Maine · Senate
Election Day · Nov 3, 2026
Score updated Jul 14, 2026
Read more on Ballotpedia| Pollster | Grade | Date | R% | D% | Margin |
|---|---|---|---|---|---|
| Beacon Research/Shaw & Company Research | B | 2026-06-27 | 50 | 47 | D+3.0 |
| Siena College | B | 2026-06-26 |
| 47 |
| 49 |
| R+2.0 |
| Siena College Research Institute | B | 2026-06-26 | 47 | 49 | R+2.0 |
| Wick | B | 2026-06-14 | 45.4 | 47.6 | R+2.2 |
| Echelon Insights (Collins vs. Mills) | B | 2026-04-09 | 46 | — | — |
| Echelon Insights (Collins vs. Platner) | B | 2026-04-09 | 45 | 51 | R+6.0 |
| Maine People's Resource Center (Collins vs. Platner) | B | 2026-03-31 | 39 | 48 | R+9.0 |
| Maine People's Resource Center (Collins vs. Mills) | B | 2026-03-31 | 45 | — | — |
| Emerson (Collins vs. Platner) | B | 2026-03-23 | 41 | 48 | R+7.0 |
| Emerson College (Collins vs. Mills) | B | 2026-03-23 | 43 | — | — |
| OnMessage (Collins vs. Platner) | B | 2026-03-08 | 42 | 44 | R+2.0 |
| OnMessage (Collins vs. Mills) | B | 2026-03-08 | 42 | — | — |
| University of New Hampshire (includes Susan Collins and Graham Platner) | B | 2026-02-16 | 38 | 49 | R+11.0 |
| University of New Hampshire (includes Susan Collins and Janet Mills) | B | 2026-02-16 | 40 | — | — |