Maine Senate race 2026
Our 21-day average puts Susan Collins at 46.6%, Graham Platner at 49.3%, Troy Jackson at 49.1%, Janet Mills at 37%, based on 73 polls ending between 3/25/2025 and 10/25/2026. Dots on the chart are individual polls; the line is the rolling average. How to read these numbers.
Maine Senate race 2026 over time
73 polls · 21-day rolling average · dots are individual polls
Susan Collins 46.6%
Graham Platner 49.3%
Troy Jackson 49.1%
Janet Mills 37%
View data as table
| Choice | Latest average | Polls | Latest poll |
|---|---|---|---|
| Susan Collins | 46.6% | 65 | 10/25/2026 |
| Graham Platner | 49.3% | 31 | 7/6/2026 |
| Troy Jackson | 49.1% | 25 | 10/25/2026 |
| Janet Mills | 37% | 20 | 7/7/2026 |
Average result
Unweighted mean across 73 matching polls
View data as table
| Choice | % |
|---|---|
| Susan Collins | 44.9% |
| Graham Platner | 49.8% |
| Troy Jackson | 48.7% |
| Janet Mills | 37.6% |
| Jordan Wood | 16% |
| David Costello | 2% |
| Andrea LaFlamme | 1% |
| David Evans | 0.5% |
Individual polls (73)
| End date | Pollster | Sample | Results |
|---|---|---|---|
| 3/5/2026 | Quantus Insights | 800 LV |
Susan Collins (R)
Graham Platner (D)
|
| 3/2/2026 | Pan Atlantic SMS Group | 810 LV |
Susan Collins (R)
Graham Platner (D)
|
| 3/2/2026 | Pan Atlantic SMS Group | 810 LV |
Susan Collins (R)
Janet Mills (D)
|
| 2/16/2026 | University of New Hampshire | 1,097 LV |
Susan Collins (R)
Janet Mills (D)
|
| 2/16/2026 | University of New Hampshire | 1,105 LV |
Susan Collins (R)
Graham Platner (D)
|
| 1/24/2026 |
Fabrizio, Lee & Associates
for Pine Tree Results |
800 LV |
Susan Collins (R)
Janet Mills (D)
|
| 1/24/2026 |
Fabrizio, Lee & Associates
for Pine Tree Results |
800 LV |
Susan Collins (R)
Graham Platner (D)
|
| 12/16/2025 | Workbench Strategy | 900 LV |
Susan Collins (R)
Janet Mills (D)
|
| 12/16/2025 | Workbench Strategy | 500 LV |
Graham Platner (D)
Janet Mills (D)
|
| 12/7/2025 | Pan Atlantic SMS Group | 820 LV |
Susan Collins (R)
Janet Mills (D)
|
| 12/7/2025 | Pan Atlantic SMS Group | 820 LV |
Susan Collins (R)
Graham Platner (D)
|
| 11/18/2025 |
Z to A Research
for Progressive Change Campaign Committee |
845 LV |
Graham Platner (D)
Janet Mills (D)
David Evans (D)
Andrea LaFlamme (D)
Tucker Favreau (D)
David Costello (D)
|
| 11/11/2025 |
Cyngal
for Plymouth Union Public Advocacy |
600 LV |
Susan Collins (R)
Dem
|
| 10/29/2025 | Maine People's Resource Center | 783 RV |
Susan Collins (R)
Graham Platner (D)
|
| 10/29/2025 | Maine People's Resource Center | 783 RV |
Susan Collins (R)
Janet Mills (D)
|
| 10/23/2025 | NRSC | 647 LV |
Graham Platner (D)
Janet Mills (D)
Jordan Wood (D)
|
| 10/21/2025 | University of New Hampshire | 408 LV |
Susan Collins (R)
Carmen Calabrese (R)
Dan Smeriglio (R)
|
| 10/21/2025 | University of New Hampshire | 506 LV |
Graham Platner (D)
Janet Mills (D)
Jordan Wood (D)
David Costello (D)
Tucker Favreau (D)
David Evans (D)
Andrea LaFlamme (D)
|
| 10/10/2025 |
Zenith Research
for More Perfect Union |
501 LV |
Susan Collins (R)
Janet Mills (D)
|
| 10/10/2025 |
Zenith Research
for More Perfect Union |
501 LV |
Susan Collins (R)
Graham Platner (D)
|
| 9/9/2025 | Public Policy Polling | 642 RV |
Dan Kleban (D)
Susan Collins (R)
|
| 7/7/2025 | NRSC | 579 LV |
Janet Mills (D)
Jordan Wood (D)
|
| 3/25/2025 | Upswing Research | 600 LV |
Susan Collins (R)
Jordan Wood (D)
|