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Toss-up · 2024 Senate
Washington Senate
In the 2024 Washington Senate race, Maria Cantwell (D) won by about 19 points.
Actual result
D+18.5
Final polls said
D+17.5
2 late polls · ✓
VotePredictor Elections predicted
—
Winner
Dem
"Final polls said" averages polls from the last ~3 weeks — the call right before the vote, and how pollsters are rated. VotePredictor Elections' prediction is walk-forward (trained only on earlier races).
Final rankings
How everyone who called this race did, ranked — VotePredictor Elections shown inline (★).
Pollsters — each pollster's final poll vs the result
| # | Pollster | Final call | Miss | Called |
|---|---|---|---|---|
| 1 | Research Co. | D+20.0 | 1.5 | ✓ |
| 2 | Public Policy Polling | D+15.0 | 3.5 | ✓ |
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 99% | 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 Elections | Dem 100% | 0.000 | ✓ |
The polls behind it
2 polls · newest firstPollsterDateSampleMiss
Research Co.2024-11-022
Public Policy Polling2024-10-164
Frequently asked questions
Who won the 2024 Washington Senate race?
Maria Cantwell (D) won, by about 18.5 points (D+18.5).
When was the 2024 Washington Senate election held?
It was held in November 2024.
Which party matches you?
These candidates split on taxes, health care, guns, and abortion. See where you land — and which members of Congress actually vote like you.