick with 1%; "someone else" with 0%; would not vote with 12%}}

|11%

|Jan 20–22

|878 (RV)

|±3.3%

|{{party shading/Democratic}}|29%

|11%

|5%

|2%

|17%

|4%

|9%

|4%

|8%{{efn|Bennet and Gabbard with 2%; Delaney and Patrick with 1%; other with 2%}}

|11%

| style="text-align:left;" |Fox News[https://www.scribd.com/document/444324295/Fox-News-Poll-January-19-22-2020 Fox News]

|Jan 19–22

|495 (LV)

|± 4.0%

|{{party shading/Democratic}}|26%

|10%

|7%

|3%

|23%

|3%

|14%

|5%

|2%{{efn|Patrick with 1%; Bennet, Delaney, and Gabbard with 0%; None of these with 1%}}

|5%

|Jan 19–21

|470 (RV)

| –

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

|6%

|8%

|4%

|18%

|2%

|21%

|3%

|4%{{efn|Gabbard with 3%; Bennet, Delaney and Patrick with 0%; would not vote with 1%|name=|group=}}

|5%

| style="text-align:left;" |Monmouth University[https://www.monmouth.edu/polling-institute/documents/monmouthpoll_us_012220.pdf/ Monmouth University]

|Jan 16–20

|372 (LV)

| ± 5.1%

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

| 9%

| 6%

| 5%

| 23%

| 1%

| 14%

| 3%

| 3%{{efn|Bennet and Gabbard with 1%; Delaney and Patrick with 0%; Others with 1%; no one with 1%|name=|group=}}

| 6%

| style="text-align:left;" |CNN/SSRS[http://cdn.cnn.com/cnn/2020/images/01/22/rel1b.-.2020.pdf CNN/SSRS]

|Jan 16–19

|500 (RV)

| ± 5.3%

| 24%

| 5%

| 11%

| 4%

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

| 2%

| 14%

| 4%

| 3%{{efn|"No one" with 2%; Other with 1%; Bennet, Delaney, Gabbard and Patrick with 0%|name=|group=}}

| 5%

|Jan 15–19

|12,402 (LV)

|± 1.0%

|{{party shading/Democratic}}|29%

|10%

|8%

|3%

|24%

|3%

|15%

|4%

|5%{{efn|Gabbard with 2%; Bennet and Delaney with 1%; Patrick with 0%; someone else with 1%|name=|group=}}

|–

|Jan 6–19

|5,861 (RV)

| ±1.9%

|{{party shading/Democratic}}|26%

|5%

|7%

|2%

|21%

|1%

|16%

|3%

|13%{{efn|Booker with 1%; Bennet, Bullock, Castro, Delaney, Gabbard, Harris, O'Rourke, Patrick and Williamson with no voters; "Other response" with 12%}}

|5%{{efn|name="noresponse"|Listed as "no response"; see the "Other" column for other potentially undecided voters}}

|Jan 15–16

|438 (LV)

| –

|24%

|11%

|8%

|4%

|24%

|3%

|11%

|6%

|4%{{efn|Gabbard with 2%; someone else with 2%}}

|6%

|Jan 15–16

|428 (RV)

| ± 5.4%

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

|11%

|7%

|2%

|22%

|1%

|14%

|3%

|3%{{efn|Bennet with 2%; Patrick with 1%; Delaney, Gabbard and other with 0%; can't/won't vote with 0%}}

|13%

|Jan 14–16

|1,086 (LV)

| ± 3.6%

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

| 9%

| 9%

| 2%

| 21%

| 3%

| 14%

| 4%

| 3%{{efn|Gabbard with 2%; other with 1%}}

| 3%

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

| style="border-right-style:hidden;"| Jan 14

| colspan="12" | Seventh Democratic primary debate

|Jan 13–14

|451 (RV)

|± 4.6%

|{{party shading/Democratic}}|29%

|7%

|4%

|3%

|19%

|3%

|11%

|2%

|5%{{efn|Bennet with 2%; Delaney and Gabbard with 1%; Patrick with 0%; other with 1%}}

|15%

|Jan 11–14

|521 (LV)

| –

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

|5%

|7%

|3%

|20%

|1%

|19%

|3%

|4%{{efn|Booker and Gabbard with 2%; Bennet, Delaney and Patrick with 0%; would not vote with 2%}}

|6%

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

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

| colspan="12" | Booker withdraws from the race

|style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/national/release-detail?ReleaseID=3653 Quinnipiac University]

|Jan 8–12

|651 (RV)

|± 3.8%

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

|6%

|8%

|4%

|19%

|1%

|16%

|5%

|5%{{efn|Bennet, Booker, Gabbard, and Patrick with 1%; Delaney with 0%; wouldn't vote with 1%; someone else with 0%}}

|11%

|Jan 6–12

|17,096 (LV)

|± 1.0%

|{{party shading/Democratic}}|29%

|8%

|8%

|3%

|23%

|4%

|14%

|5%

|7%{{efn|Booker and Gabbard with 2%; Bennet and Delaney with 1%; Patrick with 0%; someone else with 1%}}

| –

|Jan 3–11

|333 (RV)

| –

|{{party shading/Democratic}}|26%

|7%

|9%

|3%

|15%

|2%

|20%

|3%

|7%{{efn|Gabbard, Delaney and Williamson with 1%; Booker with 0%; Delaney and Patrick with no voters; someone else with 3%; refused with 1%}}

|9%

|Jan 8–9

|436 (RV)

|± 5.4%

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

|8%

|7%

|1%

|20%

|3%

|15%

|3%

|6%{{efn|Booker with 2%; Bennet, Delaney and Williamson with 1%; Gabbard and Patrick with 0%; other with 1%; would not vote with no voters}}

|13%

|Jan 5–7

|574 (LV)

| –

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

|3%

|7%

|3%

|20%

|2%

|22%

|3%

|6%{{efn|Gabbard with 3%; Booker with 1%; Bennet, Delaney, Patrick and Williamson with 0%; would not vote with 2%}}

|5%

|Dec 30, 2019 – Jan 5, 2020

|17,213 (LV)

|± 1.0%

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

|7%

|8%

|3%

|23%

|4%

|14%

|4%

|8% {{efn|Booker & Gabbard with 2%; Bennet, Delaney & Williamson with 1%; Patrick with 0%; someone else with 1%|name=|group=}}

|–

|+December 2019 polling

! style="background-position: right 85%;" | Poll source

! style="width:90px; background-position: right 85%;"|Date(s)
administered

! style="width:90px; background-position: right 85%;"|Sample
size{{efn|name=key}}

! style="width:50px; background-position: right 85%;"|Margin
{{nowrap|of error}}

! {{vert header|stp=1|Joe Biden}}

! {{vert header|stp=1|Michael Bloomberg}}

! {{vert header|stp=1|Cory Booker}}

! {{vert header|stp=1|Pete Buttigieg}}

! {{vert header|stp=1|Tulsi Gabbard}}

! {{vert header|stp=1|Amy Klobuchar}}

! {{vert header|stp=1|Bernie Sanders}}

! {{vert header|stp=1|Tom Steyer}}

! {{vert header|stp=1|Elizabeth Warren}}

! {{vert header|stp=1|Andrew Yang}}

! {{vert header|stp=1|mw=4|Other}}

! {{vert header|stp=1|Undecided}}

|Dec 28–31

|548 (LV)

| –

|{{party shading/Democratic}}|29%

|3%

|2%

|8%

|3%

|4%

|19%

|2%

|18%

|3%

|3%{{efn|Castro with 1%; Bennet, Delaney, Patrick, and Williamson with 0%; would not vote with 2%|name=|group=}}

|6%

|Dec 28–30

| ≈670 (RV){{efn|name="671kRV"}}

| –

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

|7%

|3%

|5%

|1%

|3%

|11%

|2%

|9%

|3%

|14%{{efn|Bennet and Castro with 1%; Delaney, Patrick, Williamson and "someone else" with 0%; would not vote with 12%}}

|13%

|Dec 27–29

|780 (RV)

| –

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

|7%

|2%

|7%

|1%

|2%

|17%

|2%

|12%

|3%

|7%{{efn|Castro, Delaney, Gillibrand and Messam with 1%; Gravel, Swalwell and Williamson with 0%; Ryan with no voters; other and would not vote with 1%}}

|10%

|Dec 23–29

|17,787 (LV)

|± 1.0%

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

|6%

|3%

|8%

|1%

|3%

|21%

|3%

|14%

|4%

|5%{{efn|Bennet, Castro, Delaney, and Williamson with 1%; Patrick with 0%; someone else with 1%|name=|group=}}

|–

|Dec 27–28

|431 (RV)

|± 4.7%

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

|11%

|2%

|6%

|2%

|2%

|16%

|2%

|11%

|2%

|4%{{efn|Castro with 2%; Williamson with 1%; Bennet and Patrick with 0%; other with 1%}}

|12%

|Dec 22–24

|586 (LV)

| –

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

|4%

|2%

|7%

|2%

|5%

|17%

|1%

|19%

|3%

|5%{{efn|Castro, Delaney, and Williamson with 1%; Bennet and Patrick with 0%; would not vote with 2%}}

|5%

|Dec 19–23

|412 (LV)

| –

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

|4%

|3%

|7%

|4%

|2%

|19%

| –

|20%

|4%

|4%{{efn|Castro with 2%; Delaney and Williamson with 1%; Bennet with 0%|name=|group=}}

| –

|Dec 20–22

|7,178 (LV)

|± 1.0%

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

| 6%

| 3%

| 9%

| 2%

| 3%

| 21%

| 3%

| 15%

| 5%

| 5%{{efn|name="BCDW1P0SE1"|Bennet, Castro, Delaney and Williamson with 1%; Patrick with 0%; someone else with 1%}}

| –

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

| style="border-right-style:hidden;"| Dec 19

| colspan="14" | Sixth Democratic primary debate

|Dec 18–19

|709 (A)

| –

|{{party shading/Democratic}}|18%

|5%

|1%

|4%

|2%

|1%

|15%

|2%

|10%

|2%

|8%{{efn|Castro and Delaney with 1%; Bennet, Patrick and Williamson with 0%; other with 1%; can't/won't vote with 5%}}

|{{party shading/Undecided}}|29%

|Dec 14–18

|480 (LV)

|–

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

|5%

|3%

|5%

|2%

|2%

|17%

|4%

|15%

|5%

|5%{{efn|Castro with 2%; Bennet, Delaney and Williamson with 1%; Patrick with 0%}}

|11%

|Dec 15–17

|525 (LV)

|± 4.2%

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

|3%

|2%

|8%

|4%

|2%

|25%

|2%

|12%

|6%

|2%{{efn|Delaney with 1%; Bennet, Castro, Patrick, and Williamson with 0%; someone else with 3%}}

|–

|style="text-align:left;"|NBC/WSJ[https://www.documentcloud.org/documents/6588056-19504-NBCWSJ-December-Poll.html NBC/WSJ]

|Dec 14–17

|410 (LV)

|nowrap|± 4.84%

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

|4%

|2%

|9%

|2%

|5%

|21%

|1%

|18%

|3%

|2%{{efn|Castro with 1%; Bennet, Castro, Delaney, Patrick, and Williamson with 0%; no one with 1%}}

|5%

|Dec 14–17

|555 (LV)

|–

|{{party shading/Democratic}}|29%

|4%

|2%

|7%

|3%

|4%

|19%

|2%

|17%

|3%

|6%{{efn|Castro with 2%; Bennet, Delaney, and Williamson with 1%; Patrick with 0%; "would not vote" with 1%}}

|4%

|style="text-align:left;"|CNN/SSRS[https://cdn.cnn.com/cnn/2019/images/12/19/rel14b.-.2020.pdf CNN/SSRS]

|Dec 12–15

|408 (RV)

|± 5.8%

|{{party shading/Democratic}}|26%

|5%

|3%

|8%

|1%

|3%

|20%

|1%

|16%

|3%

|6%{{efn|Castro with 2%; Delaney with 1%; Bennet with 0%; Patrick and Williamson without voters; no one with 2%; someone else with 1%}}

