House Effects
Sunday, October 11, 202623 days until Election Day, November 3, 2026
Pollster record · how records are scored

Pew Research Center

Method: probability panel · scored polls from 1998 to 2024

Versus the field
+0.15
points of error vs. other pollsters in the same races, after shrinkage (unshrunk +0.08; 13% own record)
Average miss
4.3
points on the margin, as published
House effect
D+0.2
lean relative to other polls of the same races
Scored polls
53
19 races · 11 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
199835.6+1.7D+0.8
200093.7+0.6D+1.3
200257.7+2.2D+2.5
200473.8+1.2R+2.8
200664.5−0.9D+1.3
200864.1+0.3D+3.5
201022.0−1.0R+3.3
201244.2+1.8R+0.5
201424.6−0.5D+0.5
201634.6+0.2D+1.0
201821.0−2.3D+2.0
202024.3−0.3D+0.2
202213.6+0.1D+0.7
202412.5−1.4R+1.3
This cycle

2026 polls in the database

EndedRaceMatchupAs published
Oct 4, 2026Generic ballotD+8
Jul 12, 2026Generic ballotD+6
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 6, 20242024 PresidentD+1R+1.5D+2.5D+3.7
Oct 16, 20222022 Generic ballotD+1R+2.6D+3.6D+2.9
Oct 5, 20202020 PresidentD+10D+4.4D+5.6D+4.3
Oct 5, 20202020 Generic ballotD+6D+3.0D+3.0D+4.0
Oct 7, 20182018 Generic ballotD+9D+8.5D+0.5R+1.0
Sep 24, 20182018 Generic ballotD+10D+8.5D+1.5R+1.0
Oct 22, 20162016 PresidentD+6D+2.2D+3.8D+3.1
Oct 3, 20162016 PresidentD+7D+2.2D+4.8D+3.1
Oct 3, 20162016 HouseD+4R+1.0D+5.0D+4.5
Oct 17, 20142014 HouseD+1R+5.6D+6.6D+4.1
Sep 6, 20142014 HouseR+3R+5.6D+2.6D+4.1
Nov 2, 20122012 PresidentD+3D+3.9R+0.9R+1.7
Oct 26, 20122012 PresidentEvenD+3.9R+3.9R+1.7
Oct 6, 20122012 PresidentR+4D+3.9R+7.9R+1.7
Sep 14, 20122012 PresidentD+8D+3.9D+4.1R+1.7
Oct 29, 20102010 HouseR+6R+6.5D+0.5D+1.8
Oct 15, 20102010 HouseR+10R+6.5R+3.5D+1.8
Oct 31, 20082008 PresidentD+6D+7.4R+1.4R+2.9
Oct 25, 20082008 PresidentD+15D+7.4D+7.6R+2.9
Oct 18, 20082008 PresidentD+14D+7.4D+6.6R+2.9
Oct 11, 20082008 PresidentD+7D+7.4R+0.4R+2.9
Sep 28, 20082008 PresidentD+6D+7.4R+1.4R+2.9
Sep 11, 20082008 PresidentEvenD+7.4R+7.4R+2.9
Nov 3, 20062006 HouseD+4D+7.9R+3.9D+4.3
Oct 19, 20062006 HouseD+11D+7.9D+3.1D+4.3
Sep 27, 20062006 HouseD+13D+7.9D+5.1D+4.3
Sep 15, 20062006 Senate, PAD+21D+17.4D+3.6R+5.9
Sep 15, 20062006 Governor, PAD+29D+20.7D+8.3R+0.1
Sep 8, 20062006 HouseD+11D+7.9D+3.1D+4.3
Oct 29, 20042004 PresidentR+3R+2.4R+0.6D+0.1
Oct 17, 20042004 PresidentEvenR+2.4D+2.4D+0.1
Oct 2, 20042004 PresidentR+5R+2.4R+2.6D+0.1
Sep 24, 20042004 PresidentR+8R+2.4R+5.6D+0.1
Sep 19, 20042004 PresidentR+3R+2.4R+0.6D+0.1
Sep 13, 20042004 PresidentR+1R+2.4D+1.4D+0.1
Sep 9, 20042004 PresidentR+16R+2.4R+13.6D+0.1
Nov 1, 20022002 HouseD+2R+4.7D+6.7D+5.3
Nov 1, 20022002 HouseD+4R+4.7D+8.7D+5.3
Oct 19, 20022002 HouseD+5R+4.7D+9.7D+5.3
Oct 4, 20022002 HouseD+2R+4.7D+6.7D+5.3
Sep 7, 20022002 HouseD+2R+4.7D+6.7D+5.3
Nov 4, 20002000 HouseD+6R+0.3D+6.3D+1.8
Nov 4, 20002000 PresidentR+2D+0.5R+2.5R+1.5
Nov 3, 20002000 PresidentR+3D+0.5R+3.5R+1.5
Nov 3, 20002000 HouseD+4R+0.3D+4.3D+1.8
Oct 27, 20002000 PresidentR+4D+0.5R+4.5R+1.5
Oct 20, 20002000 PresidentEvenD+0.5R+0.5R+1.5
Oct 6, 20002000 HouseD+4R+0.3D+4.3D+1.8
Oct 6, 20002000 PresidentR+1D+0.5R+1.5R+1.5
Sep 15, 20002000 PresidentD+6D+0.5D+5.5R+1.5
Oct 30, 19981998 HouseD+2R+0.9D+2.9D+2.0
Oct 30, 19981998 HouseD+9R+0.9D+9.9D+2.0
Oct 16, 19981998 HouseR+5R+0.9R+4.1D+2.0