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.
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6Polls by Basswood Research.
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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 3–5, 2020 | 2020 United States Senate special election in Arizona (2020) | C− Basswood Research | the American Action Network | 800 | LV | — | Kelly 47 · McSally 49 | R+2 | — | — | Release |
| Sep 26–28, 2020 | 2020 Iowa's 1st congressional district election (2020) | C− Basswood Research | the Congressional Leadership Fund | 400 | LV | — | Finkenauer 45 · Hinson 45 | Even | — | — | Release |
| Aug 29–31, 2020 | 2020 United States Senate special election in Arizona (2020) | C− Basswood Research | the American Action Network | 800 | LV | — | Kelly 48 · McSally 48 | Even | — | — | Release |
| Jul 13–15, 2020 | 2020 New Jersey's 3rd congressional district election (2020) | C− Basswood Research | the Congressional Leadership Fund | 400 | LV | — | Kim 45 · Richter 42 | D+3 | — | — | Release |
| Mar 10–11, 2020 | 2020 New Jersey's 7th congressional district election (2020) | C− Basswood Research | — | 400 | LV | — | Malinowski 38 · Jr. 39 | R+1 | — | — | Release |
| Jul 11–12, 2016 | 2016 United States Senate election in Illinois (2016) | C− Basswood Research | — | 800 | V | — | Duckworth 40 · Kirk 42 | R+2 | — | — | Release |
Showing 1–6 of 6
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)