|8%

|style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/images/polling/us/us12162019_utel65.pdf/ Quinnipiac University] {{Webarchive|url=https://web.archive.org/web/20191216204224/https://poll.qu.edu/images/polling/us/us12162019_utel65.pdf/ |date=December 16, 2019 }}

|Dec 11–15

|567 (RV)

|± 4.1%

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

|7%

|2%

|9%

|1%

|3%

|16%

|1%

|17%

|3%

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

|10%

|Dec 9–15

|13,384 (LV)

|± 1.0%

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

| 7%

| 3%

| 8%

| 2%

| 2%

| 22%

| 3%

| 15%

| 4%

| 5%{{efn|name="BCDW1P0SE1"}}

| –

|Dec 13–14

|456 (RV)

|± 4.6%

| {{party shading/Democratic}}|29%

| 5%

| 2%

| 5%

| 1%

| 3%

| 13%

| 3%

| 13%

| 3%

| 9%{{efn|Castro with 4%; Delaney and Patrick with 2%; Bennet with 1%; Williamson with 0%}}

| 13%

|style="text-align:left;" |Suffolk University/USA Today[https://www.suffolk.edu/-/media/suffolk/documents/academics/research-at-suffolk/suprc/polls/national/2019/12_17_2019_marginals_pdftxt.pdf?la=en&hash=8029D50694EBE613E48935257105F57807B7872E Suffolk University/USA Today]

|Dec 10–14

|384 (LV)

| –

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

| 6%

| 3%

| 8%

| 1%

| 3%

| 14%

| 1%

| 13%

| 2%

| 1%{{efn|"refused" with 1%, Patrick with 0%}}

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

|Dec 9–14

|447 (LV)

| –

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

| 6%

| 1%

| 6%

| 1%

| 2%

| 14%

| 1%

| 14%

| 2%

| 3%{{efn|Castro with 2%; Delaney with 1%; Bennet, Patrick and Williamson with 0%}}

| 13%

|Dec 5–14

|312 (RV)

| –

| {{party shading/Democratic}}|26%

| 5%

| 3%

| 9%

| 1%

| 2%

| 18%

| 2%

| 14%

| 2%

| 10%{{efn|Bennet and Castro with 1%; Williamson with 0%; Delaney and Patrick with no voters; someone else with 3%; refused with 5%}}

| 10%

|Dec 11–12

|593 (RV)

| –

|{{party shading/Democratic}}|21%

|7%

| –{{efn|Data not yet released for this sample for Booker, Castro and Williamson}}

|5%

|1%

|2%

|18%

|3%

|11%

|3%

|6%{{efn|Patrick with 1%; Bennet with 0%; other with 2%; can't/won't vote with 3%}}

|18%

|style="text-align:left;"|NPR/PBS NewsHour/Marist[http://maristpoll.marist.edu/wp-content/uploads/2019/12/UPDATED_NPR_PBS-NewsHour_Marist-Poll_USA-NOS-and-Tables_1912131159.pdf NPR/PBS NewsHour/Marist]

|Dec 9–11

|704 (RV)

|± 5.4%

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

|4%

|4%

|13%

|1%

|4%

|22%

|<1%

|17%

|5%

|2%{{efn|Castro and Bennet with 1%; Patrick, Williamson, and "other" with <1%, Delaney with no votes}}

|5%

|style="text-align:left;"|Fox News[https://www.foxnews.com/politics/fox-news-poll-results-december-8-11-2019 Fox News]

|Dec 8–11

|1,000 (RV)

|± 4.5%

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

|5%

|2%

|7%

|3%

|5%

|20%

|1%

|13%

|3%

|5%{{efn|Bennet, Castro, and Williamson with 1%; Delaney and Patrick with 0%; "none of the above" with 2%}}

|7%

|Dec 7–10

|497 (LV)

| –

|{{party shading/Democratic}}|26%

|4%

|3%

|11%

|3%

|2%

|16%

|1%

|21%

|3%

|4%{{efn|Bennet and Castro with 1%; would not vote with 2%}}

|6%

|style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/images/polling/us/us12102019_uwhp13.pdf/ Quinnipiac University] {{Webarchive|url=https://web.archive.org/web/20191211163302/https://poll.qu.edu/images/polling/us/us12102019_uwhp13.pdf/ |date=December 11, 2019 }}

|Dec 4–9

|665 (RV)

|± 3.8%

|{{party shading/Democratic}}|29%

|5%

|1%

|9%

|2%

|3%

|17%

|1%

|15%

|4%

|5%{{efn|Bennet, Castro, Delaney, and Williamson with 1%; Patrick with no voters; would not vote with 1%}}

|11%

|Dec 5–8

|443 (LV)

|± 4.7%

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

|8%

|–

|7%

|3%

|2%

|20%

|3%

|16%

|4%

|3%{{efn|someone else with 3%}}

|6%

|style="text-align:left;"|Monmouth University[https://www.monmouth.edu/polling-institute/documents/monmouthpoll_us_121019.pdf Monmouth University]

|Dec 4–8

|384 (RV)

|± 5%

| {{party shading/Democratic}}|26%

| 5%

| 2%

| 8%

| <1%

| 4%

| 21%

| 1%

| 17%

| 3%

| 5%{{efn|Castro and Patrick with 1%; Williamson with <1%; Bennet and Delaney with 0%; other with <1%; no one with 3%}}

| 11%

|Dec 2–8

|15,442 (LV)

|± 1.0%

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

|6%

|3%

|9%

|2%

|2%

|22%

|3%

|16%

|4%

|5%{{efn|Bennet, Castro, Delaney and Williamson with 1%; Patrick with 0%; "Someone else" with 1%|name=|group=}}

| –

|Dec 4–5

|596 (A)

|–

|{{party shading/Democratic}}|19%

|4%

|1%

|6%

|0%

|1%

|14%

|1%

|9%

|3%

|5%{{efn|Castro, Delaney, and Patrick with 1%; Bennet with 0%; others with 2%; will not vote with 4%|name=|group=}}

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

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

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

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

|Dec 1–3

|541 (LV)

|–

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

|3%

|3%

|12%

|2%

|3%

|13%

|0%

|18%

|2%

|8%{{efn|Harris with 4%; Bennet, Castro, Patrick and Williamson with 1%; Bullock, Delaney, and Sestak with 0%; would not vote with 1%|name=|group=}}

|7%

|Nov 30 – Dec 1

|437 (RV)

|–

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

|6%

|1%

|9%

|0%

|2%

|15%

|2%

|10%

|2%

|8%{{efn|Castro and Harris with 2%; Bennet, Bullock, Delaney and Patrick with 1%; Sestak and Williamson with 0%|name=|group=}}

|13%

|Nov 25 – Dec 1

|1,200 (LV)

|± 2.8%

|{{party shading/Democratic}}|29%

|8%

|2%

|10%

|2%

|2%

|15%

|2%

|14%

|2%

|8%{{efn|Harris with 5%; Castro and Patrick with 1%; Bennet, Bullock, Sestak and Williamson with <1%; Delaney with 0%; other with 1%}}

|7%

|Nov 25 – Dec 1

|15,773 (LV)

|± 1.0%

|{{party shading/Democratic}}|29%

|5%

|2%

|9%

|2%

|2%

|20%

|2%

|15%

|4%

|11%{{efn|Harris with 5%; Bennet, Castro, Delaney and Williamson with 1%; Patrick with 0%; someone else with 2%|name=|group=}}

| –

|+November 2019 polling

! style="background-position: right 85%;" | Poll source

! style="width:90px; background-position: right 85%;"|Date(s)
administered

! style="width:90px; background-position: right 85%;"|Sample
size{{efn|name=key}}

! style="width:50px; background-position: right 85%;"|Margin
{{nowrap|of error}}

! {{vert header|stp=1|Joe Biden}}

! {{vert header|stp=1|Michael Bloomberg}}

! {{vert header|stp=1|Pete Buttigieg}}

! {{vert header|stp=1|Kamala Harris}}

! {{vert header|stp=1|Amy Klobuchar}}

! {{vert header|stp=1|Bernie Sanders}}

! {{vert header|stp=1|Elizabeth Warren}}

! {{vert header|stp=1|Andrew Yang}}

! {{vert header|stp=1|mw=4|Other}}

! {{vert header|stp=1|Undecided}}

|Nov 27–29

|756 (RV)

| –

|{{party shading/Democratic}}|29%

|7%

|8%

|5%

|2%

|16%

|13%

|3%

|10%{{efn|Steyer with 2%; Booker, Delaney, Gabbard, Gravel and Swalwell with 1%; Castro, Gillibrand, Messam and Williamson with 0%; Ryan with no voters; other with 0%; will not vote with 2%}}

|8%

|Nov 24–26

|550 (LV)

| –

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

|3%

|12%

|4%

|3%

|15%

|17%

|3%

|10%{{efn|Booker and Gabbard with 2%; Bullock, Castro, Delaney, Patrick, Steyer and Williamson with 1%; Bennet and Sestak with 0%; would not vote with 2%|name=|group=}}

|8%

|style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/national/release-detail?ReleaseID=3650 Quinnipiac University]

|Nov 21–25

|574 (RV)

|± 4.9%

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

|3%

|16%

|3%

|3%

|13%

|14%

|2%

|8%{{efn|Bennet, Booker and Castro with 2%; Gabbard with 1%; Bullock, Delaney, Patrick, Sestak, Steyer, and Williamson with 0%; Someone else with 0%, Wouldn't vote with 1%|name=|group=}}

|11%

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

| style="border-right-style:hidden;"| Nov 24

| colspan="14" | Bloomberg announces his candidacy

|rowspan="2"style="text-align:left;"|CNN/SSRS[https://s3.documentcloud.org/documents/6561700/REL13B-2020.pdf CNN/SSRS]

|rowspan="2"|Nov 21–24

|rowspan="2"|431 (RV)

|–

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

|3%

|11%

|3%

|2%

|17%

|14%

|3%

|7%{{efn|Steyer with 3%; Booker with 2%; Castro with 1%; Bennet, Bullock, Delaney, Gabbard, Patrick, Sestak and Williamson with 0%; Someone else with 1%; no one with 3%|name=|group=}}

|8%

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

| –

|17%

| –

| –

|23%

|20%

| –

|3%{{efn| no one 3%}}

|2%

|Nov 21–24

|8,102 (LV)

|± 1.0%

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

|2%

|9%

|5%

|2%

|21%

|15%

|4%

|13%{{efn|Booker, Gabbard and Steyer with 2%; Bennet, Bullock, Castro, Delaney and Williamson with 1%; Patrick with 0%; someone else with 2%|name=|group=}}

| –

|Nov 21–22

|698 (A)

|± 5.0%

|{{party shading/Democratic}}|21%

| –

|7%

|2%

|2%

|17%

|11%

|5%

|8%{{efn|Steyer with 2%; Castro, Gabbard, and Patrick with 1%; Bennet, Bullock, Delaney, Messam, Sestak, and Williamson with 0%; someone else with 3%|name=|group=}}

|20%

|rowspan="2"|Nov 20–21

|rowspan="2"|1,088 (LV)

|rowspan="2"|± 3.6%

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

|3%

|11%

|5%

|2%

|17%

|15%

|4%

|9%{{efn|Booker and Steyer with 2%; Castro, Gabbard and Patrick with 1%; others with 2%|name=|group=}}

|4%

| –

|12%

|5%

|2%

|17%

|16%

|4%

|9%{{efn|Booker, Gabbard and Steyer with 2%; Castro with 1%; others with 2%|name=|group=}}

|4%

|Nov 15–21

| 987 (LV)

| –

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

|2%

|6%

|4%

|1%

|23%

|12%

|4%

|9%{{efn|Booker, Gabbard and Steyer with 2%; Bennet, Bullock, and Patrick with 1%; Castro, Delaney, Sestak and Williamson with 0%}}

|7%

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

| style="border-right-style:hidden;"| Nov 20

| colspan="14" | Fifth Democratic primary debate

|Nov 17–20

|468 (LV)

|± 4.5%

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

|1%

|7%

|3%

|1%

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

|20%

|4%

|10%{{efn|Gabbard and Steyer with 2%; Booker, Castro and Sestak with 1%; Bennet, Bullock, Delaney, Messam, Patrick and Williamson with 0%; someone else with 3%|name=|group=}}

