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

FM3 Research

Method: live phone · scored polls from 1998 to 2022 · 97% of scored polls were for a party or campaign

Versus the field
+0.19
points of error vs. other pollsters in the same races, after shrinkage (unshrunk +2.02; 9% own record)
Average miss
6.9
points on the margin, as published
House effect
D+0.3
lean relative to other polls of the same races
Scored polls
29
23 races · 5 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
199844.2+0.7R+1.5
200022.75.2D+5.8
2002514.5+8.1D+5.7
200454.30.1R+1.7
200615.9+3.7D+3.1
201043.6+1.0D+2.0
2012210.4+5.8D+5.4
201412.16.4R+0.9
201816.5+0.1
2020310.8+6.2D+4.0
202211.42.6R+2.4
This cycle

2026 polls in the database

EndedRaceMatchupAs published
Jul 12, 2026OH-10Kristina Knickerbocker v. Mike TurnerR+7
Jul 1, 2026NY-17Cait Conley v. Mike LawlerD+6
Jun 25, 2026WI-3Rebecca Cooke v. Derrick Van OrdenD+4
May 31, 2026MO-2Fred Wellman v. Ann WagnerR+3
Feb 4, 2026Governor ORTina Kotek v. Christine DrazanD+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 26, 20222022 Governor, ORD-ALIGNEDD+2D+3.4R+1.4R+2.9
Oct 14, 20202020 Senate, ALD-ALIGNEDD+1R+20.4D+21.4D+8.5
Oct 4, 20202020 President, Nebraska CD-2D-ALIGNEDD+11D+6.5D+4.5R+2.4
Oct 4, 20202020 House, NE-2D-ALIGNEDD+2R+4.6D+6.6D+2.8
Sep 20, 20182018 House, WA-5D-ALIGNEDR+3R+9.5D+6.5
Oct 6, 20142014 House, UT-4D-ALIGNEDR+3R+5.1D+2.1R+0.9
Oct 14, 20122012 House, CA-21D-ALIGNEDR+4R+15.5D+11.5R+0.6
Sep 25, 20122012 House, WI-7D-ALIGNEDR+3R+12.3D+9.3D+2.8
Oct 9, 20102010 Senate, WIEvenR+4.8D+4.8R+1.2
Oct 5, 20102010 Governor, WID-ALIGNEDEvenR+5.8D+5.8R+2.0
Oct 5, 20102010 Senate, WID-ALIGNEDR+1R+4.8D+3.8R+1.2
Oct 4, 20102010 House, WA-8D-ALIGNEDR+4R+4.1D+0.1R+0.9
Sep 16, 20062006 House, WI-8D-ALIGNEDD+8D+2.1D+5.9R+1.1
Oct 20, 20042004 House, CO-3D-ALIGNEDD+17D+4.0D+13.0D+4.9
Oct 20, 20042004 President, COD-ALIGNEDEvenR+4.7D+4.7D+0.4
Oct 20, 20042004 Senate, COD-ALIGNEDD+5D+4.8D+0.2R+1.6
Sep 28, 20042004 Senate, WAD-ALIGNEDD+15D+12.2D+2.8D+3.3
Sep 9, 20042004 Senate, WAD-ALIGNEDD+13D+12.2D+0.8D+3.3
Oct 18, 20022002 Senate, TXD-ALIGNEDD+1R+12.0D+13.0D+4.0
Oct 18, 20022002 Governor, TXD-ALIGNEDR+3R+17.8D+14.8D+6.4
Oct 15, 20022002 Senate, TXD-ALIGNEDD+2R+12.0D+14.0D+4.0
Oct 9, 20022002 Governor, TXD-ALIGNEDR+3R+17.8D+14.8D+6.4
Sep 23, 20022002 Senate, TXD-ALIGNEDD+4R+12.0D+16.0D+4.0
Oct 23, 20002000 House, CA-20D-ALIGNEDD+11D+6.9D+4.1R+9.9
Sep 7, 20002000 President, CAD-ALIGNEDD+13D+11.8D+1.2R+4.2
Oct 21, 19981998 Senate, WID-ALIGNEDD+1D+2.1R+1.1R+0.1
Oct 12, 19981998 Senate, NVD-ALIGNEDD+5D+0.1D+4.9D+2.6
Sep 25, 19981998 Senate, WAD-ALIGNEDD+13D+16.8R+3.8R+7.9
Sep 22, 19981998 Senate, NVD-ALIGNEDD+7D+0.1D+6.9D+2.6