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

Change Research

Method: text/web mix · scored polls from 2017 to 2024

Versus the field
+0.13
points of error vs. other pollsters in the same races, after shrinkage (unshrunk +0.44; 45% own record)
Average miss
5.5
points on the margin, as published
House effect
R+0.2
lean relative to other polls of the same races
Scored polls
172
112 races · 36 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
201794.61.3D+0.1
2018605.7+1.3R+0.5
2020795.7+0.0D+0.4
202255.8+2.4R+0.9
2024194.40.5R+1.6
This cycle

2026 polls in the database

EndedRaceMatchupAs published
Sep 9, 2026Governor FLDavid Jolly v. Byron DonaldsD+3
Sep 9, 2026Senate FLAngie Nixon v. Ashley MoodyEven
Aug 6, 2026Senate NCRoy Cooper v. Michael WhatleyD+7
Aug 1, 2026Senate NCRoy Cooper v. Michael WhatleyD+9
Jul 30, 2026Senate IDTodd Achilles v. James RischR+22
Jul 30, 2026ID-1Kaylee Peterson v. Russ FulcherR+21
Jul 30, 2026Governor IDTerri Pickens v. Brad LittleR+21
Jul 17, 2026Generic ballotD+8
Jul 11, 2026Governor FLDavid Jolly v. Byron DonaldsD+1
Jun 17, 2026Generic ballotD+5
May 16, 2026Governor FLDavid Jolly v. Byron DonaldsD+4
May 10, 2026Generic ballotD+3
May 8, 2026Senate NCRoy Cooper v. Michael WhatleyD+7
Apr 7, 2026Generic ballotD+5
Mar 12, 2026Generic ballotD+6
Feb 18, 2026Generic ballotD+3
Feb 4, 2026Senate NCRoy Cooper v. Michael WhatleyD+10
Jan 19, 2026Generic ballotD+3
Jan 11, 2026Senate IAJosh Turek v. Ashley HinsonR+3
Jan 7, 2026Senate NCRoy Cooper v. Michael WhatleyD+5
Dec 10, 2025Generic ballotEven
Nov 10, 2025Generic ballotD+4
Oct 6, 2025Generic ballotD+4
Sep 10, 2025Generic ballotD+2
Sep 8, 2025Senate NCRoy Cooper v. Michael WhatleyD+7
Apr 1, 2025Senate NEDan Osborn v. Pete RickettsR+1
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 31, 20242024 President, NER+18R+20.5D+2.5D+5.0
Oct 22, 20242024 President, MND+3D+4.2R+1.6D+1.9
Oct 22, 20242024 Senate, MND+12D+15.7R+4.0R+2.9
Oct 21, 20242024 President, NER+14R+20.5D+6.5D+5.0
Oct 9, 20242024 PresidentEvenR+1.5D+1.5D+3.8
Oct 8, 20242024 President, NER+20R+20.5D+0.5D+5.0
Oct 3, 20242024 Senate, MSD-ALIGNEDR+13R+25.6D+12.6
Sep 23, 20242024 House, PA-7D-ALIGNEDD+4R+1.0D+5.0D+7.0
Sep 23, 20242024 House, NE-2D-ALIGNEDD+8R+1.9D+9.9D+5.1
Sep 23, 20242024 House, PA-17D-ALIGNEDD+4D+7.8R+3.8
Sep 20, 20242024 House, RI-1D+29D+31.0R+2.0
Sep 20, 20242024 House, RI-2D+13D+16.7R+3.7