| –

|Nov 16–20

|1,142 (LV)

|± 2.9%

|22%

|1%

|14%

|4%

|2%

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

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

|4%

|7%{{efn|Gabbard with 2%; Bennet, Booker, Castro, Patrick and Williamson with 1%; Bullock, Delaney, Messam, Sestak and Steyer with 0%}}

|0%

|Nov 17–19

|586 (LV)

|–

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

| –

|9%

|4%

|2%

|12%

|22%

|2%

|7%{{efn|Gabbard with 3%; Bennet, Booker, Bullock, and Steyer with 1%; Castro, Delaney, Messam, Patrick, Sestak, and Williamson with 0%; would not vote with 3%|name=|group=}}

|7%

|Nov 16–18

|1,787 (LV)

|± 2.0%

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

| –

|7%

|5%

|2%

|17%

|18%

|4%

|9%{{efn|Booker, Castro, Steyer, and Williamson with 2%; Gabbard with 1%|name=|group=}}

|–

|Nov 16–17

|449 (RV)

|± 4.6%

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

|3%

|7%

|4%

|1%

|18%

|15%

|2%

|9%{{efn|Castro and Delaney with 2%; Bennet, Booker, Gabbard, Patrick and Steyer with 1%|name=|group=}}

|10%

|Nov 11–17

|17,050 (LV)

|± 1.0%

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

|3%

|8%

|5%

|2%

|20%

|17%

|3%

|11%{{efn|Booker and Gabbard with 2%; Bennet, Bullock, Castro, Delaney, Steyer and Williamson with 1%; Patrick with 0%; someone else with 1%|name=|group=}}

| –

|rowspan="2"|Nov 12–14

|685 (A)

|–

|{{party shading/Democratic}}|19%

|3%

|6%

|3%

|1%

|{{party shading/Democratic}}|19%

|13%

|2%

|15%{{efn|Bennet, Booker, Bullock, Castro, Gabbard and Steyer with 1%; Delaney, Messam, Sestak and Williamson with 0%; others with 3%; will not vote with 6%|name=|group=}}

|18%

|–

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

| –

|6%

|5%

|1%

|18%

|11%

|2%

|9%{{efn|Booker with 2%; Bullock, Castro, Gabbard and Steyer with 1%; Delaney, Messam, Sestak and Williamson with 0%; others with 3%; will not vote with 6%|name=|group=}}

|21%

|Nov 10–12

|600 (LV)

|–

|23%

| –

|9%

|5%

|2%

|17%

|{{party shading/Democratic}}|26%

|4%

|8%{{efn|Castro and Gabbard with 2%; Booker, Bullock, Delaney and Steyer with 1%; Bennet, Messam, Sestak and Williamson with 0%; would not vote with 1%}}

|4%

|Nov 4–10

|16,400 (LV)

|± 1.0%

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

|2%

|8%

|5%

|2%

|20%

|19%

|3%

|12%{{efn|Booker with 3%; Bennet, Bullock, Castro, Delaney, Gabbard, Steyer and Williamson with 1%; someone else with 2%|name=|group=}}

| –

|Nov 3–5

|579 (LV)

|–

|{{party shading/Democratic}}|26%

| –

|8%

|6%

|2%

|14%

|25%

|1%

|12%{{efn|Castro and Gabbard with 3%; Booker with 2%; Bullock, Delaney, Steyer and Williamson with 1%; Bennet, Messam and Sestak with 0%; will not vote with 2%|name=|group=}}

|6%

|Nov 1–4

|686 (A)

|–

|{{party shading/Democratic}}|22%

| –

|6%

|4%

|0%

|15%

|11%

|2%

|7%{{efn|Bennet, Booker, Castro, O'Rourke and Steyer with 1%; Bullock, Delaney, Gabbard, Gillibrand, Hickenlooper, Messam and Williamson with 0%; others with 2%; will not vote with 5%|name=|group=}}

|25%

|Oct 31 – Nov 3

|456 (LV)

| –

|17%

| –

|14%

|4%

|2%

|17%

|{{party shading/Democratic}}|21%

|4%

|6%{{efn|Gabbard with 3%; Booker, O'Rourke and Steyer with 1%; Castro with 0%; Bennet, Bullock, Delaney, Messam, Sestak and Williamson with no voters}}

|14%

|style="text-align:left;"|Monmouth University[https://www.monmouth.edu/polling-institute/documents/monmouthpoll_us_110619.pdf Monmouth University]

|Oct 30 – Nov 3

|345 (RV)

|± 5.3%

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

| –

|9%

|5%

|2%

|20%

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

|3%

|6%{{efn|Booker with 3%; Steyer with 1%; Bennet, Bullock and Williamson with <%1; Castro, Delaney, Gabbard and Sestak with 0%; "no one" with 1%; other with 1%|name=|group=}}

|7%

|Oct 28 – Nov 3

|16,071 (LV)

|± 1.0%

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

| –

|7%

|5%

|2%

|20%

|20%

|3%

|12%{{efn|Booker and Gabbard with 2%; Bennet, Bullock, Castro, Delaney, Steyer and Williamson with 1%; someone else with 2%|name=|group=}}

| –

|Oct 21 – Nov 3

|2,599 (LV)

|± 2.0%

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

| –

|6%

|4%

|2%

|13%

|16%

|2%

|6%{{efn|O'Rourke with 2%; Booker, Gabbard, Steyer and Williamson with 1%; Bennet, Bullock, Castro, Delaney, Messam, Ryan and Sestak with 0%|name=|group=}}

|21%

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

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

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

|+October 2019 polling

! style="background-position: right 85%;" | Poll source

! style="background-position: right 85%;" | Date(s)
administered

! style="background-position: right 85%;" | Sample
size{{efn|name=key}}

! style="background-position: right 85%;" | Margin
{{nowrap|of error}}

! {{vert header|stp=1|Joe Biden}}

! {{vert header|stp=1|Cory Booker}}

! {{vert header|stp=1|Pete Buttigieg}}

! {{vert header|stp=1|Tulsi Gabbard}}

! {{vert header|stp=1|Kamala Harris}}

! {{vert header|stp=1|Amy Klobuchar}}

! {{vert header|stp=1|Beto O'Rourke}}

! {{vert header|stp=1|Bernie Sanders}}

! {{vert header|stp=1|Elizabeth Warren}}

! {{vert header|stp=1|Andrew Yang}}

! {{vert header|stp=1|mw=4|Other}}

! {{vert header|stp=1|Undecided}}

|Oct 29–31

|640 (RV){{efn|name="Demo"|Democrats only}}

| –

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

|3%

|4%

|0%

|5%

|3%

|2%

|18%

|15%

|2%

|5%{{efn|Gillibrand, Steyer and Williamson with 1%; Castro, Gravel, Messam and Swalwell with 0%; Delaney with no voters; not planning on voting with 2%; other with 0%}}

|8%

|Oct 25–31

|541 (LV)

| –

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

|3%

|8%

|2%

|5%

|2%

|1%

|12%

|27%

|2%

|3%{{efn|Bennet, Castro, and Steyer with 1%; Bullock, Delaney, Messam, Sestak, and Williamson with 0%}}

|8%

|Oct 24–31

|361 (RV)

| –

|{{party shading/Democratic}}|29%

|1%

|7%

|0%

|2%

|3%

|1%

|13%

|23%

|3%

|4%{{efn|Castro, Steyer and Williamson with 1%; Bennet, Bullock, Delaney, Messam, Ryan and Sestak with 0%; someone else with 1%; refused with 1%}}

|13%

| style="text-align:left;" rowspan="2"|Fox News[https://www.foxnews.com/politics/fox-news-poll-results-october-27-30-2019 Fox News]

| rowspan="2"|Oct 27–30

| rowspan="2"|471 (LV)

| rowspan="2"|± 4.5%

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

|2%

|7%

|2%

|3%

|2%

|2%

|19%

|21%

|3%

|2%{{efn|Steyer with 1%; Bennet, Bullock, Castro with 0%; Delaney, Messam, Sestak, and Williamson with no voters; "none of these" with 1%; other with 0%}}

|4%

| –

| –

| –

| –

| –

| –

| –

| –

| –

| {{party shading/Democratic}}|38%{{efn|Bloomberg with 6%; other with 32%}}

| {{party shading/Undecided}}|62%

|style="text-align:left;"|NBC News/Wall Street Journal[https://www.documentcloud.org/documents/6538104-19433-NBCWSJ-Late-October-Poll.html NBC News/Wall Street Journal]

|Oct 27–30

|414 (LV)

|± 4.8%

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

|2%

|6%

|2%

|4%

|5%

|1%

|19%

|23%

|3%

|3%{{efn|Bennet and Castro with 1%; Bullock, Delaney, Steyer, and Williamson with 0%; "none of these" with 1%; other with 0%}}

|5%

|style="text-align:left;"|ABC News/Washington Post[https://www.washingtonpost.com/context/context-card/eea087b6-ca22-4cd9-a254-6bdd49d000a4/ ABC News/Washington Post]

|Oct 27–30

|452 (A)

|± 5.5%

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

|2%

|7%

|2%

|2%

|1%

|1%

|19%

|21%

|2%

|9–10%{{efn|Castro with 2%; Bennet, Delaney and Steyer with 1%; Bullock and Williamson with <0.5%; "none of these" with 2%; other with 1%; would not vote with 1%}}

|6%

|Oct 27–29

|630 (LV)

| –

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

|1%

|8%

|2%

|4%

|2%

|4%

|14%

|23%

|3%

|6%{{efn|Bennet, Castro, Delaney and Steyer with 1%; Bullock, Messam, Sestak and Williamson with 0%; would not vote with 2%}}

|7%

|Oct 21–27

|16,186 (LV)

|± 1.0%

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

|2%

|7%

|2%

|6%

|2%

|2%

|20%

|20%

|3%

|7%{{efn|name="BBCDRSWSE1"|Bennet, Bullock, Castro, Delaney, Ryan, Steyer, Williamson and someone else with 1%}}

| –

|style="text-align:left;"|Suffolk University/USA Today[https://www.suffolk.edu/-/media/suffolk/documents/academics/research-at-suffolk/suprc/polls/national/2019/10_30_2019_marginals_pdftxt.pdf Suffolk University/USA Today][https://eu.usatoday.com/story/news/politics/elections/2019/10/30/poll-biden-slips-warren-rises-sanders-buttigieg-top-tier/4096461002/]

|Oct 23–26

|399 (LV)

|± 4.9%

|{{party shading/Democratic}}|26%

|2%

|10%

|4%

|3%

|2%

|0%

|13%

|17%

|3%

|4%{{efn|Steyer and Williamson with 1%; Bennet, Castro, Messam and Sestak with 0%; Bullock and Delaney with no voters; refused with 1%}}

|18%

|Oct 21–25

|449 (RV)

| –

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

|2%

|6%

|1%

|5%

|2%

|1%

|15%

|22%

|1%

|3%{{efn|Bullock, Ryan and Steyer with 1%; Bennet, Castro, Delaney, Messam, Sestak and Williamson with 0%}}

|11%

|Oct 21–22

|1,001 (RV)

|± 3.1%

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

|1%

|6%

|0%

|5%

|1%

|3%

|14%

|19%

|2%

|7%{{efn|Bennet, Castro, Messam, Ryan, Sestak, and Steyer with 1%; Delaney, Bullock, and Williamson with 0%; "Other" with 1%}}

|13%

|Oct 20–22

|628 (LV)

|–

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

|2%

|8%

|3%

|5%

|1%

|2%

|15%

|21%

|3%

|5%{{efn|Bennet, Castro, Ryan, Steyer and Williamson with 1%; Bullock, Delaney, Messam and Sestak with 0%; "would not vote" with 3%}}

|6%

|Oct 17–22

|468 (LV)

| –

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

|3%

|3%

|2%

|6%

|2%

|3%

|18%

|16%

|6%

|5%{{efn|Bullock, Castro, Delaney, Ryan, and Williamson with 1%; Bennet, Messam, and Steyer with 0%}}

