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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Matching polls
5Senate polls by Critical Insights.
Polls per month
3
Aug 2020Oct 2020
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 25–Oct 4, 2020 | 2020 United States Senate election in Maine (2020)Not averaged | — Critical Insights | — | 466 | LV | — | Gideon 46 · Collins 43 | D+3 | — | — | Release |
| Sep 25–Oct 4, 2020 | 2020 United States Senate election in Maine (2020) | — Critical Insights | — | 466 | LV | — | Gideon 44 · Collins 43 | D+1 | — | — | Release |
| Jul 28–Aug 9, 2020 | 2020 United States Senate election in Maine (2020)Not averaged | — Critical Insights | — | 499 | RV | — | Gideon 44 · Collins 37 | D+7 | — | — | Release |
| Jul 28–Aug 9, 2020 | 2020 United States Senate election in Maine (2020)Not averaged | — Critical Insights | — | 499 | RV | — | Gideon 43 · Collins 35 | D+8 | — | — | Release |
| Jul 28–Aug 9, 2020 | 2020 United States Senate election in Maine (2020) | — Critical Insights | — | 453 | LV | — | Gideon 43 · Collins 38 | D+5 | — | — | Release |
Showing 1–5 of 5
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)