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

Expedition Strategies

Method: live phone · scored polls from 2016 to 2022 · 100% of scored polls were for a party or campaign

Versus the field
−0.01
points of error vs. other pollsters in the same races, after shrinkage (unshrunk −1.41; 2% own record). A thin record: too few scored polls to say much.
Average miss
6.8
points on the margin, as published
House effect
None
lean relative to other polls of the same races
Scored polls
6
5 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
201638.9+1.5
201812.75.0R+2.2
202018.2+0.1D+1.0
202212.92.3D+3.1
This cycle

2026 polls in the database

EndedRaceMatchupAs published
Aug 1, 2026VA-5Tom Perriello v. John McGuireR+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
Jun 9, 20222022 House, MN-1D-ALIGNEDR+1R+3.9D+2.9R+4.1
Sep 14, 20202020 House, CO-3D-ALIGNEDD+2R+6.2D+8.2D+3.3
Sep 9, 20182018 House, IA-4D-ALIGNEDR+6R+3.3R+2.7R+4.4
Oct 11, 20162016 House, VA-10D-ALIGNEDD+4R+5.8D+9.8
Sep 20, 20162016 House, VA-10D-ALIGNEDR+10R+5.8R+4.2
Sep 11, 20162016 House, FL-26D-ALIGNEDD+1R+11.8D+12.8