|15%

|Oct 18 – 21

| ≈670 (RV){{efn|name="671kRV"}}

| –

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

|1%

|5%

|2%

|3%

|1%

|2%

|10%

|17%

|3%

|15%{{efn|Castro, Ryan and Williamson with 1%; Bullock, Delaney, Sestak and Steyer with 0%; Bennet with no votes; "someone else" with 1%; "Do not plan to vote in the Democratic primary" with 11%}}

|13%

|Oct 18–21

|430 (RV)

|± 4.7%

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

|3%

|6%

|3%

|5%

|1%

|2%

|25%

|21%

|4%

|3%{{efn|Steyer with 1%; Bennet, Bullock, Castro, Delaney, Ryan, Sestak, and Williamson with 0%; "Someone else" with 2%}}

|–

|style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/images/polling/us/us10242019_ulow46.pdf/ Quinnipiac University] {{Webarchive|url=https://web.archive.org/web/20191024115503/https://poll.qu.edu/images/polling/us/us10242019_ulow46.pdf/ |date=October 24, 2019 }}

|Oct 17–21

|713 (RV)

|± 4.6%

|21%

|1%

|10%

|1%

|5%

|3%

|1%

|15%

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

|1%

|3%{{efn|Castro and Steyer with 1%; Bennet, Bullock, Delaney, Messam, Ryan, Sestak, and Williamson with 0%; Someone else with 1%}}

|9%

|style="text-align:left;"|CNN/SSRS[https://cdn.cnn.com/cnn/2019/images/10/22/rel12b.-.2020.pdf CNN/SSRS]

|Oct 17–20

|424 (RV)

|± 5.8%

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

|1%

|6%

|1%

|6%

|3%

|3%

|16%

|19%

|2%

|3%{{efn|Bennet, Ryan, and Steyer with 1%; Bullock, Castro, Delaney, Sestak, and Williamson with 0%}}

|6%

|Oct 16–20

|11,521 (LV)

|± 1.0%

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

|3%

|6%

|1%

|6%

|2%

|3%

|18%

|21%

|3%

|8%{{efn|name="BBCDRSWSE1"}}

| –

|Oct 17–18

|566 (RV)

| –

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

|1%

|5%

|2%

|4%

|1%

|3%

|15%

|17%

|2%

|9%{{efn|Castro and Williamson with 1%; Bullock, Messam, and Ryan with 0%; can't/won't vote with 3%; other with 2%}}

|16%

|Oct 11–18

|1,839 (LV)

|± 2.3%

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

|2%

|4%

|1%

|5%

|2%

|3%

|16%

|18%

|2%

|4%{{efn|Bullock, Castro, and Steyer with 1%; Bennet, Delaney, Messam, Ryan, Sestak and Williamson with 0%; other and would not vote with 0%}}

|10%

|Oct 16

|2,202 (LV)

|± 2.0%

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

|2%

|6%

|1%

|7%

|2%

|2%

|18%

|21%

|3%

|9%{{efn|Steyer with 2%; Bennet, Bullock, Castro, Delaney, Ryan, Williamson and someone else with 1%}}

| –

|Oct 15–16

|1,017 (LV)

|± 3.7%

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

|2%

|5%

|1%

|7%

|2%

|2%

|17%

|22%

|2%

|2%{{efn|Castro and Steyer with 1%; "some other Democrat" with 1%}}

|4%

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

| style="border-right-style:hidden;"| Oct 15

| colspan=14| Fourth Democratic primary debate

|Oct 13–15

|623 (LV)

|–

|25%

|2%

|6%

|2%

|5%

|2%

|2%

|13%

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

|2%

|3%{{efn|Bennet, Delaney, and Steyer with 1%; Bullock, Castro, Messam, Ryan, Sestak, and Williamson with 0%}}

|6%

| style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/images/polling/us/us10142019_uydj26.pdf/ Quinnipiac University] {{Webarchive|url=https://web.archive.org/web/20191014190026/https://poll.qu.edu/images/polling/us/us10142019_uydj26.pdf/ |date=October 14, 2019 }}

|Oct 11–13

|505 (RV)

|± 5.3%

|27%

|2%

|8%

|<0.5%

|4%

|2%

|2%

|11%

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

|2%

|4%{{efn|Steyer with 2%; Bennet and Castro with 1%; Bullock, Delaney, Messam, Ryan, Sestak and Williamson with less than 0.5%}}

|8%

|Oct 10–13

|436 (RV)

| –

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

|3%

|4%

|1%

|7%

|1%

|1%

|17%

|16%

|3%

|3%{{efn|Castro and Ryan with 1%; Bennet, Bullock, Delaney, Messam, Sestak, Steyer and Williamson with 0%; refused with 1%}}

|19%

|Oct 7–13

|15,683 (LV)

|± 1.0%

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

|2%

|5%

|1%

|6%

|1%

|3%

|19%

|21%

|3%

|9%{{efn|name="BBCDRSW1SE2"|Bennet, Bullock, Castro, Delaney, Ryan, Steyer and Williamson with 1%; someone else with 2%}}

| –

|Oct 10–11

|468 (LV)

| –

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

|1%

|6%

|5%

|4%

|1%

|3%

|13%

|23%

|11%

|8%{{efn|Bennet, Castro, de Blasio, Delaney, Gillibrand, Moulton, Ryan and Williamson with 1%; Bullock, Gravel and Messam with 0%}}

| –

|Oct 4–11

|1,841 (LV)

|± 2.3%

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

|2%

|5%

|1%

|6%

|1%

|3%

|15%

|18%

|2%

|4%{{efn|Bennet, Castro, and Steyer with 1%; Bullock, Delaney, Messam, Ryan, Sestak and Williamson with 0%; other and would not vote with 0%}}

|8%

| style="text-align:left;"|Fox News[https://www.scribd.com/document/429686638/Fox-News-Poll-October-6-8-2019 Fox News]

|Oct 6–8

|484 (LV)

|± 4.5%

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

|2%

|4%

|1%

|5%

|2%

|3%

|17%

|22%

|2%

|5%{{efn|Bennet, Castro, Ryan, Steyer and Williamson with 1%; Bullock with less than 0.5%; Delaney, Messam and Sestak with 0%}}

|4%

|Oct 6–8

|598 (LV)

|–

|25%

|1%

|5%

|1%

|5%

|2%

|1%

|13%

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

|3%

|6%{{efn|Bullock with 2%; Castro, Delaney, Ryan and Steyer with 1%; Bennet, Messam, Sestak and Williamson with 0%; "would not vote" with 2%}}

|8%

|Oct 6–7

|446 (RV)

|± 4.6%

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

|1%

|4%

|1%

|6%

|2%

|4%

|17%

|15%

|2%

|6%{{efn|Steyer with 2%; Bennet, Castro, Ryan and Williamson with 1%; Delaney, Messam and other with 0%; Bullock and Sestak with no voters}}

|12%

| style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/images/polling/us/us10082019_uljv62.pdf/ Quinnipiac University] {{Webarchive|url=https://web.archive.org/web/20210116094050/https://poll.qu.edu/images/polling/us/us10082019_uljv62.pdf |date=January 16, 2021 }}

|Oct 4–7

|646 (RV)

|± 4.7%

|26%

|2%

|4%

|0%

|3%

|2%

|1%

|16%

|{{party shading/Democratic}}|29%

|3%

|3%{{efn|Bennet, Castro and Ryan with 1%; Bullock, Delaney, Messam, Sestak, Steyer, and Williamson with 0%; Someone else with 1%}}

|8%

|Sep 30 – Oct 6

|16,529 (LV)

|± 1.0%

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

|2%

|5%

|1%

|6%

|1%

|3%

|19%

|21%

|3%

|9%{{efn|name="BBCDRSW1SE2"}}

| –

|Oct 1–4

|1,043 (LV)

| –{{efn|name=unreleased|The result for this listing has not yet been released for the poll in question.}}

|27%

| –{{efn|name=unreleased}}

|7%

| –{{efn|name=unreleased}}

|6%

| –{{efn|name=unreleased}}

| –{{efn|name=unreleased}}

|12%

|{{party shading/Democratic}}|29%

| –{{efn|name=unreleased}}

| –{{efn|name=unreleased}}

| –{{efn|name=unreleased}}

|Oct 1–4

|7,402 (LV)

| –

|18%

|2%

|4%

| –

|3%

|1%

|6%

|17%

|{{party shading/Democratic}}|26%

|6%

|17%{{efn|Castro with 2%; Bennet with 1%; Steyer with 0%; others and undecided with 14%}}

| –

|Sep 27 – Oct 4

|1,815 (LV)

|± 2.3%

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

|2%

|4%

|1%

|6%

|1%

|2%

|13%

|19%

|2%

|5%{{efn|Bennet, Bullock, Castro, Messam, Ryan and Steyer with 1%; Delaney, Sestak, and Williamson with 0%; would not vote with 0%}}

|9%

|Sep 23 – Oct 4

|1,276 (LV)

| –

|23%

|2%

|6%

|1%

|5%

|1%

|2%

|15%

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

|3%

|1%{{efn|Delaney with 1%; Bennet, Bullock, Castro, Messam, Ryan, Sestak, Steyer, and Williamson with 0%}}

| –

|Sep 26 – Oct 3

|341 (RV)

|–

|26%

|0%

|7%

|1%

|3%

|1%

|2%

|10%

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

|3%

|2%{{efn|Castro and "Someone else" with 1%; Bennet, Bullock, Messam, Ryan and Steyer with 0%; Delaney, Sestak and Williamson with no voters}}

|16%

|Sep 30 – Oct 2

| ≈670 (RV){{efn|name="671kRV"}}

| –

|{{party shading/Democratic}}|29%

|1%

|4%

|1%

|4%

|1%

|2%

|12%

|11%

|1%

|23%{{efn|Castro with 2%; Bullock, Delaney, Ryan, Steyer and Williamson with 1%; "someone else" with 1%; Sestak with 0%; Bennet with no votes; "Do not plan to vote in the Democratic primary" with 15%}}

|10%

|Sep 28 – Oct 1

|602 (LV)

| –

|22%

|2%

|7%

|2%

|5%

|1%

|3%

|14%

|{{party shading/Democratic}}|26%

|3%

|4%{{efn|Bennet with 2%; Castro and Steyer with 1%; Bullock, Delaney, Messam, Ryan, Sestak, and Williamson with 0%; would not vote with 3%}}

|8%

|+September 2019 polling

! style="background-position: right 85%;" | Poll source

! style="background-position: right 85%;" | Date(s)
administered

! style="background-position: right 85%;" | Sample
size{{efn|name=key}}

! style="background-position: right 85%;" | Margin
{{nowrap|of error}}

! {{vert header|stp=1|Joe Biden}}

! {{vert header|stp=1|Cory Booker}}

! {{vert header|stp=1|Pete Buttigieg}}

! {{vert header|stp=1|Kamala Harris}}

! {{vert header|stp=1|Beto O'Rourke}}

! {{vert header|stp=1|Bernie Sanders}}

! {{vert header|stp=1|Elizabeth Warren}}

! {{vert header|stp=1|Andrew Yang}}

! {{vert header|stp=1|mw=4|Other}}

! {{vert header|stp=1|Undecided}}

|Sep 26–30

|582 (LV)

| –

|18%

|1%

|5%

|5%

|1%

|21%

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

|3%

|12%{{efn|Gabbard with 4%; Klobuchar with 2%; Bennet, Castro, de Blasio, Ryan, Steyer, and Williamson with 1%; Bullock, Delaney, and Sestak with 0%}}

|8%

|Sep 26–30

|1,136 (RV)

| –

|{{party shading/Democratic}}|21%

|1%

|4%

|4%

|2%

|16%

|15%

|3%

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

|{{party shading/Undecided}}|22%

|Sep 23–29

|16,274 (LV)

|± 1.0%

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

|3%

|5%

|6%

|3%

|19%

|21%

|3%

|11%{{efn|Bennet, Bullock, Castro, Delaney, Gabbard, Klobuchar, Ryan, Steyer, and Williamson with 1%; Someone else with 2%}}

| –

| style="text-align:left;"|Monmouth University[https://www.monmouth.edu/polling-institute/documents/monmouthpoll_us_100219.pdf/ Monmouth University]

