Race
Jackson +2.8Maine · Senate
Don't know 4.2% · Troy Jackson 49.3% · Susan Collins 46.5%
- Field dates
- Sep 25–Sep 29, 2026
- Sample
- 684 LV
- Sponsor / client
- Not reported in archive
- Partisan sponsorship
- No partisan sponsorship flag
Pollster file
Maine People's Resource Center
Historical accuracy is measured against certified results. Current-cycle records come from the canonical, deduplicated archive and do not by themselves change the sealed forecast.
- Historical polls
- 12
- Mean absolute error
- 5.91percentage points
- Historical bias
- D+0.21
- Represented cycles
- 32012–2016
- Current archive
- 5canonical records
- History span
- Nov 2, 2012through Oct 25, 2016
Identity
Known names and relationships
- Known aliases
- No additional reviewed aliases
- Organization type
- Single canonical organization
- Cycles represented
- 2012 · 2014 · 2016
12 eligible historical polls across 3 represented cycles passed the published history identity checks. Historical bias is descriptive and is kept separate from sponsor or client affiliation.
Canonical 2025–2026 archive
Current-cycle records
Archive source date 2026-10-24. Archive records may be newer than the sealed forecast; inclusion here does not mean the forecast uses them.
5 shown · 5 total
Race
Platner +9Maine · Senate
Don't know 12.4% · Graham Platner 48.3% · Susan Collins 39.3%
- Field dates
- Mar 20–Mar 31, 2026
- Sample
- 1,167 LV
- Sponsor / client
- Not reported in archive
- Partisan sponsorship
- No partisan sponsorship flag
Race
Collins +3.1Maine · Senate
Don't know 13.1% · Susan Collins 45% · Janet Mills 41.9%
- Field dates
- Mar 20–Mar 31, 2026
- Sample
- 1,167 LV
- Sponsor / client
- Not reported in archive
- Partisan sponsorship
- No partisan sponsorship flag
Race
Platner +3.9Maine · Senate
Don't know 14.3% · Graham Platner 44.8% · Susan Collins 40.9%
- Field dates
- Oct 26–Oct 29, 2025
- Sample
- 783 RV
- Sponsor / client
- Not reported in archive
- Partisan sponsorship
- No partisan sponsorship flag
Race
Collins +4.1Maine · Senate
Don't know 12.5% · Janet Mills 41.7% · Susan Collins 45.8%
- Field dates
- Oct 26–Oct 29, 2025
- Sample
- 783 RV
- Sponsor / client
- Not reported in archive
- Partisan sponsorship
- No partisan sponsorship flag
Certified-result history
Eligible historical observations
12 shown · 12 total
| Cycle | Race | Type | Field end | Sample | Poll | Result | Error |
|---|---|---|---|---|---|---|---|
| 2016 | ME · President | Pres-G | 2016-10-25 | 812 | D+6.0 | D+3.0 | D+3.0 |
| 2016 | M2 · President | Pres-G | 2016-10-25 | 382 | R+1.7 | R+10.3 | D+8.6 |
| 2016 | M1 · President | Pres-G | 2016-10-25 | 429 | D+12.8 | D+14.8 | R+2.1 |
| 2014 | ME · Senate | Sen-G | 2014-11-01 | 906 | R+20.1 | R+37.0 | D+16.9 |
| 2014 | ME-2 · House | House-G | 2014-11-01 | 397 | R+0.9 | R+5.2 | D+4.3 |
| 2014 | ME-1 · House | House-G | 2014-11-01 | 419 | D+25.3 | D+29.8 | R+4.5 |
| 2014 | ME · Governor | Gov-G | 2014-11-01 | 906 | D+0.3 | R+4.8 | D+5.1 |
| 2012 | ME · President | Pres-G | 2012-11-02 | 905 | D+11.1 | D+15.3 | R+4.2 |
| 2012 | M2 · President | Pres-G | 2012-11-02 | 436 | D+4.0 | D+8.6 | R+4.6 |
| 2012 | M1 · President | Pres-G | 2012-11-02 | 469 | D+17.7 | D+21.4 | R+3.7 |
| 2012 | ME-2 · House | House-G | 2012-11-02 | 436 | D+4.0 | D+16.4 | R+12.4 |
| 2012 | ME-1 · House | House-G | 2012-11-02 | 469 | D+28.0 | D+29.6 | R+1.6 |
Method · historical final-three-week D/R general-election rows plus verified historical supplement; min n=5
Definition · bias_D is poll D-R margin minus actual D-R margin; positive overstates Democrats.
A missing sample, sponsor or source is labeled unavailable; it is never reconstructed.
Poll data via VoteHub, used under CC BY 4.0. Poll data from The New York Times, used under CC BY 4.0.