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

Strategies 360

Method: live phone mix · scored polls from 2012 to 2022

Versus the field
−0.16
points of error vs. other pollsters in the same races, after shrinkage (unshrunk −1.22; 10% own record)
Average miss
4.3
points on the margin, as published
House effect
D+0.1
lean relative to other polls of the same races
Scored polls
18
18 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
201222.50.0R+2.1
201421.61.1D+3.1
201620.83.0D+1.8
201810.64.4D+1.4
2020106.50.2D+0.2
202212.56.1D+4.2
This cycle

2026 polls in the database

EndedRaceMatchupAs published
Aug 26, 2026NV-2Teresa Benitez-Thompson v. David FlippoR+3
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
Sep 26, 20222022 Senate, WAD+12D+14.5R+2.5R+6.7
Oct 20, 20202020 Governor, MTR+7R+12.9D+5.9D+8.0
Oct 20, 20202020 Senate, MTR+1R+10.0D+9.0D+7.6
Oct 20, 20202020 President, MTR+8R+16.4D+8.4D+9.0
Oct 20, 20202020 House, NM-2D-ALIGNEDD+1R+7.4D+8.4D+7.9
Oct 20, 20202020 House, MT-1EvenR+12.8D+12.8D+11.9
Oct 13, 20202020 House, CA-50D-ALIGNEDEvenR+7.9D+7.9D+1.9
Oct 1, 20202020 House, CA-22D-ALIGNEDR+5R+8.5D+3.5
Sep 29, 20202020 President, AZD+4D+0.3D+3.7D+2.3
Sep 14, 20202020 Governor, WAD+16D+13.4D+2.6D+1.3
Sep 14, 20202020 President, WAD+22D+19.2D+2.8D+2.1
Sep 13, 20182018 House, CA-22D-ALIGNEDR+6R+5.4R+0.6R+5.9
Oct 1, 20162016 Governor, WAD+10D+8.8D+1.2D+0.6
Oct 1, 20162016 President, WAD+16D+15.7D+0.3R+2.7
Oct 22, 20142014 Governor, COD+3D+3.3R+0.3R+2.4
Oct 22, 20142014 Senate, COD+1R+1.9D+2.9R+1.1
Oct 19, 20122012 Governor, WAEvenD+3.1R+3.1R+0.1
Oct 19, 20122012 President, WAD+13D+14.9R+1.9R+0.7