|Sep 23–29

|434 (RV)

|± 4.7%

|25%

|1%

|5%

|5%

|1%

|15%

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

|2%

|5%{{efn|Williamson with 2%; Castro, Klobuchar and Steyer with 1%; Bennet and Ryan with 0%; Bullock, Delaney, Gabbard and Sestak with less than 1%}}

|10%

|Sep 20–27

|2,780 (LV)

|± 2.3%

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

|2%

|4%

|5%

|3%

|16%

|16%

|2%

|11%{{efn|Castro with 2%; Bennet, Bullock, Delaney, Gabbard, Klobuchar, Ryan, Sestak, Steyer and Williamson with 1%; Messam and someone else with 0%; would not vote with 1%}}

|13%

|Sep 23–24

|495 (RV)

| –

|{{party shading/Democratic}}|22%

|1%

|4%

|4%

|1%

|14%

|17%

|1%

|8%{{efn|Steyer with 2%; Castro, Gabbard and Klobuchar with 1%; Bennet, Bullock, Delaney, Messam, Ryan, Sestak and Williamson with 0%; others with 3%; won't vote with 3%}}

|22%

|Sep 22–24

|693 (RV)

| –

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

|2%

|3%

|6%

|3%

|16%

|17%

|3%

|7%{{efn|Castro and Steyer with 2%; Gabbard and Klobuchar with 1%; Delaney, Gillibrand, Gravel, Messam, Ryan and Williamson with 0%; others with 1%; "won't vote" with 3%}}

|9%

|Sep 22–24

|608 (LV)

| –

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

|0%

|7%

|6%

|2%

|16%

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

|2%

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

|10%

|Sep 21–23

|462 (RV)

|± 4.6%

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

|2%

|6%

|4%

|1%

|22%

|23%

|8%

|8%{{efn|Castro with 2%; Gabbard, Ryan, Sestak, and Williamson with 1%; Bennet, Bullock, Delaney, Klobuchar, Messam, and Steyer with 0%; "Someone else" with 2%}}

| –

| style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/images/polling/us/us09252019_umpj13.pdf/ Quinnipiac University] {{Webarchive|url=https://web.archive.org/web/20190925110211/https://poll.qu.edu/images/polling/us/us09252019_umpj13.pdf/ |date=September 25, 2019 }}

|Sep 19–23

|561 (RV)

|± 4.9%

|25%

|0%

|7%

|3%

|2%

|16%

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

|2%

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

|13%

|Sep 19–22

|1,200 (LV)

|± 2.8%

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

|3%

|5%

|7%

|3%

|15%

|17%

|2%

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

|5%

|Sep 16–22

|17,377 (LV)

|± 1.0%

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

|3%

|5%

|6%

|3%

|19%

|20%

|3%

|12%{{efn|Klobuchar with 2%; Bennet, Bullock, Castro, Delaney, Gabbard, Ryan, Steyer and Williamson with 1%; Someone else with 2%}}

| –

|Sep 20–21

|440 (RV)

|± 4.7%

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

|2%

|5%

|5%

|4%

|16%

|14%

|2%

|12%{{efn|"Other" with 1%; Castro with 3%; Klobuchar with 2%; Gabbard, Bennet, Delaney, Steyer, Messam, and Ryan with 1%; Sestak, Bullock and Williamson with 0%}}

|11%

|Sep 16–20

|2,692 (A)

| –

|{{party shading/Democratic}}|19%

|2%

|3%

|4%

|3%

|17%

|12%

|3%

|13%{{efn|Castro, Gabbard, Klobuchar and Williamson with 1%; Messam, Sestak and Steyer with 0%; can't/won't vote with 6%; other with 3%}}

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

|Sep 13–20

|1,831 (RV)

|± 2.3%

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

|3%

|5%

|6%

|3%

|15%

|17%

|2%

|8%{{efn|Bennet, de Blasio, Bullock, Castro, Delaney, Gabbard, Klobuchar and Steyer with 1%; Messam, Ryan, Sestak and Williamson with 0%}}

|9%

|Sep 16–17

|601 (LV)

|± 4.0%

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

|4%

|6%

|5%

|3%

|17%

|17%

|2%

|7%{{efn|Klobuchar with 3%; "Someone else" and Castro with 2%}}

|6%

| style="text-align:left;"|Fox News[https://www.scribd.com/document/426593447/Fox-News-Poll-results-September-15-17-2019 Fox News]

|Sep 15–17

|480 (LV)

|± 4.5%

|{{party shading/Democratic}}| 29%

|3%

|5%

|7%

|4%

|18%

|16%

|2%

|5%{{efn|Klobuchar with 2%; Bennet, Delaney and Steyer with 1%; Williamson with 0%; Bullock, Castro, de Blasio, Gabbard, Messam, Ryan and Sestak with less than 0.5%}}

|8%

|Sep 14–17

|603 (LV)

| –

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

|2%

|8%

|5%

|3%

|15%

|19%

|3%

|8%{{efn|Gabbard with 2%; Klobuchar, Castro, Bennet, Williamson, Bullock and Delaney with 1%; de Blasio, Steyer, Ryan, Messam and Sestak with 0%}}

|8%

| style="text-align:left;"|NBC News/
Wall Street Journal[https://s.wsj.net/public/resources/documents/19357NBCWSJSeptemberDemocraticPrimaryVoters.pdf NBC News/
Wall Street Journal]

|Sep 13–16

|506 (LV)

|± 4.4%

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

|2%

|7%

|5%

|1%

|14%

|25%

|4%

|8%{{efn|Klobuchar with 2%; Gabbard, Delaney, Steyer, Bennet, de Blasio and Castro with 1%; Bullock, Ryan and Williamson with less than 0.5%}}

|2%

|Sep 13–16

|1,017 (LV)

|± 3.4%

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

|4%

|5%

|6%

|4%

|17%

|19%

|3%

|3%{{efn|"Some Other Democrat", Castro and Klobuchar with 1%}}

|6%

|Sep 13–16

|1,291 (LV)

|± 3.1%

|24%

|1%

|7%

|6%

|2%

|14%

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

|2%

|6%{{efn|Gabbard with 2%; Bullock, Castro, Klobuchar, Steyer with 1%; Bennet, de Blasio, Delaney, Ryan and Williamson with 0%}}

|7%

|Sep 13–15

|7,487 (LV)

|± 1.0%

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

|3%

|5%

|6%

|4%

|20%

|18%

|3%

|10%{{efn|Klobuchar with 2%; Bullock, Castro, Delaney, Gabbard, Ryan, Steyer and Williamson with 1%; Bennet and de Blasio with 0%; Someone else with 1%}}

| –

|Sep 6–13

|2,808 (LV)

|± 2.3%

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

|2%

|4%

|6%

|3%

|16%

|12%

|3%

|12%{{efn|Bennet, de Blasio, Bullock, Castro, Delaney, Gabbard, Klobuchar, Ryan, Sestak and Steyer with 1%; Messam, and Williamson and someone else with 0%; would not vote with 0%}}

|11%

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

| style="border-right-style:hidden;"| Sep 12

| colspan=14| Third Democratic primary debate

|Sep 7–11

|241 (LV)

| –

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

|4%

|4%

|4%

|1%

|21%

|19%

|2%

|8%{{efn|Klobuchar and Gabbard with 2%; "Other", Castro, Williamson and Ryan with 1%; Bennet with 0%; de Blasio, Delaney, Steyer, Bullock, Messam and Sestak with less than 0.5%}}

|5%

|Sep 9–10

|557 (RV)

| –

|{{party shading/Democratic}}| 22%

|3%

|4%

|4%

|2%

|16%

|11%

|3%

|7%{{efn|"Other" with 2%; Gabbard, Klobuchar, Steyer, Castro and Ryan with 1%; Williamson, Sestak, Bullock, Messam, de Blasio and Bennet with 0%}}

|20%

|Sep 8–10

|632 (LV)

| –

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

|2%

|5%

|6%

|1%

|17%

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

|2%

|11%{{efn|Castro and Williamson with 2%; Bennet, Bullock, de Blasio, Delaney, Gabbard, Klobuchar, and Ryan with 1%; Messam, Sestak, and Steyer with 0%}}

|10%

|Sep 7–10

|454 (LV)

| –

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

|4%

|6%

|6%

|3%

|21%

|12%

|2%

|11%{{efn|Castro, Gabbard and Williamson with 2%; Bennet, de Blasio, Bullock, Klobuchar and Ryan with 1%; Delaney, Messam, Sestak, and Steyer with 0%}}

|9%

| style="text-align:left;"|CNN/SSRS[http://cdn.cnn.com/cnn/2019/images/09/11/rel10b.-.2020.pdf CNN/SSRS]

|Sep 5–9

|908 (RV)

|± 4.3%

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

|2%

|6%

|8%

|5%

|17%

|18%

|2%

|10%{{efn|Gabbard with 2%; Bennet, Castro, de Blasio, Klobuchar, Ryan, Williamson and Steyer with 1%; Bullock, Delaney and Sestak with less than 0.5%; "Someone else" with 1%}}

|6%

|Sep 7–8

|454 (RV)

|± 3.1%

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

|3%

|4%

|7%

|3%

|15%

|11%

|5%

|10%{{efn|Castro with 2%; Bennet, Bullock, Delaney, Gabbard, Klobuchar, Sestak, Steyer, and Other with 1%; de Blasio, Messam, Ryan, Williamson with 0%; Someone else with 2%}}

|15%

|Sep 2–8

|17,824 (LV)

|± 1.0%

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

|3%

|5%

|7%

|3%

|21%

|16%

|3%

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

| –

|Aug 12 – Sep 8

|2,462 (LV)

|± 2.0%

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

|2%

|4%

|8%

|3%

|13%

|11%

|2%

|4%{{efn|Gabbard and Klobuchar with 1%; Castro with 0%; others with 2%}}

|24%

|Sep 2–6

|1,002 (LV)

| –

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

|2%

|6%

|8%

|3%

|16%

|24%

|2%

|11%{{efn|Gabbard with 2%; Bennet, de Blasio, Castro, Delaney, Klobuchar, Ryan, Steyer and Williamson with 1%; Bullock, Messam and Sestak and with 0%}}

| –

|Aug 30 – Sep 6

|2,878 (LV)

| –

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

|2%

|5%

|7%

|3%

|18%

|13%

|2%

|10%{{efn|Bennet, Bullock, Castro, de Blasio, Gabbard, Klobuchar, Ryan, Steyer, and Williamson with 1%; Delaney, Messam, Sestak and someone else with 0%; would not vote with 1%}}

|12%

| style="text-align:left;"|ABC News/
Washington Post[https://games-cdn.washingtonpost.com/notes/prod/default/documents/c9b1e401-36b4-420e-953c-741837849c5d/note/bfa3f530-447d-4df9-b55c-90a8ad641ef8.pdf ABC News/
Washington Post]

|Sep 2–5

|437 (A)

|± 5.5%

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

|1%

|4%

|7%

|3%

|19%

|17%

|3%

|4%{{efn|de Blasio, Delaney, Gabbard and Klobuchar with 1%; Bennet, Bullock, Castro, Ryan, Steyer and Williamson with less than 0.5%, Other with less than 0.5%}}

|6%

|Sep 1–3

|518 (LV)

| –

|{{party shading/Democratic}}| 26%

|1%

|6%

|5%

|1%

|14%

|21%

|3%

|12%{{efn|Gabbard with 3%; Castro and de Blasio with 2%; Bennet, Delaney, Messam, Ryan and Williamson with 1%; Bullock, Klobuchar, Sestak and Steyer with 0%}}

|12%

|Aug 31 – Sep 1

| ≈670 (RV){{efn|name="671kRV"}}

| –

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

|2%

|4%

|5%

|2%

|12%

|11%

|2%

|19%{{efn|Bullock, Castro, DeBlasio, Klobuchar, Gabbard, Ryan, Steyer and Williamson with 1%; Bennet, Delaney, Sestak and "someone else" with 0%; "Do not plan to vote in the Democratic primary" with 11%}}

|13%

|Aug 26 – Sep 1

|16,736 (LV)

