Wisconsin
David Crowley (D) vs. Tom Tiffany (R) · Incumbent: open (D)
Recorded before the vote · November 1, 2026
Result: pending
Election Day is Tuesday, Nov 3. The actual margin will be posted here beside every prediction, with how far each one missed and in which direction.
Polling averages
| Average | Margin | As of | Miss |
|---|---|---|---|
| PollCheck | D+4.1 | 2026-11-01 | Pending |
| RealClearPolitics | D+3.5 | 2026-10-17 | Pending |
| Silver Bulletin | D+3.6 | 2026-10-21 | Pending |
| Decision Desk HQ | D+3.6 | 2026-10-17 | Pending |
| FiftyPlusOne | D+3.7 | 2026-10-20 | Pending |
| 270toWin | D+4.0 | 2026-10-17 | Pending |
Latest polls
| Pollster | For | Fielded | Sample | Margin | Miss |
|---|---|---|---|---|---|
| Wick | League of American Workers | Oct 19-23 | 1,213 LV | D+3 | Pending |
| Marquette Law School | Marquette University | Oct 14-22 | 668 LV | D+7 | Pending |
| YouGov | City Forward Collective / CFC Action Fund | Sep 22-Oct 9 | 1,715 A | D+4 | Pending |
| Z to A Research | Rust Belt Rising | Sep 28-Oct 1 | 662 LV | D+5 | Pending |
| Marquette Law School | Marquette University | Sep 16-23 | 692 LV | D+3 | Pending |
| Marquette Law School | Marquette University | Aug 12-20 | 738 LV | D+5 | Pending |
Forecasts and odds
| Forecaster | Forecast | As of |
|---|---|---|
| Decision Desk HQ | D 72% to win (Lean D) | 2026-10-30 |
| PollCheck | Crowley (D) 68% to win; Lean D | 2026-11-01 |
| Silver Bulletin | Lean D | 2026-10-23 |
Race ratings
| Rater | Rating | As of |
|---|---|---|
| Cook Political Report | Toss-up | 2026-10-23 |
| Inside Elections | Toss-up | 2026-10-15 |
| Sabato's Crystal Ball | Lean D | 2026-10-22 |
| NBC News | Lean D | 2026-10-23 |
| Decision Desk HQ | Lean D | 2026-10-30 |