House Effects
Monday, September 21, 202643 days until Election Day, November 3, 2026
Governors · 2026

Wisconsin Governor

David Crowley (D)v.Tom Tiffany (R)LEAN D

Open seat, currently Democratic.

Projected margin
D+3.7
Nine in ten outcomes: D+13 to R+6
Chance of winning
74%
David Crowley
Polls alone
D+3.7
6 polls from 5 pollsters; latest Aug 20. Weight in projection: 100%.
Fundamentals alone
D+2.2
Weight in projection: 0%.
Polls

The average over time

Each poll is first shifted by its sponsor's and its pollster's measured lean, then weighted by recency and track record. Sample size gets no weight: in 2,000-plus past races it predicted nothing about accuracy. Why.

R+5EvenD+5D+10Apr ’26MayJunJulAugSepOctNovD+3.7Election Day
adjusted weighted average shading: which side the average favors each poll, as published party-aligned pollster or sponsor
Before any poll

What the fundamentals say

A regression on past governor's races, fit without looking at this year. The national environment term uses the generic ballot after its historical correction (D+5.3).

What each term adds to the estimate
BaselineR+1.1
Partisan leanD+0.4
National environmentD+2.9
Incumbency0.0
Incumbent's last over/under-performance0.0
Fundamentals estimateD+2.2
Input: partisan lean
D+0.6
Presidential vote relative to the nation, 2024 (and 2020).
Handicappers, for comparison
Cook: Tossup · Sabato: Lean D · Inside Elections: Tossup
Not an input to the projection.
Table view

All 6 polls in the average

“Share” is how much of today’s average each poll supplies. It depends on recency, the pollster’s record, whether the poll screens for likely voters, and how many other polls the same firm has in the race. It does not depend on sample size.

DatesPollsterSampleCrowleyTiffanyAs publishedAdjustedShare of average
Aug 12–20Marquette University Law School738 LV4944D+5D+4.9
moved 0.1 toward R
22%
source
Aug 14–18TIPP InsightsREP.-ALIGNED
for League of American Workers
1,187 LV46.743.4D+3D+6.1
moved 2.8 toward D
24%
source
Aug 12–13Platform Communications
for Badger Battleground Poll
500 LV4844D+4D+4.0
21%
source
Jul 30 – Aug 3GBAODEM.-ALIGNED
for Protect Our Wisconsin
800 LV4744D+3R+0.3
moved 3.3 toward R
21%
source
Jul 20–24RMG Research
for Institute for Reforming Government | Napolitan News Service
800 RV4643D+3D+2.7
moved 0.3 toward R
11%
source
Mar 13–19TIPP InsightsREP.-ALIGNED
for League of American Workers
1,168 LV42.340.8D+2D+4.3
moved 2.8 toward D
1.9%
source

LV: likely voters. RV: registered voters. A: all adults. “Adjusted” is the published margin after removing the sponsor shift and the pollster’s measured house effect; the small print says how far that moved the poll. Dem.-aligned and Rep.-aligned mark polls paid for by a party, a campaign, or an allied group, or taken by a firm whose published work is mostly for one side. They are shifted by the average lean of such polls, then counted at full weight.

History

Recent results for this office

YearDemocratRepublicanResult
2022Tony EversTim MichelsD+3.4
2018Tony EversScott WalkerD+1.1
2014Mary BurkeScott WalkerR+5.7
2012 (recall)Thomas M. BarrettScott WalkerR+6.8