|± 1.0%

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

|3%

|5%

|8%

|3%

|20%

|16%

|3%

|10%{{efn|Bennet, Bullock, Castro, Delaney, Gabbard, Klobuchar, Ryan, Steyer and Williamson with 1%, de Blasio with 0%; Someone else with 1%}}

| –

|+August 2019 polling

! style="background-position: right 85%;" | Poll source

! style="background-position: right 85%;" | Date(s)
administered

! style="background-position: right 85%;" | Sample
size{{efn|name=key}}

! style="background-position: right 85%;" | Margin
{{nowrap|of error}}

! {{vert header|stp=1|Joe Biden}}

! {{vert header|stp=1|Cory Booker}}

! {{vert header|stp=1|Pete Buttigieg}}

! {{vert header|stp=1|Kamala Harris}}

! {{vert header|stp=1|Beto O'Rourke}}

! {{vert header|stp=1|Bernie Sanders}}

! {{vert header|stp=1|Elizabeth Warren}}

! {{vert header|stp=1|Andrew Yang}}

! {{vert header|stp=1|mw=4|Other}}

! {{vert header|stp=1|Undecided}}

|Aug 23–30

|3,114 (RV)

| –

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

|3%

|3%

|6%

|3%

|15%

|11%

|2%

|12%{{efn|Castro with 2%; Bennet, Bullock, Delaney, Gabbard, Gillibrand, Klobuchar, Ryan, Williamson, Sestak, and Steyer with 1%; Messam with 0%}}

|12%

|Aug 22–30

|360 (RV)

| –

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

|4%

|5%

|6%

|0%

|12%

|24%

|1%

|3%{{efn|"Someone else", Klobuchar and Castro with 1%; Williamson, Gabbard, Bennet, Inslee, and Hickenlooper with 0%; Ryan, de Blasio, Delaney, Bullock, Gillibrand, Moulton, Messam, Sestak and Steyer with less than 0.5%}}

|15%

|Aug 28–29

|752 (RV)

|

|{{party shading/Democratic}}| 22%

|3%

|3%

|5%

|4%

|19%

|14%

|2%

|10%{{efn|Other with 6%; Klobuchar with 2%; Williamson & Castro with 1%; Steyer with 0%}}

|21%

|Aug 26–28

|985 (RV)

|

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

|3%

|4%

|7%

|4%

|16%

|13%

|2%

|6%{{efn|Gabbard, Klobuchar, Castro, Steyer, Delaney and other with 1%; Williamson, Gillibrand, Messam, and Ryan with 0%}}

|11%

|Aug 24–27

|1093 (RV)

|± 3.1%

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

|2%

|5%

|8%

|2%

|14%

|21%

|2%

|8%{{efn|Gabbard with 2%; Bennet, Bullock, Castro, de Blasio, Klobuchar, Steyer, and Williamson with 1%; Delaney, Gillibrand, Messam, and Sestak with 0%}}

|12%

|Aug 24–26

|627 (RV)

|± 3.9%

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

|3%

|3%

|10%

|2%

|24%

|15%

|4%

|8%{{efn|Gabbard with 3%; Castro and Klobuchar with 1%; Bennet, Bullock, de Blasio, Delaney, Gillibrand, Messam, Moulton, Ryan, Sestak, Steyer, and Williamson with 0%; Someone else with 1%}}

|–

|Aug 23–26

|874 (LV)

|± 3.3%

|19%

|3%

|9%

|6%

|3%

|22%

|{{party shading/Democratic}}| 29%

|2%

|7%{{efn|Castro and Gabbard with 2%; Klobuchar, Williamson and Steyer with 1%; Delaney, Bennet, de Blasio, Sestak, Bullock and Gillibrand with 0%}}

| –

| style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/images/polling/us/us08282019_upjp68.pdf/ Quinnipiac University] {{Webarchive|url=https://web.archive.org/web/20210116082132/https://poll.qu.edu/images/polling/us/us08282019_upjp68.pdf |date=January 16, 2021 }}

|Aug 21–26

|648 (RV)

|± 4.6%

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

|1%

|5%

|7%

|1%

|15%

|19%

|3%

|6%{{efn|Bennet, Bullock, de Blasio, Gabbard, Klobuchar, and Williamson with 1%; Castro, Delaney, Gillibrand, Ryan, Sestak, and Steyer with 0%}}

|11%

| style="text-align:left;"|Suffolk University/
USA Today[https://www.suffolk.edu/-/media/suffolk/documents/academics/research-at-suffolk/suprc/polls/national/2019/9_9_2019_marginals_pdftxt.pdf Suffolk University/
USA Today]

|Aug 20–25

|424 (LV)

|± 4.8%

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

|2%

|6%

|6%

|2%

|12%

|14%

|3%

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

|21%

|Aug 19–25

|17,303 (LV)

|± 1.0%

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

|3%

|5%

|8%

|3%

|20%

|15%

|2%

|9%{{efn|Bennet, Bullock, Castro, de Blasio, Delaney, Gabbard, Gillibrand, Klobuchar, Ryan, Steyer and Williamson with 1% or less; Someone else with 2%}}

| –

|Aug 23–24

|465 (RV)

|–

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

|2%

|4%

|4%

|3%

|17%

|14%

|2%

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

|15%

|Aug 16–23

|3,132 (RV)

|–

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

|4%

|3%

|8%

|4%

|17%

|10%

|2%

|10%{{efn|Bullock, Castro, de Blasio, Gabbard, Gillibrand, Inslee, Klobuchar, Ryan, Williamson, and Steyer with 1%; Bennet, Delaney, Messam, Moulton and Sestak with 0%}}

|13%

|Aug 19–21

|479 (RV)

|–

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

|4%

|3%

|11%

|4%

|19%

|11%

|1%

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

|14%

|Aug 17–20

|559 (LV)

|–

|{{party shading/Democratic}}| 22%

|2%

|7%

|8%

|3%

|19%

|17%

|1%

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

|12%

| style="text-align:left;"|Monmouth University[https://www.monmouth.edu/polling-institute/documents/monmouthpoll_us_082619.pdf/ Monmouth University]

|Aug 16–20

|298 (RV)

|± 5.7%

|19%

|4%

|4%

|8%

|2%

|{{party shading/Democratic}}| 20%

|{{party shading/Democratic}}| 20%

|3%

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

|10%

| style="text-align:left;"|CNN/SSRS[http://cdn.cnn.com/cnn/2019/images/08/19/rel9a.-.democrats.2020.pdf CNN/SSRS]

|Aug 15–18

|402 (RV)

|± 6.1%

|{{party shading/Democratic}}| 29%

|2%

|5%

|5%

|3%

|15%

|14%

|1%

|10%{{efn|Castro and Gabbard with 2%; Bullock, Klobuchar, Ryan, and Steyer with 1%; Bennet, de Blasio, Delaney, Gillibrand, Inslee, Messam, Moulton, Sestak and Williamson with 0%; Others with 2%}}

|10%

|Aug 12–18

|17,115 (LV)

|–

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

|3%

|5%

|9%

|3%

|20%

|15%

|3%

|8%{{efn|Bullock, Castro, Delaney, Gabbard, Gillibrand, Klobuchar, Ryan, Steyer and Williamson with 1%; Bennet, de Blasio, Inslee and Moulton with 0%; Someone else with 2%}}

| –

|Aug 9–16

|3,118 (RV)

|–

|{{party shading/Democratic}}| 29%

|2%

|4%

|7%

|4%

|15%

|11%

|2%

|10%{{efn|Bennet, Castro, de Blasio, Delaney, Gabbard, Gillibrand, Hickenlooper, Klobuchar, Ryan, and Steyer with 1%; Bullock, Inslee, Messam, Moulton, Sestak, and Williamson with 0%}}

|13%

| style="text-align:left;"|Fox News[https://www.scribd.com/document/422003960/Fox-August-11-13-2019-Complete-National-Topline-August-15-Release Fox News]

|Aug 11–13

|483 (LV)

|± 4.5%

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

|3%

|3%

|8%

|2%

|10%

|20%

|3%

|10%{{efn|Klobuchar with 2%; Castro, de Blasio, Delaney, Gabbard, Gillibrand, Steyer and Williamson with 1%; "other" with 1%; Messam and Sestak with 0%; Bennet, Bullock, Hickenlooper, Inslee, Moulton, and Ryan with less than 0.5%}}

|8%

|Aug 10–13

|592 (LV)

|–

|{{party shading/Democratic}}| 21%

|2%

|5%

|8%

|5%

|16%

|20%

|1%

|8%{{efn|Gabbard with 2%; Bennet, Klobuchar, Castro, Gillibrand, Steyer, and Williamson with 1%; Bullock, de Blasio, Delaney, Hickenlooper, Inslee, Messam, Moulton, Ryan and Sestak with 0%}}

|11%

| Aug 5–11

| 17,117 (LV)

| ± 1.0%

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

| 3%

| 5%

| 9%

| 3%

| 20%

| 14%

| 2%

| 13%{{efn|Bennet, Bullock, de Blasio, Castro, Delaney, Gabbard, Gillibrand, Hickenlooper, Inslee, Klobuchar, Moulton, Ryan, Steyer and Williamson with <1%; others with 2%}}

| –

|Aug 9–10

|451 (RV)

|–

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

|1%

|4%

|7%

|4%

|16%

|10%

|1%

|14%{{efn|Bullock, Castro, Klobuchar and Williamson with 2%; Delaney, Gabbard, Gillibrand, Ryan, Sestak, and Steyer with 1%; Bennet, de Blasio, Hickenlooper, Inslee, Messam, and Moulton with 0%}}

|10%

|Aug 2–9

|3,088 (RV)

| –

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

|3%

|4%

|7%

|3%

|16%

|10%

|1%

|12%{{efn|Castro with 2%; Bennet, de Blasio, Gabbard, Gillibrand, Hickenlooper, Inslee, Klobuchar, Ryan, Steyer, and Williamson with 1%; Bullock, Delaney, Messam, Moulton, and Sestak with 0%}}

|16%

|Aug 3–6

|573 (LV)

| –

|{{party shading/Democratic}}| 22%

|1%

|8%

|8%

|2%

|13%

|16%

|2%

|12%{{efn|Gabbard with 3%; Bennet, Bullock, Castro, de Blasio, Delaney, Inslee, and Steyer with 1%; Gillibrand, Gravel, Hickenlooper, Klobuchar, Messam, Moulton, Ryan, Sestak, and Williamson with 0%}}

|14%

|Aug 1–5

|999 (LV)

|± 4.1%

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

|1%

|8%

|9%

|1%

|20%

|19%

|0%

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

|7%

|Aug 1–5

|1,258 (A)

|± 3.0%

|{{party shading/Democratic}}| 22%

|3%

|4%

|6%

|2%

|18%

|9%

|2%

|13%{{efn|Castro, de Blasio, Gabbard, Klobuchar, and Ryan with 1%; Bennet, Bullock, Delaney, Gillibrand, Gravel, Hickenlooper, Inslee, Messam, Moulton, Steyer, and Williamson with 0%; others with 3%}}

|21%

| style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/images/polling/us/us08062019_ubrt73.pdf/ Quinnipiac University] {{Webarchive|url=https://web.archive.org/web/20190806185257/https://poll.qu.edu/images/polling/us/us08062019_ubrt73.pdf/ |date=August 6, 2019 }}

|Aug 1–5

|807 (RV)

|± 4.1%

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

|2%

|5%

|7%

|2%

|14%

|21%

|1%

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

|10%

|Aug 2–4

|1,450

|± 3.0%

|23%

|2%

|9%

|7%

|2%

|23%

|{{party shading/Democratic}}| 26%

|2%

|4%{{efn|Gabbard with 2%; Castro and Klobuchar with 1%; Gillibrand, Moulton, Hickenlooper, Ryan, Williamson, Inslee, Steyer, Gravel, Bennet, de Blasio and Delaney with 0%}}

| –

|Aug 1–4

|588

|± 4.0%

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

|4%

|4%

|10%

|–

|12%

|13%

|2%

|4%{{efn|Bennet and Klobuchar with 2%}}

|14%

|Aug 1–4

|9,845 (LV)

