Polls database
Every poll we use, with its source
11,685 polls since 2015: national questions, Senate, House, governor and state legislative races, presidential primaries and ballot measures. Filter, then open any poll’s release.
Pollster: HarrisX/Harris Poll Remove ×
Matching polls
18Primaries polls by HarrisX/Harris Poll.
Polls per month
2
Jan 2026Oct 2026
Latest poll in the database ended Nov 2, 2026. Source: 99chambers polls database
| Dates | Question | Pollster | Sponsor | Sample | Pop. | Mode | Result | Margin | Adjusted | vs result | Source |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 24–26, 2026 | 2028 Democratic primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Harris 34 · Newsom 20 | +14 | — | — | Release |
| Oct 24–26, 2026 | 2028 Republican primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Vance 40 · Jr. 21 | +19 | — | — | Release |
| Sep 26–28, 2026 | 2028 Democratic primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Harris 38 · Newsom 17 | +21 | — | — | Release |
| Sep 26–28, 2026 | 2028 Republican primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Vance 39 · Jr. 24 | +15 | — | — | Release |
| Aug 28–30, 2026 | 2028 Democratic primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | — | Harris 42 · Newsom 18 | +24 | — | — | Release |
| Aug 28–30, 2026 | 2028 Republican primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | — | Vance 44 · Rubio 21 | +23 | — | — | Release |
| Jul 11–12, 2026 | 2028 Democratic primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | — | Harris 37 · Newsom 24 | +13 | — | — | Release |
| Jul 11–12, 2026 | 2028 Republican primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | — | Vance 42 · Rubio 22 | +20 | — | — | Release |
| May 29–31, 2026 | 2028 Democratic primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Harris 44 · Newsom 26 | +18 | — | — | Release |
| May 29–31, 2026 | 2028 Republican primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Vance 45 · Jr. 21 | +24 | — | — | Release |
| Apr 23–26, 2026 | 2028 Democratic primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Harris 50 · Newsom 22 | +28 | — | — | Release |
| Apr 23–26, 2026 | 2028 Republican primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Vance 48 · Jr. 18 | +30 | — | — | Release |
| Mar 25–26, 2026 | 2028 Democratic primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Harris 41 · Newsom 26 | +15 | — | — | Release |
| Mar 25–26, 2026 | 2028 Republican primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Vance 42 · Jr. 20 | +22 | — | — | Release |
| Feb 25–26, 2026 | 2028 Democratic primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | — | Harris 39 · Newsom 24 | +15 | — | — | Release |
| Feb 25–26, 2026 | 2028 Republican primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | — | Vance 43 · Jr. 27 | +16 | — | — | Release |
| Jan 28–29, 2026 | 2028 Democratic primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Harris 39 · Newsom 30 | +9 | — | — | Release |
| Jan 28–29, 2026 | 2028 Republican primary | D HarrisX/Harris Poll | Harvard CAPS | — | RV | Nonprobability Panel | Vance 53 · Jr. 21 | +32 | — | — | Release |
Showing 1–18 of 18
Adjusted: after house-effect and population corrections. vs result: margin minus the certified or unofficial result. Latest poll in the database ended Nov 2, 2026. Source: each poll’s own release, as cited by the poll list it was compiled from (The New York Times for Senate, governor and House races; Wikipedia for other offices)