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 |
|---|---|---|---|
| 7/7/2026 | Public Policy Polling | 785 RV |
Susan Collins (R)
Janet Mills (D)
|
| 7/6/2026 | Tavern Research | 1,074 LV |
Graham Platner (D)
Susan Collins (R)
|
| 6/27/2026 |
Beacon Research/Shaw & Co. Research
for Fox News |
1,003 RV |
Susan Collins (R)
Graham Platner (D)
|
| 6/26/2026 |
The New York Times/Siena University
for Portland Press Herald |
608 LV |
Graham Platner (D)
Susan Collins (R)
|
| 6/14/2026 |
Wick
for 2Way |
1,008 LV |
Graham Platner (D)
Susan Collins (R)
|
| 6/11/2026 | Quantus Insights | 870 LV |
Graham Platner (D)
Susan Collins (R)
|
| 6/8/2026 | Tavern Research | 1,642 LV |
Graham Platner (D)
Susan Collins (R)
|
| 6/8/2026 | The Public Sentiment Institute | 497 LV |
Graham Platner (D)
Susan Collins (R)
|
| 6/5/2026 | Tavern Research | 704 LV |
Graham Platner (D)
Janet Mills (D)
David Costello (D)
Andrea LaFlamme (D)
|
| 6/3/2026 |
Fabrizio, Lee & Associates
for Pine Tree Results |
800 LV |
Susan Collins (R)
Graham Platner (D)
|
| 6/3/2026 | Public Policy Polling | 670 RV |
Graham Platner (D)
Susan Collins (R)
|
| 5/26/2026 | University of Massachusetts Lowell Center for Public Opinion/YouGov | 650 LV |
Graham Platner (D)
Susan Collins (R)
|
| 5/25/2026 | University of New Hampshire Survey Center | 1,280 LV |
Graham Platner (D)
Susan Collins (R)
|
| 5/18/2026 | Pan Atlantic SMS Group | 827 LV |
Graham Platner (D)
Susan Collins (R)
|
| 5/16/2026 | University of Massachusetts Lowell Center for Public Opinion/YouGov | 650 LV |
Graham Platner (D)
Susan Collins (R)
|
| 4/9/2026 |
Echelon Insights
for NetChoice |
378 LV |
Susan Collins (R)
Graham Platner (D)
|
| 4/9/2026 |
Echelon Insights
for NetChoice |
378 LV |
Susan Collins (R)
Janet Mills (D)
|
| 4/9/2026 | Workbench Strategy | 600 LV |
Graham Platner (D)
Janet Mills (D)
|
| 3/31/2026 | Maine People's Resource Center | 1,167 LV |
Susan Collins (R)
Graham Platner (D)
|
| 3/31/2026 | Maine People's Resource Center | 1,167 LV |
Susan Collins (R)
Janet Mills (D)
|
| 3/23/2026 | Emerson College | 1,075 LV |
Susan Collins (R)
Graham Platner (D)
|
| 3/23/2026 | Emerson College | 1,075 LV |
Susan Collins (R)
Janet Mills (D)
|
| 3/23/2026 | Impact Research | 500 LV |
Graham Platner (D)
Janet Mills (D)
|
| 3/8/2026 |
OnMessage Inc.
for Insurance Watchdog Coalition |
600 LV |
Graham Platner (D)
Susan Collins (R)
|
| 3/5/2026 | Quantus Insights | 800 LV |
Susan Collins (R)
Janet Mills (D)
|