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

Public Opinion Strategies

Method: live phone · scored polls from 1998 to 2024 · 84% of scored polls were for a party or campaign

Versus the field
+0.24
points of error vs. other pollsters in the same races, after shrinkage (unshrunk +0.56; 42% own record)
Average miss
6.3
points on the margin, as published
House effect
R+0.3
lean relative to other polls of the same races
Scored polls
217
171 races · 10 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
199835.4+0.2D+0.1
200055.7+0.6D+1.3
2002235.41.5Even
2004175.8+0.5R+1.2
20062110.6+3.7R+5.9
200710.12.3
2008276.2+1.8R+1.5
2009121.9+13.9R+9.7
2010355.61.6D+0.9
2012346.4+1.5R+1.3
2014154.90.7D+0.7
2016147.60.9R+1.9
201875.0+1.7R+0.9
202054.51.3D+1.6
202246.3+2.7D+5.9
202452.71.7D+2.2
This cycle

2026 polls in the database

EndedRaceMatchupAs published
Sep 14, 2026PA-1Bob Harvie v. Brian FitzpatrickR+9
Jul 29, 2026Governor NVAaron Ford v. Joe LombardoR+9
Jul 9, 2026Senate SDBrian Bengs v. Mike RoundsR+23
Jun 29, 2026Governor NVAaron Ford v. Joe LombardoR+9
Jun 24, 2026Governor ORTina Kotek v. Christine DrazanR+4
Jun 11, 2026Senate MTAlani Bankhead v. Kurt AlmeR+19
Apr 27, 2026Generic ballotD+3
Mar 2, 2025Generic ballotR+2
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 15, 20242024 House, MI-8R-ALIGNEDR+1D+6.6R+7.6
Oct 1, 20242024 Senate, MTR-ALIGNEDR+6R+7.1D+1.1D+1.8
Oct 1, 20242024 Governor, MTR-ALIGNEDR+19R+20.2D+1.2R+0.3
Sep 23, 20242024 House, WI-3R-ALIGNEDR+5R+2.7R+2.3D+0.3
Sep 9, 20242024 House, PA-1R-ALIGNEDR+14R+12.8R+1.2D+3.9
Oct 27, 20222022 Generic ballotR-ALIGNEDD+6R+2.6D+8.6D+2.8
Oct 11, 20222022 Generic ballotD+2R+2.6D+4.6D+2.8
Oct 6, 20222022 House, CT-5R-ALIGNEDD+2D+0.2D+1.8R+0.5
Sep 8, 20222022 House, PA-1R-ALIGNEDR+20R+9.7R+10.3
Oct 18, 20202020 House, NY-24R-ALIGNEDR+8R+2.4R+5.6D+2.9
Oct 14, 20202020 House, CA-39R-ALIGNEDR+1R+1.2D+0.2
Oct 8, 20202020 PresidentR-ALIGNEDD+14D+4.4D+9.6D+4.2
Oct 6, 20202020 House, IL-17R-ALIGNEDD+6D+4.1D+1.9D+5.7
Oct 5, 20202020 House, TX-23R-ALIGNEDD+1R+4.0D+5.0
Oct 17, 20182018 House, CA-45R-ALIGNEDR+4D+4.1R+8.1R+2.5
Oct 9, 20182018 Senate, WVR-ALIGNEDD+1D+3.3R+2.3D+3.5
Oct 8, 20182018 House, KY-6R-ALIGNEDR+2R+3.2D+1.2D+3.8
Oct 7, 20182018 House, FL-16R-ALIGNEDR+10R+9.1R+0.9D+1.1
