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

InsiderAdvantage

Method: live phone mix · scored polls from 2004 to 2025

Versus the field
−0.12
points of error vs. other pollsters in the same races, after shrinkage (unshrunk −0.21; 45% own record)
Average miss
4.0
points on the margin, as published
House effect
R+1.1
lean relative to other polls of the same races
Scored polls
203
78 races · 18 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
200493.90.3D+0.5
2006104.7+0.2Even
200717.4+3.6R+8.8
2008435.10.1D+0.3
2009113.7+7.5D+8.3
201095.6+2.1R+1.0
201237.1+4.8R+4.9
201485.6+0.6D+0.4
2016153.30.1D+0.9
201722.34.0D+1.1
201821.50.8D+1.9
2020203.01.4R+2.6
202110.13.1R+3.7
2022404.7+0.7R+2.6
2024381.81.6R+2.3
202515.20.9D+1.3
This cycle

2026 polls in the database

EndedRaceMatchupAs published
Sep 17, 2026Senate MIAbdul El-Sayed v. Mike RogersD+2
Sep 17, 2026Senate NCRoy Cooper v. Michael WhatleyD+6
Sep 17, 2026Senate NHChris Pappas v. John SununuD+8
Sep 9, 2026Senate OHSherrod Brown v. Jon HustedD+5
Sep 9, 2026Senate SCAnnie Andrews v. Darline GrahamR+2
Sep 9, 2026Senate TXJames Talarico v. Ken PaxtonD+2
Aug 17, 2026Governor GAKeisha Lance Bottoms v. Rick JacksonEven
Aug 17, 2026Senate GAJon Ossoff v. Mike CollinsD+8
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 3, 20252025-GOV-VA D+10D+15.4R+5.2R+6.4
Nov 3, 20242024 President, IAR+7R+13.2D+6.4D+9.0
Nov 3, 20242024 President, GAR+1R+2.2D+1.2D+1.6
Nov 2, 20242024 President, WIR+1R+0.9R+0.4D+3.0
Nov 2, 20242024 President, NCR+2R+3.2D+1.0D+2.6
Nov 2, 20242024 Senate, AZD+2D+2.4R+0.3D+5.0
Nov 2, 20242024 President, MIEvenR+1.4D+1.5D+3.7
Nov 2, 20242024 President, PAR+1R+1.7D+0.7D+2.6
Nov 2, 20242024 Senate, MID+1D+0.3D+0.3D+4.3
Nov 2, 20242024 Senate, PAD+1R+0.2D+1.3D+4.8
Nov 2, 20242024 President, AZR+3R+5.5D+2.6D+4.7
Nov 2, 20242024 Senate, WIR+1D+0.8R+1.3D+3.1
Oct 27, 20242024 President, MIR+1R+1.4D+0.8D+3.7
Oct 27, 20242024 Senate, PAEvenR+0.2D+0.2D+4.8
Oct 27, 20242024 Senate, MID+1D+0.3D+0.3D+4.3
Oct 27, 20242024 Senate, WIR+1D+0.8R+1.8D+3.1
Oct 27, 20242024 President, WIR+1R+0.9R+0.1D+3.0
Oct 27, 20242024 President, PAR+1R+1.7D+0.7D+2.6
Oct 20, 20242024 President, NCR+2R+3.2D+1.3D+2.6
Oct 20, 20242024 President, NVEvenR+3.1D+2.9D+3.7
Oct 20, 20242024 President, AZR+3R+5.5D+3.0D+4.7
Oct 20, 20242024 Senate, AZD+4D+2.4D+1.8D+5.0
Oct 20, 20242024 Senate, NVD+4D+1.6D+2.7D+6.0
Oct 15, 20242024 President, GAR+2R+2.2D+0.2D+1.6
Oct 9, 20242024 President, MIR+2R+1.4R+0.6D+3.7
Oct 9, 20242024 Senate, WID+1D+0.8D+0.2D+3.1
Oct 9, 20242024 President, WIEvenR+0.9D+0.9D+3.0
Oct 9, 20242024 Senate, MID+1D+0.3D+0.7D+4.3
Oct 8, 20242024 President, PAR+2R+1.7R+0.3D+2.6
Sep 30, 20242024 President, AZR+1R+5.5D+4.1D+4.7
Sep 30, 20242024 President, GAEvenR+2.2D+2.4D+1.6
Sep 30, 20242024 Senate, NVD+8D+1.6D+6.2D+6.0
Sep 30, 20242024 President, NCEvenR+3.2D+3.0D+2.6
Sep 30, 20242024 Senate, AZD+7D+2.4D+4.1D+5.0
Sep 30, 20242024 President, NVR+1R+3.1D+2.2D+3.7
Sep 15, 20242024 Senate, PAD+5R+0.2D+4.8D+4.8
Sep 15, 20242024 President, PAR+1R+1.7D+0.3D+2.6
Sep 12, 20242024 President, MIR+1R+1.4D+0.8D+3.7
Sep 12, 20242024 President, WID+2R+0.9D+3.3D+3.0
Dec 4, 20222022 Senate, GAD+2D+2.8R+0.7D+0.4
Nov 6, 20222022 Governor, GAR+5R+7.5D+2.5D+0.4
Nov 6, 20222022 Senate, GAR+2D+1.0R+3.0D+0.2
Nov 5, 20222022 Governor, NHR+15R+15.5D+0.2D+0.1
Nov 5, 20222022 Senate, NHD+2D+9.1R+7.3R+3.2
Nov 4, 20222022 Senate, NVR+6D+0.8R+6.8R+0.4
Nov 4, 20222022 Governor, NVR+5R+1.5R+3.7D+0.9
Nov 3, 20222022 Senate, PAR+2D+4.9R+7.2R+2.5
Nov 3, 20222022 Governor, PAD+8D+14.8R+7.1R+3.8
Nov 2, 20222022 Governor, AZR+3D+0.7R+3.7R+1.5
Nov 2, 20222022 Senate, AZEvenD+4.9R+4.9R+0.9
Nov 1, 20222022 Senate, FLR+6R+16.4D+10.4D+9.8
Nov 1, 20222022 Governor, FLR+10R+19.4D+9.4D+10.1
Oct 31, 20222022 Senate, WAD+2D+14.5R+12.9R+5.8
Oct 30, 20222022 Governor, MIEvenD+10.5R+10.7R+3.8
Oct 27, 20222022 Senate, GAR+2D+1.0R+3.2D+0.2
Oct 27, 20222022 Governor, GAR+8R+7.5R+0.9D+0.4
Oct 26, 20222022 Governor, PAD+8D+14.8R+6.4R+3.8
Oct 26, 20222022 Senate, PAR+3D+4.9R+7.6R+2.5
Oct 25, 20222022 Generic ballotR+5R+2.6R+2.1D+3.0
Oct 25, 20222022 Senate, AZD+2D+4.9R+2.9R+0.9