All 2026 races in Maine (Governor, Senate and House) →
General Election
| Candidate | Party | Votes | % | |
|---|---|---|---|---|
| Troy Jackson ✓ | Democratic | 376,070 | 53.0% | |
| Susan Collins | Republican | 332,803 | 46.9% | |
| Write-in | Nonpartisan | 882 | 0.1% |
As of 11:01 PM ET, Thu Nov 12.
Primary
Democratic Primary
Held June 9, 2026.
| Candidate | Votes | % | |
|---|---|---|---|
| Graham Platner ✓ — Withdrew | 154,084 | 72.1% | |
| Janet Mills | 41,644 | 19.2% | |
| David Costello | 17,560 | 8.1% | |
| Andrea LaFlamme | 1,114 | 0.5% |
Republican Primary
Held June 9, 2026.
| Candidate | Votes | % | |
|---|---|---|---|
| Susan Collins ✓ | 126,398 | 100.0% |
Full calendar and every race: Maine primary guide
Race Overview
General Election Polling Trend
Showing the published average. The rating above uses this figure.
The right edge is that same average of the last three polls. This is an average, not a forecast.
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Candidates
Graham Platner Won Primary — Withdrew
DemocratGraham Platner won the June 9 Democratic primary with 72.1% but withdrew from the race in July 2026. Maine Democrats nominated Troy Jackson at the July 25, 2026 state convention in Bangor.
Troy Jackson Nominee
DemocratChosen as the Democrat nominee at the July 25, 2026 state convention in Bangor after Graham Platner withdrew; faces Sen. Susan Collins in November.
Susan Collins Nominee Incumbent
RepublicanCertified write-ins: Sigrid Ann Olson, Ashley Webb, Joseph Steinberger, Brent Andrews, Michael Turcotte, Gina Oswald, Andrea LaFlamme.
General Election Polling Average
Average uses final-round head-to-heads only. Newer first-choice polls shown for reference.
LV = likely voters · RV = registered voters · ± = margin of error · R-sponsored / D-sponsored / I-sponsored = paid for by a Republican, Democratic, or Independent group · "missed 2024 by X pts" = that firm's average miss in 2024
Average is the unweighted mean of the last three scientific public polls. Fewer than three uses the polls that exist. The rating uses that average when the newest poll ended in the last 30 days. The table lists the polls in that average, plus the most recent 30 days or the newest 3 polls, whichever is more — subscribe for the full history. How accurate is each pollster? →
| Pollster | Date | Sample | MoE | Dem | Rep |
|---|---|---|---|---|---|
| Survey 160 In average (final round) | 2026-11-01 this poll | 1322 LV | Troy Jackson 50.00% | Susan Collins 46.00% | |
| Poll Vault/Emerson In average (final round) | 2026-11-01 this poll | 600 LV | ±4.00 | Troy Jackson 49.00% | Susan Collins 51.00% |
| New York Times/Siena University missed 2024 by 3.1 pts In average (final round) | 2026-11-01 this poll | 714 LV | ±3.40 | Troy Jackson 51.00% | Susan Collins 45.00% |
| University of New Hampshire Not in average | 2026-10-31 this poll | 1654 LV | ±2.40 | Troy Jackson 54.00% | Susan Collins 45.00% |
| YouGov Not in average | 2026-10-29 this poll | 1503 LV | ±4.00 | Troy Jackson 52.00% | Susan Collins 47.00% |
| Data for Progress (D) D-sponsored missed 2024 by 4.1 pts Not in average | 2026-10-27 this poll | 652 LV | ±4.00 | Troy Jackson 50.00% | Susan Collins 45.00% |
| CNN/SSRS Not in average | 2026-10-26 this poll | 783 LV | ±4.50 | Troy Jackson 49.00% | Susan Collins 45.00% |
| Marist missed 2024 by 4.3 pts Not in average | 2026-10-25 this poll | LV | ±6.60 | Troy Jackson 49.00% | Susan Collins 47.00% |
| Echelon Insights R-sponsored missed 2024 by 1.9 pts Not in average | 2026-10-23 this poll | 3544 LV | ±3.20 | Troy Jackson 51.00% | Susan Collins 44.00% |
| Trafalgar Group (R) R-sponsored missed 2024 by 1.8 pts Not in average | 2026-10-23 this poll | 1077 LV | ±2.90 | Troy Jackson 47.00% | Susan Collins 47.00% |
| Beacon Research (D)/Shaw & Co. Research (R) missed 2024 by 2.3 pts Not in average | 2026-10-20 this poll | 1514 LV | ±2.50 | Troy Jackson 49.00% | Susan Collins 49.00% |
Questions About This Race
Who won the 2026 Maine Senate race?
Troy Jackson (D) won the 2026 Maine Senate race — the seat was called on November 12, 2026.
What does the latest poll of the 2026 Maine Senate race say?
The most recent poll in our average, from Survey 160 (completed November 1, 2026), found Troy Jackson (D) at 50% and Susan Collins (R) at 46%.
When is the 2026 Maine Senate race decided?
Election Day is Tuesday, November 3, 2026.
How is the PollingSource average calculated?
The PollingSource average is the unweighted mean of the last three scientific public polls, or fewer when fewer exist. One poll sets the rating when it ended in the last 30 days. We do not exclude pollsters. The table lists recent polls, including ones older than those three. Full details: pollingsource.com/methodology.
Race Notes
Graham Platner won the June 9 Democratic primary with 72.1% but withdrew from the race in July 2026. Maine Democrats nominated Troy Jackson at the July 25, 2026 state convention in Bangor.
Independent Expenditures Updated 12 hours ago
Top Spenders
- WINSENATE Dem-aligned $37,597,195
- PINE TREE RESULTS PAC GOP-aligned $32,887,797
- SLF PAC GOP-aligned $26,640,901
- THE MAINE STANDARD GOP-aligned $9,523,182
- CFFE PAC Dem-aligned $4,419,654
- GOVERNMENT THAT WORKS PAC Dem-aligned $3,156,447
- STRONGER MAINE GOP-aligned $2,032,443
- LEAD MAINE COMMITTEE, INC. GOP-aligned $1,302,419
- PLANNED PARENTHOOD VOTES Dem-aligned $1,215,228
- LCV VICTORY FUND Dem-aligned $769,110
Full outside-spending research — every committee, every race →
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