|± 1.0%

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

|3%

|6%

|9%

|3%

|19%

|15%

|2%

|10%{{efn|Bullock, Castro, Delaney, Gabbard, Gillibrand, Klobuchar, Ryan, Steyer, and Williamson with 1%; Bennet, de Blasio, Hickenlooper, Inslee, Moulton with 0%; others with 1%}}

| –

|Jul 22 – Aug 4

|1,757 (RV)

|± 2.9%

|{{party shading/Democratic}}| 26%

|1%

|5%

|11%

|1%

|12%

|16%

|1%

|9%{{efn|"Other" with 7%; Castro and Klobuchar with 1%; de Blasio, Messam, Moulton and Sestak with 0%; Williamson, Gabbard, Gillibrand, Steyer, Bullock, Bennet, Hickenlooper, Inslee, Ryan and Delaney with less than 0.5%}}

|18%

|Jul 31 – Aug 2

|914 (RV)

|± 3.4%

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

|3%

|3%

|8%

|3%

|16%

|8%

|2%

|13%{{efn|Gabbard with 3%; Bennet, Bullock, Castro, Delaney, Gillibrand, Inslee, Klobuchar, Ryan, Steyer, and Williamson with 1%; de Blasio, Gravel, Hickenlooper, Moulton, Messam, and Sestak with 0%}}

|13%

| Aug 1

| 2,419 (LV)

| ± 2.0%

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

| 3%

| 6%

| 10%

| 3%

| 18%

| 15%

| 2%

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

| –

| Jul 31 – Aug 1

| 585

| –

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

| 2%

| 4%

| 9%

| 3%

| 17%

| 8%

| 1%

| 5%{{efn|Castro, Gravel, Klobuchar, Ryan, and Steyer with 1%; Bloomberg, Delaney, Gabbard, Gillibrand, Hickenlooper, Inslee, Messam, Moulton, Swalwell, and Williamson with 0%}}

| 14%

| Jul 25 – Aug 1

| 350 (RV)

| –

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

| 2%

| 6%

| 11%

| 1%

| 12%

| 17%

| 0%

| 7%{{efn|Gabbard, Klobuchar, Inslee and Ryan with 1%; others with 3%}}

| 10%

|+July 2019 polling

! style="background-position: right 85%;" | Poll source

! style="background-position: right 85%;" | Date(s)
administered

! style="background-position: right 85%;" | Sample
size{{efn|name=key}}

! style="background-position: right 85%;" | Margin
{{nowrap|of error}}

! {{vert header|stp=1|Joe Biden}}

! {{vert header|stp=1|Pete Buttigieg}}

! {{vert header|stp=1|Kamala Harris}}

! {{vert header|stp=1|Beto O'Rourke}}

! {{vert header|stp=1|Bernie Sanders}}

! {{vert header|stp=1|Elizabeth Warren}}

! {{vert header|stp=1|mw=4|Other}}

! {{vert header|stp=1|Undecided}}

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

| style="border-right-style:hidden;"| Jul 31

| colspan=14| Second night of the Second Democratic primary debate

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

| style="border-right-style:hidden;"| Jul 30

| colspan=14| First night of the Second Democratic primary debate

| Jul 27–30

| 629 (LV)

| –

| {{party shading/Democratic}}| 26%

| 5%

| 10%

| 2%

| 13%

| 18%

| 11%{{efn|Booker, Castro, and Gabbard with 2%; Bullock, de Blasio, Delaney, Klobuchar, and Yang with 1%; Bennet, Gillibrand, Gravel, Hickenlooper, Inslee, Messam, Moulton, Ryan, Sestak, Steyer, and Williamson with 0%}}

| 11%

| Jul 27–29

| 520

| ± 4.2%

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

| 6%

| 11%

| 4%

| 20%

| 14%

| 11%{{efn|Steyer and Yang with 2%; de Blasio, Castro, Delaney, Hickenlooper, Gabbard, and Gillibrand with 1%; Bennet, Booker, Bullock, Gravel, Inslee, Klobuchar, Messam, Moulton, Ryan, Sestak, and Williamson with 0%; others with 1%}}

| –

| Jul 27–29

| 884 (RV)

| –

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

| 3%

| 7%

| 4%

| 15%

| 9%

| 14%{{efn|Castro and Steyer with 2%; Bennet, Booker, de Blasio, Delaney, Gillibrand, Gravel, Klobuchar, Ryan, and Yang with 1%; Bullock, Gabbard, Hickenlooper, Inslee, Messam, Sestak, and Williamson with 0%}}

| 14%

| Jul 27–28

| 444 (RV)

| ± 4.7%

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

| 5%

| 9%

| 4%

| 20%

| 12%

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

| 8%

| style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/images/polling/us/us07292019_uymr53.pdf/ Quinnipiac University] {{Webarchive|url=https://web.archive.org/web/20190729185509/https://poll.qu.edu/images/polling/us/us07292019_uymr53.pdf/ |date=July 29, 2019 }}

| Jul 25–28

| 579 (RV)

| ± 5.1%

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

| 6%

| 12%

| 2%

| 11%

| 15%

| 6%{{efn|Yang with 2%; Booker, Klobuchar, and Williamson with 1%; Bennet, Bullock, Castro, de Blasio, Delaney, Gabbard, Gillibrand, Gravel, Hickenlooper, Inslee, Messam, Moulton, Ryan, Sestak, and Steyer with 0%}}

| 12%

| Jul 23–28

| 468

| –

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

| 3%

| 10%

| 4%

| 15%

| 9%

| 18%{{efn|Booker with 3%; Yang with 2%; Bullock, Castro, de Blasio, Delaney, Gabbard, Gillibrand, Hickenlooper, Inslee, Ryan, Steyer, and Williamson with 1%; Bennet, Klobuchar, Messam, and Moulton with <1%}}

| 14%

| Jul 22–28

| 16,959 (LV)

| ± 1.0%

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

| 5%

| 12%

| 3%

| 18%

| 13%

| 18%{{efn|Booker with 3%; Yang with 2%; Bennet, Bullock, de Blasio, Castro, Delaney, Gabbard, Gillibrand, Hickenlooper, Inslee, Klobuchar, Moulton, Ryan, Steyer and Williamson with <1%; others with 2%}}

| –

| Jul 18–28

| 471

| –

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

| 8%

| 12%

| 2%

| 22%

| 15%

| 10%{{efn|Klobuchar with 2%; Booker, Gabbard, Gillibrand, and Yang with 1%; Castro, de Blasio, Delaney, Bennet, and Ryan with 0%; others with 1%}}

| 3%

| Jul 23–27

| 510

| ± 4.2%

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

| 5%

| 11%

| 3%

| 14%

| 10%

| 9%{{efn|Gabbard with 2%; Booker, Bullock, Castro, Gillibrand, and Yang with 1%; others with 2%}}

| 16%

| Jul 23–26

| 1,204

| ± 2.8%

| 20%

| 9%

| 15%

| 2%

| 20%

| {{party shading/Democratic}}| 22%

| 12%{{efn|Klobuchar and Yang with 3%; Gabbard with 2%; Booker, Castro, Gillibrand, and Gravel with 1%; Bennet, de Blasio, Delaney, Hickenlooper, Inslee, Moulton, Steyer, and Williamson with 0%}}

| –

| Jul 12–25

| 1,827

| ± 3.0%

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

| 5%

| 10%

| 3%

| 11%

| 10%

| 6%{{efn|Booker, Castro, de Blasio, Klobuchar, Ryan, and Yang with 1%; Bennet, Bullock, Delaney, Gabbard, Gillibrand, Gravel, Hickenlooper, Inslee, Messam, Moulton, Sestak, Steyer, and Williamson with 0%}}

| 25%

| style="text-align:left;"|Fox News[https://www.scribd.com/document/420144129/Fox-news-poll-July-29 Fox News]

| Jul 21–23

| 455 (LV)

| ± 4.5%

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

| 5%

| 10%

| 2%

| 15%

| 12%

| 15%{{efn|Klobuchar and Yang with 3%; Booker and Hickenlooper with 2%; Castro, de Blasio, Delaney, Gillibrand, and Steyer with 1%; Moulton and Sestak with 0%; Bennet, Bullock, Gabbard, Inslee, Messam, Ryan and Williamson with less than 0.5%}}

| 7%

| Jul 21–23

| 600 (LV)

| –

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

| 6%

| 9%

| 2%

| 13%

| 18%

| 16%{{efn|Castro with 3%; Booker, Gabbard, and Yang with 2%; de Blasio, Bullock, Klobuchar, and Steyer with 1%; Bennet, Delaney, Gillibrand, Gravel, Hickenlooper, Inslee, Messam, Moulton, Ryan, Sestak, and Williamson with 0%}}

| 11%

| Jul 15–21

| 17,285 (LV)

| ± 1.0%

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

| 5%

| 13%

| 3%

| 18%

| 14%

| 10%{{efn|Booker and Yang with 2%; Bennet, de Blasio, Bullock, Castro, Delaney, Gabbard, Gillibrand, Hickenlooper, Inslee, Klobuchar, Ryan, Steyer, Moulton and Williamson with <1%; others with 2%}}

| –

| Jul 15–17

| 910 (RV)

| –

| {{party shading/Democratic}}| 26%

| 4%

| 10%

| 4%

| 14%

| 9%

| 11%{{efn|Booker with 2%; Castro, Delaney, Gillibrand, Hickenlooper, Klobuchar, Moulton, Ryan, Steyer, and Yang with 1%; Bennet, de Blasio, Bullock, Gabbard, Gravel, Inslee, Messam, Sestak, and Williamson with 0%}}

| 18%

| Jul 14–16

| 572 (LV)

| –

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

| 7%

| 10%

| 2%

| 13%

| 15%

| 13%{{efn|Booker with 3%; de Blasio with 2%; Bennet, Bullock, Castro, Gabbard, Gillibrand, Klobuchar, Steyer, and Yang with 1%; Delaney, Gravel, Hickenlooper, Inslee, Messam, Moulton, Ryan, Sestak, and Williamson with 0%}}

| 14%

| style="text-align:left;"|NBC News/SurveyMonkey[https://www.documentcloud.org/documents/6206543-NBC-News-SurveyMonkey-National-Poll-Toplines.html NBC News/SurveyMonkey]

| Jul 2–16

| 5,548 (RV)

| ± 2.0%

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

| 8%

| 14%

| 3%

| 16%

| 16%

| 14%{{efn|Booker with 3%; Castro and Yang with 2%; Bennet, de Blasio, Gabbard, Gillibrand, Klobuchar, Ryan, and Williamson with 1%; Bullock, Delaney, Gravel, Hickenlooper, Inslee, Messam, Moulton, and Sestak with 0%}}

| 5%

| Jul 8–14

| 16,504 (LV)

| ± 1.0%

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

| 5%

| 13%

| 3%

| 19%

| 14%

| 10%{{efn|Booker and Yang with 2%; Bennet, de Blasio, Bullock, Castro, Delaney, Gabbard, Gillibrand, Hickenlooper, Inslee, Klobuchar, Ryan, Swalwell, Moulton and Williamson with <1%; others with 2%}}

| –

| Jul 12–13

| 446 (RV)

| ± 3.1%

| {{party shading/Democratic}}| 29%

| 1%

| 11%

| 3%

| 16%

| 9%

| 13%{{efn|Booker, Bullock, Castro, de Blasio, Delaney, Gabbard, Gillibrand, Gravel, Klobuchar, Messam, Moulton and Ryan with 1%; Bennet, Hickenlooper, Inslee, Sestak, Steyer, Williamson, and Yang with 0%; others with 1%}}

| 17%

| style="text-align:left;"|NBC News/Wall Street Journal[http://www.documentcloud.org/documents/6192907-NBCWSJ-July-Poll.html NBC News/Wall Street Journal]

| Jul 7–9

| 400 (LV)

| ± 4.9%

| {{party shading/Democratic}}| 26%

| 7%

| 13%

| 2%

| 13%

| 19%

| 10%{{efn|Yang with 2%; Bennet, Booker, Castro, Delaney, Hickenlooper, Inslee, Klobuchar and Williamson with 1%; others with 0%}}

| 8%

| Jul 7–9

| 592 (LV)

