2026 Massachusetts Senate
Margin = Ed Markey − John Deaton. 13 polls from 6 pollsters. Consensus as of Oct 14, 2026: D+24.4(95% band D+19.9 to D+28.7).
Polls and consensus
Individual poll (click to open source)Consensus, house effects removed95% band
How each pollster compares in this race
Average distance of each pollster's polls from the consensus of all other polls at the same time. The overall house effect is that pollster's lean across every race we track.
| Pollster | Polls here | Avg. vs consensus here | Overall house effect |
|---|---|---|---|
| SurveyUSA | 1 | R+1.6 | R+1.1 |
| University of New Hampshire Survey Center | 5 | R+1.3 | R+0.2 |
| Cygnal | 1 | R+0.4 | R+0.8 |
| UMass Amherst/YouGov | 2 | D+0.6 | D+0.1 |
| Suffolk University | 3 | D+1.9 | D+1.1 |
| MassINC Polling Group | 1 | D+2.3 | D+0.5 |
All polls
| Field dates | Pollster | Sample | Result | House-effect adjusted | Source |
|---|---|---|---|---|---|
| Oct 14, 2026 – Oct 17, 2026 | Suffolk University | 500 LV | D+28.0 | D+26.9 | release via votehub,wikipedia |
| Oct 5, 2026 – Oct 12, 2026 | UMass Amherst/YouGov | 800 RV | D+27.0 | D+26.9 | release via votehub,wikipedia |
| Sep 14, 2026 – Sep 22, 2026 | MassINC Polling Group | 800 LV | D+26.0 | D+25.6 | release via votehub,wikipedia |
| Sep 17, 2026 – Sep 21, 2026 | University of New Hampshire Survey Center | 564 LV | D+23.0 | D+23.4 | release via votehub,wikipedia |
| Aug 20, 2026 – Aug 24, 2026 | University of New Hampshire Survey Center | 881 LV | D+19.0 | D+19.4 | release via votehub,wikipedia |
| Aug 5, 2026 – Aug 12, 2026 | UMass Amherst/YouGov | 800 RV | D+21.0 | D+20.9 | release via votehub,wikipedia |
| Jun 18, 2026 – Jun 23, 2026 | University of New Hampshire Survey Center | 623 LV | D+16.0 | D+16.4 | release via votehub,wikipedia |
| Jun 8, 2026 – Jun 12, 2026 | Suffolk University | 500 RV | D+25.0 | D+23.9 | release via votehub,wikipedia |
| Apr 16, 2026 – Apr 20, 2026 | University of New Hampshire Survey Center | 603 LV | D+23.0 | D+23.4 | release via votehub,wikipedia |
| Feb 12, 2026 – Feb 16, 2026 | University of New Hampshire Survey Center | 616 LV | D+29.0 | D+29.4 | release via votehub,wikipedia |
| Jan 22, 2026 – Jan 25, 2026 | Cygnal R | 800 LV | D+24.0 | D+25.7 | release via wikipedia |
| Nov 19, 2025 – Nov 23, 2025 | Suffolk University | 500 RV | D+23.0 | D+21.9 | release via votehub,wikipedia |
| Feb 28, 2025 – Mar 4, 2025 | SurveyUSA | 775 RV | D+19.0 | D+20.1 | release via votehub,wikipedia |