Sep 20, 20242024 Senate, RID+16D+20.0R+4.0R+0.4
Sep 20, 20242024 President, RID+14D+13.8D+0.2D+4.9
Sep 19, 20242024 PresidentD-ALIGNEDD+1R+1.5D+2.5D+3.8
Sep 13, 20242024 President, MOR+9R+18.4D+9.4D+4.2
Sep 13, 20242024 Senate, MOR+5R+13.7D+8.7D+2.8
Sep 8, 20242024 President, MND+4D+4.2EvenD+1.9
Sep 8, 20242024 Senate, MND+11D+15.7R+4.7R+2.9
Nov 8, 20222022 Generic ballotR+1R+2.6D+1.6D+2.9
Oct 18, 20222022 Senate, IAD-ALIGNEDR+3R+12.2D+9.2D+3.7
Oct 14, 20222022 Governor, MND+5D+7.7R+2.7D+2.2
Sep 28, 20222022 Senate, IAD-ALIGNEDR+5R+12.2D+7.2D+3.7
Sep 8, 20222022 Senate, IAD-ALIGNEDR+4R+12.2D+8.2D+3.7
Nov 2, 20202020 President, Nebraska CD-2D+3D+6.5R+3.5R+1.6
Nov 2, 20202020 House, IN-5EvenR+4.1D+4.1
Nov 2, 20202020 House, ME-2D+9D+6.1D+2.9D+14.2
Nov 2, 20202020 House, MO-2EvenR+6.4D+6.4D+2.5
Nov 2, 20202020 House, NE-2D+1R+4.6D+5.6D+2.2
Nov 2, 20202020 House, NY-24D+2R+2.4D+4.4D+0.9
Nov 2, 20202020 President, MED+12D+9.1D+2.9D+4.2
Nov 2, 20202020 President, MTR+5R+16.4D+11.4D+8.7
Nov 2, 20202020 President, Maine CD-1D+21D+23.1R+2.1R+0.1
Nov 2, 20202020 President, Maine CD-2D+1R+7.4D+7.9D+9.8
Nov 2, 20202020 House, AR-2EvenR+10.7D+10.7D+8.0
Nov 2, 20202020 Senate, MED+6R+8.6D+14.6D+13.0
Nov 2, 20202020 Senate, MTR+4R+10.0D+6.0D+8.0
Nov 2, 20202020 Governor, MTR+4R+12.9D+8.9D+7.5
Nov 1, 20202020 President, NCD+2R+1.3D+3.3D+2.8
Nov 1, 20202020 President, PAD+4D+1.2D+2.8D+4.1
Nov 1, 20202020 PresidentD+10D+4.4D+5.6D+4.3
Nov 1, 20202020 President, WID+8D+0.6D+7.4D+6.2
Nov 1, 20202020 President, MID+7D+2.8D+4.2D+4.5
Nov 1, 20202020 Senate, AZD+4D+2.3D+1.7D+4.1
Nov 1, 20202020 President, IAEvenR+8.2D+8.2D+7.3
Nov 1, 20202020 President, FLD+3R+3.4D+6.4D+5.4
Nov 1, 20202020 House, OK-5EvenR+4.1D+4.1D+3.2
Nov 1, 20202020 House, OH-1R+2R+7.1D+5.1D+7.2
Nov 1, 20202020 Senate, IAD+1R+6.6D+7.6D+7.5
Nov 1, 20202020 Senate, MID+5D+1.7D+3.3D+5.5
Nov 1, 20202020 Senate, NCD+4R+1.7D+5.7D+6.1
Nov 1, 20202020 President, AZD+3D+0.3D+2.7D+2.3
Oct 24, 20202020 House, FL-15D-ALIGNEDR+2R+10.8D+8.8D+2.2
Oct 24, 20202020 PresidentD+8D+4.4D+3.6D+4.3
Oct 19, 20202020 Senate, AKD-ALIGNEDR+3R+12.7D+9.7D+8.6
Oct 19, 20202020 President, PAD+2D+1.2D+0.8D+4.1
Oct 19, 20202020 President, NCD+3R+1.3D+4.3D+2.8
Oct 19, 20202020 President, MID+7D+2.8D+4.2D+4.5
Oct 19, 20202020 President, WID+8D+0.6D+7.4D+6.2
Oct 19, 20202020 President, FLD+5R+3.4D+8.4D+5.4