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

Victory Research

Method: live phone · scored polls from 2000 to 2022

Versus the field
+0.12
points of error vs. other pollsters in the same races, after shrinkage (unshrunk +1.56; 7% own record). A thin record: too few scored polls to say much.
Average miss
6.2
points on the margin, as published
House effect
R+0.1
lean relative to other polls of the same races
Scored polls
18
15 races · 1 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
2000111.0+4.5R+5.3
200434.9+1.7R+0.5
2006113.4+9.1R+8.8
201633.31.0R+1.7
201820.32.2R+1.9
202066.3+1.6D+3.8
2022212.0+6.5R+7.4
This cycle

2026 polls in the database

EndedRaceMatchupAs published
Nov 24, 2025Governor ILJB Pritzker v. Darren BaileyD+20
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
Nov 7, 20222022 Governor, ILD+8D+12.5R+4.9D+2.5
Oct 4, 20222022 House, IL-10R-ALIGNEDD+7D+26.0R+19.0
Nov 1, 20202020 House, IL-17D+11D+4.1D+6.5D+5.3
Nov 1, 20202020 Senate, ILD+25D+16.1D+8.9D+5.9
Nov 1, 20202020 President, ILD+16D+17.0R+1.1R+1.2
Nov 1, 20202020 House, IL-6D+14D+7.4D+6.8
Nov 1, 20202020 House, IL-3D+23D+12.8D+10.5R+6.7
Sep 26, 20202020 President, ILD+13D+17.0R+3.9R+1.2
Nov 3, 20182018 Governor, ILD+16D+15.7D+0.3D+2.1
Oct 2, 20182018 Governor, ILD+16D+15.7D+0.2D+2.1
Oct 17, 20162016 President, ILD+15D+17.1R+2.0D+0.1
Oct 17, 20162016 Senate, ILD+11D+15.1R+4.4R+4.9
Sep 23, 20162016 President, ILD+14D+17.1R+3.6D+0.1
Nov 4, 20062006 Senate, PAD+4D+17.4R+13.4R+4.5
Oct 30, 20042004 House, IL-8R+8D+3.4R+11.4R+9.3
Oct 30, 20042004 Senate, ILD+46D+42.9D+3.1D+3.2
Oct 30, 20042004 President, ILD+10D+10.3R+0.3R+1.1
Oct 8, 20002000 President, ILD+1D+12.0R+11.0R+5.7