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Massachusetts Senate
Actual result
D+19.8
Final polls said
D+21.8
3 late polls · ✓
Model predicted
D+24.6
✓
Winner
Dem
"Final polls said" averages polls from the last ~3 weeks — the call right before the vote, and how pollsters are rated. The model's prediction is walk-forward (trained only on earlier races).
Final rankings
How everyone who called this race did, ranked — VotePredictor shown inline (★).
Pollsters — each pollster's final poll vs the result
| # | Pollster | Final call | Miss | Called |
|---|---|---|---|---|
| 1 | Emerson College | D+20.4 | 0.6 | ✓ |
| 2 | MassINC Polling Group | D+22.0 | 2.2 | ✓ |
| 3 | University of New Hampshire | D+23.0 | 3.2 | ✓ |
| 4 | VotePredictor | D+24.6 | 4.8 | ✓ |
Forecasters — pre-election win probability, scored by Brier
| # | Forecaster | Win prob | Brier | Called |
|---|---|---|---|---|
| 1 | Cook Political | Dem 99% | 0.000 | ✓ |
| 2 | Inside Elections | Dem 99% | 0.000 | ✓ |
| 3 | Sabato's Crystal Ball | Dem 99% | 0.000 | ✓ |
| 4 | CNalysis | Dem 99% | 0.000 | ✓ |
| 5 | JHK Forecasts | Dem 100% | 0.000 | ✓ |
| 6 | Split Ticket | Dem 100% | 0.000 | ✓ |
| 7 | FiveThirtyEight | Dem 100% | 0.000 | ✓ |
| 8 | Race to the WH | Dem 100% | 0.000 | ✓ |
| 9 | DDHQ/Decision Desk | Dem 99% | 0.000 | ✓ |
| 10 | The Economist | Dem 100% | 0.000 | ✓ |
| 11 | VotePredictor | Dem 100% | 0.000 | ✓ |
Polls (3)
| Pollster | Date | n | Poll | Miss |
|---|---|---|---|---|
| University of New Hampshire | 2024-10-31 | 744 | D+23.0 | 3 |
| MassINC Polling Group | 2024-10-30 | 582 | D+22.0 | 2 |
| Emerson College | 2024-10-25 | 1000 | D+20.4 | 1 |