February 3 (41 Delegates)
National | Iowa | N.H. | Nevada | S.C. | California | Texas | Massachusetts | General Election Polls
National | Iowa | New Hampshire | Nevada | South Carolina | California | Texas | Massachusetts | General Election Polls
| Poll | Date | Sample | Sanders | Biden | Buttigieg | Warren | Klobuchar | Yang | Steyer | Gabbard | Bloomberg | Spread |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Final Results | -- | -- | 24.8 | 15.0 | 21.3 | 18.4 | 12.7 | 5.0 | 1.7 | 0.2 | 0.1 | Sanders +3.5 |
| RCP Average | 1/20 - 2/2 | -- | 23.0 | 19.3 | 16.8 | 15.5 | 9.0 | 3.3 | 3.0 | 1.5 | 1.0 | Sanders +3.7 |
| EmersonEmerson | 1/31 - 2/2 | 853 LV | 28 | 21 | 15 | 14 | 11 | 5 | 4 | 1 | -- | Sanders +7 |
| FRA/David Binder (D)DBR (D) | 1/28 - 1/30 | 300 LV | 17 | 15 | 19 | 15 | 11 | 1 | 3 | 3 | 1 | Buttigieg +2 |
| DFP/CiviqsDFP/Civiqs | 1/26 - 1/29 | 615 LV | 28 | 15 | 15 | 21 | 8 | 5 | 2 | 2 | -- | Sanders +7 |
| MonmouthMonmouth | 1/23 - 1/27 | 544 LV | 21 | 23 | 16 | 15 | 10 | 3 | 4 | 1 | -- | Biden +2 |
| USA Today/SuffolkUSA Today | 1/23 - 1/26 | 500 LV | 19 | 25 | 18 | 13 | 6 | 3 | 2 | 1 | -- | Biden +6 |
| NY Times/SienaNYT/Siena | 1/20 - 1/23 | 584 LV | 25 | 17 | 18 | 15 | 8 | 3 | 3 | 1 | 1 | Sanders +7 |

23.0 Sanders +3.7 | 19.3 Biden | 16.8 Buttigieg | 15.5 Warren |
9.0 Klobuchar | 3.3 Yang | 3.0 Steyer | 1.5 Gabbard |
1.0 Bloomberg | -- Harris | -- O'Rourke | -- Booker |
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| Poll | Date | Sample | Sanders | Biden | Buttigieg | Warren | Klobuchar | Yang | Steyer | Gabbard | Bloomberg | Spread |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Final Results | -- | -- | 24.8 | 15.0 | 21.3 | 18.4 | 12.7 | 5.0 | 1.7 | 0.2 | 0.1 | Sanders +3.5 |
| RCP Average | 1/20 - 2/2 | -- | 23.0 | 19.3 | 16.8 | 15.5 | 9.0 | 3.3 | 3.0 | 1.5 | 1.0 | Sanders +3.7 |
| EmersonEmerson | 1/31 - 2/2 | 853 LV | 28 | 21 | 15 | 14 | 11 | 5 | 4 | 1 | -- | Sanders +7 |
| FRA/David Binder (D)DBR (D) | 1/28 - 1/30 | 300 LV | 17 | 15 | 19 | 15 | 11 | 1 | 3 | 3 | 1 | Buttigieg +2 |
| DFP/CiviqsDFP/Civiqs | 1/26 - 1/29 | 615 LV | 28 | 15 | 15 | 21 | 8 | 5 | 2 | 2 | -- | Sanders +7 |
| MonmouthMonmouth | 1/23 - 1/27 | 544 LV | 21 | 23 | 16 | 15 | 10 | 3 | 4 | 1 | -- | Biden +2 |
| Iowa St./CiviqsIowa St. | 1/23 - 1/27 | 655 LV | 24 | 15 | 17 | 19 | 11 | 5 | 4 | 2 | 1 | Sanders +5 |
| EmersonEmerson | 1/23 - 1/26 | 450 LV | 30 | 21 | 10 | 11 | 13 | 5 | 5 | 5 | -- | Sanders +9 |
| USA Today/SuffolkUSA Today | 1/23 - 1/26 | 500 LV | 19 | 25 | 18 | 13 | 6 | 3 | 2 | 1 | -- | Biden +6 |
| NY Times/SienaNYT/Siena | 1/20 - 1/23 | 584 LV | 25 | 17 | 18 | 15 | 8 | 3 | 3 | 1 | 1 | Sanders +7 |
| CBS News/YouGovCBS News | 1/16 - 1/23 | 1356 LV | 26 | 25 | 22 | 15 | 7 | 1 | 1 | 0 | -- | Sanders +1 |
| FRA/David Binder (D)DBR (D) | 1/15 - 1/18 | 500 LV | 14 | 24 | 16 | 18 | 11 | 3 | 4 | 1 | 1 | Biden +6 |
| MonmouthMonmouth | 1/9 - 1/12 | 405 LV | 18 | 24 | 17 | 15 | 8 | 3 | 4 | 2 | -- | Biden +6 |
| DM Register/CNNDMR/CNN | 1/2 - 1/8 | 701 LV | 20 | 15 | 16 | 17 | 6 | 5 | 2 | 2 | 1 | Sanders +3 |