| –

| {{party shading/Democratic}}| 22%

| 6%

| 15%

| 1%

| 12%

| 18%

| 11%{{efn|Booker, Castro and Gabbard with 2%; Bullock, de Blasio, Hickenlooper, Klobuchar, and Yang with 1%; Bennet, Delaney, Gillibrand, Gravel, Inslee, Messam, Moulton, Ryan, Sestak, Swalwell, and Williamson with 0%}}

| 13%

| Jul 6–8

| 481

| ± 4.4%

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

| 5%

| 15%

| 4%

| 15%

| 15%

| 16%{{efn|Yang with 3%; Booker and Gabbard with 2%; Bennet, Bullock, Gravel, Inslee, Klobuchar, and Swalwell with 1%; de Blasio, Castro, Delaney, Gillibrand, Hickenlooper, Messam, Ryan, Sestak, and Williamson with 0%; others with 3%}}

| –

| Jul 1–7

| 16,599 (LV)

| ± 1.0%

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

| 6%

| 14%

| 3%

| 19%

| 13%

| 15%{{efn|Booker with 2%; Bullock, Castro, de Blasio, Delaney, Gabbard, Gillibrand, Hickenlooper, Klobuchar, Ryan, Williamson, and Yang with 1%; Bennet, Inslee, and Moulton with 0%; others with 2%}}

| –

| Jun 30 – Jul 2

| 631 (LV)

| –

| {{party shading/Democratic}}| 21%

| 9%

| 13%

| 3%

| 10%

| 18%

| 11%{{efn|Booker and Castro with 2%; Bennet, Bullock, de Blasio, Gabbard, Gillibrand, Inslee, and Klobuchar with 1%; Delaney, Gravel, Hickenlooper, Messam, Moulton, Ryan, Sestak, Swalwell, Williamson, and Yang with 0%}}

| 12%

| Jun 28 – Jul 2

| 1,367

| ± 3.0%

| {{party shading/Democratic}}| 22%

| 3%

| 10%

| 3%

| 16%

| 9%

| 9%{{efn|Yang with 2%; Booker, Bullock, Castro, Gillibrand, and Ryan with 1%; Bennet, de Blasio, Delaney, Gabbard, Gravel, Hickenlooper, Inslee, Klobuchar, Messam, Moulton, Sestak, Swalwell, and Williamson with 0%; others with 2%}}

| 21%

| Jun 27 – Jul 2

| 1,522

| –

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

| 7%

| 17%

| 2%

| 15%

| 22%

| 10%{{efn|Booker and Yang with 2%; Castro, Delaney, Gabbard, Hickenlooper, Inslee, and Klobuchar with 1%; Bennet, Bullock, de Blasio, Gillibrand, Gravel, Messam, Moulton, Ryan, Sestak, Swalwell, and Williamson with 0%}}

| –

| Jun 29 – Jul 1

| 882 (RV)

| ± 3.4%

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

| 4%

| 13%

| 3%

| 14%

| 9%

| 15%{{efn|Booker and Castro with 2%; Bennet, de Blasio, Delaney, Gabbard, Gillibrand, Hickenlooper, Klobuchar, Ryan, Swalwell, Williamson, and Yang with 1%; Bullock, Gravel, Inslee, Messam, Moulton, and Sestak with 0%; others with 0%}}

| 12%

| style="text-align:left;"|ABC News/Washington Post[https://games-cdn.washingtonpost.com/notes/prod/default/documents/2557e081-f90a-4c44-a04e-9c98f04bb725/note/d1660489-1b82-43c7-afce-812d2861ecf7.pdf ABC News/Washington Post]

| Jun 28 – Jul 1

| 460 (A)

| ± 5.5%

| {{party shading/Democratic}}| 29%

| 4%

| 11%

| 2%

| 23%

| 11%

| 13%{{efn|Castro with 4%; Klobuchar with 2%; Bennet, Booker, Gabbard, Hickenlooper, Inslee, Yang and Williamson with 1%; de Blasio, Delaney, Moulton, and Swalwell with 0%; others with less than 0.5%}}

| 6%

| Jun 28 – Jul 1

| 1,185

| ± 2.9%

| 18%

| 10%

| 21%

| 2%

| 17%

| {{party shading/Democratic}}| 22%

| 8%{{efn|Yang with 2%; Castro, Delaney, Gabbard, Gillibrand, Klobuchar, and Williamson with 1%; Bennet, Booker, Bullock, de Blasio, Gravel, Hickenlooper, Inslee, Messam, Moulton, Ryan, Sestak, and Swalwell with 0%}}

| –

| style="text-align:left;"|Quinnipiac University[https://poll.qu.edu/images/polling/us/us07022019_umfj23.pdf Quinnipiac University]

| Jun 28 – Jul 1

| 554 (RV)

| ± 5.0%

| {{party shading/Democratic}}| 22%

| 4%

| 20%

| 1%

| 13%

| 14%

| 7%{{efn|Booker with 3%; Castro, Gabbard, Klobuchar, and Yang with 1%; Bennet, Bullock, de Blasio, Delaney, Gillibrand, Gravel, Hickenlooper, Inslee, Messam, Moulton, Ryan, Sestak, Swalwell, and Williamson with <1%; others with <1%}}

| 12%

|+April–June 2019 polling

! style="background-position: right 85%;" | Poll source

! style="background-position: right 85%;" | Date(s)
administered

! style="background-position: right 85%;" | Sample
size{{efn|name=key}}

! style="background-position: right 85%;" | Margin
{{nowrap|of error}}

! {{vert header|stp=1|Joe Biden}}

! {{vert header|stp=1|Cory Booker}}

! {{vert header|stp=1|Pete Buttigieg}}

! {{vert header|stp=1|Kamala Harris}}

! {{vert header|stp=1|Beto O'Rourke}}

! {{vert header|stp=1|Bernie Sanders}}

! {{vert header|stp=1|Elizabeth Warren}}

! {{vert header|stp=1|mw=4|Other}}

! {{vert header|stp=1|Undecided}}

| style="text-align:left;"|CNN/SSRS[https://cdn.cnn.com/cnn/2019/images/07/01/rel8a.-.democrats.and.healthcare.pdf CNN/SSRS]

| Jun 28–30

| 656 (RV)

| ± 4.7%

| {{party shading/Democratic}}| 22%

| 3%

| 4%

| 17%

| 3%

| 14%

| 15%

| 8%{{efn|Klobuchar with 2%; Castro, de Blasio, Gabbard, and Yang with 1%; Bennet, Delaney, Gillibrand, Hickenlooper, Inslee, Moulton, Ryan, Swalwell, and Williamson with <1%; Bullock and Messam with 0%; others with 2%}}

| 9%

| Jun 28–30

| 909 (RV)

| ± 3.4%

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

| 2%

| 4%

| 11%

| 3%

| 14%

| 8%

| 10%{{efn|Castro with 2%; Delaney, Gabbard, Gillibrand, Hickenlooper, Inslee, Klobuchar, Ryan, and Yang with 1%; Bennet, Bullock, de Blasio, Gravel, Messam, Moulton, Sestak, Swalwell, and Williamson with 0%; others with 0%}}

| 15%

| Jun 27–30

| 2,485 (LV)

| ± 2%

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

| 2.5%

| 5.9%

| 16.8%

| 2.1%

| 16.8%

| 14.4%

| 6.7%{{efn|Castro with 1.7%; Yang with 0.8%; Klobuchar and Gabbard with 0.6%; Bennet and Gillibrand with 0.5%; Delaney and Hickenlooper with 0.4%; Ryan with 0.3%; de Blasio and Inslee with 0.2%; Swalwell and Williamson with 0.1%; others with 0.3%}}

| 3.9%

| Jun 26–29

| 845

| –

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

| 3%

| 3%

| 9%

| 2%

| 15%

| 11%

| 10%{{efn|Gabbard with 2%; Bloomberg, Castro, Delaney, Gillibrand, Hickenlooper, Klobuchar, Ryan, and Yang with 1%; Gravel, Inslee, Messam, Moulton, Swalwell, and Williamson with 0%; others with 0%}}

| 9%

| Jun 27–28

| 2,407 (LV)

| ± 2%

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

| 3%

| 6%

| 12%

| 2%

| 19%

| 12%

| 13%{{efn|Yang with 2%; Bullock, Castro, de Blasio, Delaney, Gabbard, Gillibrand, Klobuchar, Moulton, and Ryan with 1%; Bennet, Hickenlooper, Inslee, Swalwell, and Williamson with 0%; others with 2%}}

| –

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

| style="border-right-style:hidden;"| Jun 27

| colspan=14| Second night of the first Democratic primary debate

| Jun 26–27

| 2,041 (LV)

| ± 2%

| {{party shading/Democratic}}| 33.7%

| 3.6%

| 4.8%

| 6.6%

| 3.1%

| 17.8%

| 17.7%

| 9.6%{{efn|Castro with 2.5%; Yang with 1.3%; Klobuchar with 0.9%; Gabbard, Gillibrand and Ryan with 0.7%; de Blasio, Delaney, and Inslee with 0.6%; Hickenlooper with 0.4%; Bennet with 0.3%; Swalwell with 0.1%; Williamson with 0%; someone else with 0.2%}}

| 3.3%

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

| style="border-right-style:hidden;"| Jun 26

| colspan=14| First night of the first Democratic primary debate

| Jun 25–26

| 1,402

| –

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

| 2%

| 7%

| 7%

| 3%

| 16%

| 24%

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

| –

| Jun 24–26

| 892 (RV)

| ± 3.4%

| {{party shading/Democratic}}| 29%

| 1%

| 3%

| 6%

| 4%

| 17%

| 9%

| 12%{{efn|Inslee with 2%; Bennet, Castro, de Blasio, Delaney, Gillibrand, Hickenlooper, Klobuchar, Moulton, Williamson, and Yang with 1%; Bullock, Gabbard, Gravel, Messam, Ryan, Sestak, and Swalwell with 0%; others with 0%}}

| 15%

| Jun 22–25

| 484

| –

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

| 2%

| 9%

| 6%

| 3%

| 15%

| 11%

| 6%{{efn|De Blasio, Hickenlooper, Inslee, Klobuchar, and Yang with 1%; Bennet, Bullock, Castro, Delaney, Gabbard, Gillibrand, Gravel, Messam, Moulton, Ryan, Swalwell, and Williamson with 0%; others with 1%}}

| 19%

| Jun 22–25

| 522 (LV)

| –

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

| 2%

| 5%

| 7%

| 3%

| 15%

| 18%

| 11%{{efn|Gabbard with 3%; Bennet, Bullock, Castro, de Blasio, Gillibrand, Klobuchar, Moulton, and Yang with 1%; Delaney, Gravel, Hickenlooper, Inslee, Messam, Ryan, Swalwell, and Williamson with 0%}}

| 12%

| Jun 21–24

| 457

| ± 4.5%

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

| 3%

| 6%

| 7%

| 1%

| 27%

| 14%

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

| –

| Jun 18–24

| 459

| –

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

| 2%

| 6%

| 6%

| 4%

| 17%

| 11%

| 11%{{efn|De Blasio, Gabbard, Inslee, Klobuchar, Messam, Moulton, Swalwell, and Yang with 1%; Bennet, Bullock, Castro, Delaney, Gillibrand, Gravel, Hickenlooper, Ryan, and Williamson with 0%}}

| 12%

| Jun 17–23

| 16,188 (LV)

| ± 1.0%

| {{party shading/Democratic}}| 38%

| 3%

| 7%

| 6%

| 4%

| 19%

| 13%

| 15%{{efn|Yang with 2%; Bennet, Bullock, Castro, de Blasio, Delaney, Gabbard, Gillibrand, Hickenlooper, Inslee, Klobuchar, and Ryan with 1%; Moulton, Swalwell, and Williamson with 0%; others with 2%}}

| –

| Jun 16–18

| 576 (LV)

| –

| {{party shading/Democratic}}| 26%

| 2%

| 9%

| 7%

| 4%

| 13%

| 14%

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

| 15%

| style="text-align:left;"|Monmouth University[https://www.monmouth.edu/polling-institute/documents/monmouthpoll_us_061919.pdf Monmouth University]