House Effects
Monday, September 21, 202643 days until Election Day, November 3, 2026
Pollster record · how records are scored

Marquette University Law School

Method: probability panel · scored polls from 2012 to 2024

Versus the field
+0.04
points of error vs. other pollsters in the same races, after shrinkage (unshrunk −0.58; 16% own record)
Average miss
3.5
points on the margin, as published
House effect
D+0.1
lean relative to other polls of the same races
Scored polls
45
17 races · 20 polls this cycle
By cycle

Record over time

Error relative to other pollsters in the same races (negative is better), and lean relative to them. Cycles with fewer than 10 scored polls are grayed: a handful of polls says little.

CyclePollsAvg. missVersus the fieldLean vs. field
2012103.20.6D+2.2
201442.62.8R+2.4
201666.11.7R+1.2
201861.41.9R+1.9
202044.42.1R+1.4
202273.00.3D+1.3
202484.0+1.0D+1.0
This cycle

2026 polls in the database

EndedRaceMatchupAs published
Sep 9, 2026Generic ballotD+13
Aug 20, 2026Governor WIDavid Crowley v. Tom TiffanyD+5
Jul 29, 2026Generic ballotD+6
Jun 15, 2026Generic ballotD+8
May 26, 2026Generic ballotD+1
Apr 16, 2026Generic ballotD+10
Jan 28, 2026Generic ballotD+7
Nov 12, 2025Generic ballotD+5
The receipts

Most recent scored polls

Polls in the final two months of a race with a certified result. “Others” is the average miss of other pollsters in the same race.

Poll dateRacePollResultMissOthers' miss
Oct 24, 20242024 Senate, WID+2D+0.8D+1.2D+2.9
Oct 24, 20242024 President, WID+2R+0.9D+2.4D+2.9
Oct 10, 20242024 PresidentD+2R+1.5D+3.0D+3.7
Oct 10, 20242024 Generic ballotD+2R+2.7D+4.7D+3.4
Sep 26, 20242024 Senate, WID+7D+0.8D+5.7D+2.9
Sep 26, 20242024 President, WID+5R+0.9D+5.4D+2.9
Sep 5, 20242024 Senate, WID+6D+0.8D+4.7D+2.9
Sep 5, 20242024 President, WID+5R+0.9D+5.4D+2.9
Nov 1, 20222022 Governor, WIEvenD+3.4R+3.4R+3.2
Nov 1, 20222022 Senate, WIR+2R+1.0R+1.0R+1.9
Oct 9, 20222022 Governor, WID+1D+3.4R+2.4R+3.2
Oct 9, 20222022 Senate, WIR+6R+1.0R+5.0R+1.9
Sep 14, 20222022 Generic ballotD+6R+2.6D+8.6D+2.8
Sep 11, 20222022 Senate, WIR+1R+1.0EvenR+1.9
Sep 11, 20222022 Governor, WID+3D+3.4R+0.4R+3.2
Oct 25, 20202020 President, WID+5D+0.6D+4.4D+6.3
Oct 4, 20202020 President, WID+5D+0.6D+4.4D+6.3
Sep 15, 20202020 PresidentD+10D+4.4D+5.6D+4.3
Sep 3, 20202020 President, WID+4D+0.6D+3.4D+6.3
Oct 28, 20182018 Senate, WID+11D+10.8D+0.2Even
Oct 28, 20182018 Governor, WIEvenD+1.1R+1.1D+3.9
Oct 7, 20182018 Governor, WIR+1D+1.1R+2.1D+3.9
Oct 7, 20182018 Senate, WID+10D+10.8R+0.8Even
Sep 16, 20182018 Senate, WID+11D+10.8D+0.2Even
Sep 16, 20182018 Governor, WID+5D+1.1D+3.9D+3.9
Oct 28, 20162016 Senate, WID+1R+3.4D+4.4D+8.4
Oct 28, 20162016 President, WID+6R+0.8D+6.8D+6.1
Oct 8, 20162016 Senate, WID+2R+3.4D+5.4D+8.4
Oct 8, 20162016 President, WID+7R+0.8D+7.8D+6.1
Sep 17, 20162016 President, WID+3R+0.8D+3.8D+6.1
Sep 17, 20162016 Senate, WID+5R+3.4D+8.4D+8.4
Oct 25, 20142014 Governor, WIR+7R+5.7R+1.3D+4.4
Oct 11, 20142014 Governor, WIEvenR+5.7D+5.7D+4.4
Sep 27, 20142014 Governor, WIR+5R+5.7D+0.7D+4.4
Sep 13, 20142014 Governor, WIR+3R+5.7D+2.7D+4.4
Oct 27, 20122012 President, WID+8D+6.8D+1.2R+2.0
Oct 27, 20122012 Senate, WID+4D+5.5R+1.5R+3.6
Oct 13, 20122012 President, WID+1D+6.8R+5.8R+2.0
Oct 13, 20122012 Senate, WIR+1D+5.5R+6.5R+3.6
Sep 29, 20122012 President, WID+11D+6.8D+4.2R+2.0
Sep 29, 20122012 Senate, WID+4D+5.5R+1.5R+3.6
Sep 15, 20122012 President, WID+14D+6.8D+7.2R+2.0
Sep 15, 20122012 Senate, WID+9D+5.5D+3.5R+3.6
May 25, 20122012 Governor, WIR+7R+6.8R+0.2D+0.7
May 11, 20122012 Governor, WIR+6R+6.8D+0.8D+0.7