Maine · Senate
Election Day · Nov 3, 2026
Score updated Aug 29, 2026
Read more on Ballotpedia| Pollster | Grade | Date | D% | R% | Margin |
|---|---|---|---|---|---|
| Beacon Research/Shaw & Company Research | B | 2026-08-10 | 48 | 46 | D+2.0 |
| Hart Research | B | 2026-08-01 |
Timothy Rich
Unenrolled
| 49 |
| 45 |
| D+4.0 |
| University of New Hampshire | B | 2026-07-20 | 49 | 46 | D+3.0 |
| Z to A Research | B | 2026-07-08 | 47 | 48 | R+1.0 |
| Wedgewood Polls | B | 2026-07-06 | 48 | 43 | D+5.0 |
| Beacon Research/Shaw & Company Research | B | 2026-06-27 | — | 50 | — |
| Siena College Research Institute | B | 2026-06-26 | — | 47 | — |
| Siena College | B | 2026-06-26 | — | 47 | — |
| Wick | B | 2026-06-14 | — | 45.4 | — |
| Echelon Insights (Collins vs. Platner) | B | 2026-04-09 | — | 45 | — |
| Echelon Insights (Collins vs. Mills) | B | 2026-04-09 | — | 46 | — |
| Maine People's Resource Center (Collins vs. Platner) | B | 2026-03-31 | — | 39 | — |
| Maine People's Resource Center (Collins vs. Mills) | B | 2026-03-31 | — | 45 | — |
| Emerson (Collins vs. Platner) | B | 2026-03-23 | — | 41 | — |
| Emerson College (Collins vs. Mills) | B | 2026-03-23 | — | 43 | — |
| OnMessage (Collins vs. Mills) | B | 2026-03-08 | — | 42 | — |
| OnMessage (Collins vs. Platner) | B | 2026-03-08 | — | 42 | — |
| University of New Hampshire (includes Susan Collins and Janet Mills) | B | 2026-02-16 | — | 40 | — |
| University of New Hampshire (includes Susan Collins and Graham Platner) | B | 2026-02-16 | — | 38 | — |