Oct 4, 20182018 House, PA-1R-ALIGNEDR+8R+2.5R+5.5D+2.0
Sep 20, 20182018 House, CA-49R-ALIGNEDD+2D+12.8R+10.8R+1.8
Sep 18, 20182018 House, MI-8R-ALIGNEDR+2D+3.8R+5.8R+4.9
Nov 2, 20162016 House, IN-9R+2R+13.7D+11.7D+8.4
Nov 2, 20162016 Governor, INEvenR+6.0D+6.0D+10.8
Nov 2, 20162016 Senate, INR+5R+9.7D+4.7D+11.1
Nov 2, 20162016 President, INR+11R+19.2D+8.2D+9.5
Oct 17, 20162016 House, WI-8R-ALIGNEDR+11R+25.3D+14.3
Oct 16, 20162016 House, MI-8R+18R+16.9R+1.1D+7.0
Oct 11, 20162016 Senate, NVR+3D+2.4R+5.4R+3.5
Oct 11, 20162016 President, NVD+6D+2.4D+3.6R+1.8
Oct 5, 20162016 House, CA-49R-ALIGNEDR+9R+0.5R+8.5R+2.4
Oct 4, 20162016 President, INR+5R+19.2D+14.2D+9.5
Oct 4, 20162016 Governor, IND+2R+6.0D+8.0D+10.8
Oct 4, 20162016 Senate, IND+1R+9.7D+10.7D+11.1
Oct 2, 20162016 House, CA-7R-ALIGNEDR+5D+2.3R+7.3D+0.8
Sep 11, 20162016 House, MI-8R-ALIGNEDR+19R+16.9R+2.1D+7.0
Oct 26, 20142014 Senate, NCR-ALIGNEDEvenR+1.6D+1.6D+2.8
Oct 26, 20142014 Senate, KYR-ALIGNEDR+7R+15.5D+8.5D+9.8
Oct 24, 20142014 House, NY-18R-ALIGNEDEvenD+5.2R+5.2R+0.3
Oct 19, 20142014 Senate, SDR-ALIGNEDR+24R+20.9R+3.1D+8.3
Oct 14, 20142014 House, NY-19R-ALIGNEDR+26R+19.8R+6.2D+1.1
Oct 12, 20142014 House, NY-18R-ALIGNEDD+4D+5.2R+1.2R+0.3
Oct 6, 20142014 Senate, NCR-ALIGNEDD+2R+1.6D+3.6D+2.8
Oct 6, 20142014 Senate, MNR-ALIGNEDD+7D+10.2R+3.2D+0.3
Oct 6, 20142014 Governor, NMR-ALIGNEDR+19R+14.4R+4.6D+2.1
Sep 24, 20142014 House, NY-1R-ALIGNEDEvenR+4.9D+4.9D+8.1
Sep 22, 20142014 House, NY-24R-ALIGNEDD+3R+10.4D+13.4D+10.5
Sep 17, 20142014 House, IL-13R-ALIGNEDR+19R+17.3R+1.7D+2.3
Sep 17, 20142014 House, KY-6R-ALIGNEDR+19R+20.0D+1.0D+7.1
Sep 16, 20142014 House, GA-12R-ALIGNEDD+2R+9.5D+11.5D+6.9
Sep 10, 20142014 Governor, RIR-ALIGNEDEvenD+4.5R+4.5D+0.7
Oct 30, 20122012 President, MNR-ALIGNEDR+1D+7.7R+8.7R+0.5
Oct 30, 20122012 Senate, NMR-ALIGNEDEvenD+5.7R+5.7D+3.6
Oct 30, 20122012 President, NMR-ALIGNEDD+8D+10.1R+2.1R+1.2
Oct 24, 20122012 House, NY-21R-ALIGNEDD+2D+5.0R+3.0R+1.2
Oct 24, 20122012 House, NY-19R-ALIGNEDR+10R+0.8R+9.2R+6.1
Oct 24, 20122012 Senate, NER-ALIGNEDR+16R+15.5R+0.5D+4.8
Oct 24, 20122012 President, NER-ALIGNEDR+18R+21.8D+3.8D+5.4
Oct 22, 20122012 House, TN-4R-ALIGNEDR+13R+11.5R+1.5
Oct 21, 20122012 Senate, NMR-ALIGNEDR+1D+5.7R+6.7D+3.6
Oct 21, 20122012 President, NMR-ALIGNEDD+5D+10.1R+5.1R+1.2