| CBS News/YouGovCBS News | 12/27 - 1/3 | 953 LV | 23 | 23 | 23 | 16 | 7 | 2 | 2 | 1 | -- | Tie |
| Iowa St./CiviqsIowa St. | 12/12 - 12/16 | 632 LV | 21 | 15 | 24 | 18 | 4 | 3 | 2 | 3 | 0 | Buttigieg +3 |
| EmersonEmerson | 12/7 - 12/10 | 325 RV | 22 | 23 | 18 | 12 | 10 | 2 | 3 | 2 | 2 | Biden +1 |
| Iowa St./CiviqsIowa St. | 11/15 - 11/19 | 614 LV | 18 | 12 | 26 | 19 | 5 | 4 | 2 | 2 | 1 | Buttigieg +7 |
| DM Register/CNNDMR/CNN | 11/8 - 11/13 | 500 LV | 15 | 15 | 25 | 16 | 6 | 3 | 3 | 3 | 2 | Buttigieg +9 |
| CBS News/YouGovCBS News | 11/6 - 11/13 | 856 LV | 22 | 22 | 21 | 18 | 5 | 1 | 2 | 0 | -- | Tie |
| MonmouthMonmouth | 11/7 - 11/11 | 961 RV | 13 | 19 | 22 | 18 | 5 | 3 | 3 | 2 | 0 | Buttigieg +3 |
| Univ. of IowaUniv. of Iowa | 10/28 - 10/10 | 465 LV | 18 | 15 | 16 | 23 | 1 | 3 | 3 | 3 | -- | Warren +5 |
| QuinnipiacQuinnipiac | 10/30 - 11/5 | 698 RV | 17 | 15 | 19 | 20 | 5 | 3 | 3 | 3 | -- | Warren +1 |
| NY Times/SienaNYT/Siena | 10/25 - 10/30 | 439 LV | 19 | 17 | 18 | 22 | 4 | 3 | 2 | 2 | -- | Warren +3 |
| Iowa St./CiviqsIowa St. | 10/18 - 10/22 | 598 LV | 18 | 12 | 20 | 28 | 4 | 2 | 3 | 2 | -- | Warren +8 |
| USA Today/SuffolkUSA Today | 10/16 - 10/18 | 500 LV | 9 | 18 | 13 | 17 | 3 | 1 | 3 | 3 | -- | Biden +1 |
| EmersonEmerson | 10/13 - 10/16 | 888 RV | 13 | 23 | 16 | 23 | 1 | 5 | 2 | 2 | -- | Tie |
| CBS News/YouGovCBS News | 10/3 - 10/11 | 729 LV | 21 | 22 | 14 | 22 | 2 | 0 | 3 | 1 | -- | Tie |
| DM Register/CNNDMR/CNN | 9/14 - 9/18 | 602 LV | 11 | 20 | 9 | 22 | 3 | 2 | 2 | 2 | -- | Warren +2 |
| Iowa St./CiviqsIowa St. | 9/13 - 9/17 | 572 LV | 16 | 16 | 13 | 24 | 3 | 3 | 2 | 4 | -- | Warren +8 |
| FRA/David Binder (D)DBR (D) | 9/14 - 9/17 | 500 LV | 9 | 25 | 12 | 23 | 8 | 2 | 3 | 1 | -- | Biden +2 |
| CBS News/YouGovCBS News | 8/28 - 9/4 | LV | 26 | 29 | 7 | 17 | 2 | 1 | 2 | 1 | -- | Biden +3 |
| MonmouthMonmouth | 8/1 - 8/4 | 401 LV | 9 | 28 | 8 | 19 | 3 | 2 | 3 | 1 | -- | Biden +9 |
| CBS News/YouGovCBS News | 7/9 - 7/18 | 706 LV | 19 | 24 | 7 | 17 | 4 | 0 | 2 | 0 | -- | Biden +5 |
| FRA/David Binder (D)DBR (D) | 6/29 - 7/1 | 600 LV | 12 | 17 | 10 | 20 | 4 | 1 | -- | 1 | -- | Warren +2 |
| USA Today/SuffolkUSA Today | 6/28 - 7/1 | 500 LV | 9 | 24 | 6 | 13 | 2 | 1 | -- | 1 | -- | Biden +8 |
| DM Register/CNNDMR/CNN | 6/2 - 6/5 | 600 LV | 16 | 24 | 14 | 15 | 2 | 1 | -- | 1 | -- | Biden +8 |
| CBS News/YouGovCBS News | 5/31 - 6/12 | 587 LV | 22 | 30 | 11 | 12 | 4 | 0 | -- | 1 | -- | Biden +8 |
| GravisGravis | 4/17 - 4/18 | 590 RV | 19 | 19 | 14 | 6 | 4 | 1 | -- | 1 | -- | Tie |
| MonmouthMonmouth | 4/4 - 4/9 | 351 LV | 16 | 27 | 9 | 7 | 4 | 1 | -- | 0 | -- | Biden +11 |
| EmersonEmerson | 3/21 - 3/24 | 249 RV | 24 | 25 | 11 | 9 | 2 | 0 | -- | 1 | -- | Biden +1 |
| FRA/David Binder (D)DBR (D) | 3/21 - 3/24 | 500 LV | 17 | 25 | 6 | 8 | 6 | 1 | -- | 1 | -- | Biden +8 |
| DM Register/CNNDMR/CNN | 3/3 - 3/6 | 401 RV | 25 | 27 | 1 | 9 | 3 | 0 | -- | 0 | -- | Biden +2 |
| EmersonEmerson | 1/30 - 2/2 | 260 RV | 15 | 29 | -- | 11 | 3 | -- | -- | -- | -- | Biden +11 |
| DM Register/CNNDMR/CNN | 12/10 - 12/13 | 455 LV | 19 | 32 | -- | 8 | 3 | -- | -- | -- | 3 | Biden +13 |