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

DCCC Targeting and Analytics Department

Method: live phone mix · scored polls from 2012 to 2024 · 100% of scored polls were for a party or campaign

Versus the field
+0.05
points of error vs. other pollsters in the same races, after shrinkage (unshrunk +0.58; 15% own record)
Average miss
6.3
points on the margin, as published
House effect
D+0.3
lean relative to other polls of the same races
Scored polls
40
40 races · 3 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
201283.13.3D+1.5
201438.1+2.8D+2.0
201696.4+1.6D+2.8
201856.9+0.8R+0.4
2020710.3+3.3D+2.0
202234.54.3D+1.6
202455.0+2.4R+0.9
This cycle

2026 polls in the database

EndedRaceMatchupAs published
Sep 17, 2026VA-1Shannon Taylor v. Robert WittmanR+1
Jul 30, 2026AL-2Shomari Figures v. Rhett MarquesEven
Jul 30, 2026KY-6Zach Dembo v. Ralph AlvaradoEven
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 20, 20242024 House, VA-2D-ALIGNEDEvenR+3.8D+3.8D+0.8
Oct 18, 20242024 House, MI-10D-ALIGNEDEvenR+6.1D+6.1D+2.3
Oct 9, 20242024 House, NJ-7D-ALIGNEDR+2R+5.4D+3.4D+1.5
Oct 2, 20242024 House, WI-1D-ALIGNEDR+3R+10.2D+7.2D+4.1
Oct 1, 20242024 House, IA-1D-ALIGNEDD+4R+0.2D+4.2
Oct 31, 20222022 House, PA-12D-ALIGNEDD+14D+12.4D+1.6
Oct 24, 20222022 House, RI-2D-ALIGNEDEvenD+3.7R+3.7R+10.9
Aug 8, 20222022 House, NY-19D-ALIGNEDR+3D+5.3R+8.3R+12.2
Oct 22, 20202020 House, TX-3D-ALIGNEDD+2R+12.2D+14.2D+7.3
Oct 20, 20202020 House, WA-3D-ALIGNEDR+2R+13.0D+11.0D+7.1
Oct 20, 20202020 House, CO-3D-ALIGNEDD+1R+6.2D+7.2D+4.3
Oct 9, 20202020 House, MI-3D-ALIGNEDD+5R+5.9D+10.9D+3.5
Oct 6, 20202020 House, NC-8D-ALIGNEDD+3R+6.6D+9.6D+0.7
Oct 4, 20202020 House, FL-15D-ALIGNEDR+3R+10.8D+7.8D+2.5
May 10, 20202020 House, CA-25D-ALIGNEDD+2R+9.7D+11.7
Oct 10, 20182018 House, MI-6D-ALIGNEDR+3R+4.6D+1.6D+2.1
Oct 10, 20182018 House, PA-16D-ALIGNEDR+3R+4.3D+1.3D+2.0
Sep 27, 20182018 House, IL-12D-ALIGNEDR+2R+6.2D+4.7D+1.4
Sep 16, 20182018 House, WV-3D-ALIGNEDD+4R+12.7D+16.7D+9.5
Sep 13, 20182018 House, NC-13D-ALIGNEDD+4R+6.0D+10.0D+1.7
Oct 20, 20162016 House, UT-4D-ALIGNEDR+8R+12.4D+4.5R+2.7
Oct 17, 20162016 House, AK-1D-ALIGNEDR+2R+14.3D+12.3R+0.7
Oct 10, 20162016 House, FL-7D-ALIGNEDD+2D+3.0R+1.0R+8.7
Oct 10, 20162016 House, NJ-5D-ALIGNEDD+6D+4.4D+1.6R+1.3
Oct 3, 20162016 House, MI-8D-ALIGNEDR+6R+16.9D+10.9D+0.3
Sep 27, 20162016 House, NV-3D-ALIGNEDD+3D+1.3D+1.7R+0.3
Sep 24, 20162016 House, CA-49D-ALIGNEDR+2R+0.5R+1.5R+2.0
Sep 13, 20162016 House, NY-19D-ALIGNEDD+5R+3.2D+8.2D+2.8
Sep 12, 20162016 House, MN-3D-ALIGNEDD+2R+13.7D+15.7D+4.7
Sep 30, 20142014 House, FL-26D-ALIGNEDD+5R+2.9D+7.9D+0.9
Sep 27, 20142014 House, NJ-3D-ALIGNEDD+1R+9.6D+10.6D+4.0
Sep 13, 20142014 House, MA-6D-ALIGNEDD+8D+13.8R+5.8R+9.8
Oct 14, 20122012 House, NE-2D-ALIGNEDR+4R+1.6R+2.4R+9.6
Oct 14, 20122012 House, IL-10D-ALIGNEDD+1D+1.3R+0.3R+5.9
Oct 12, 20122012 House, IL-13D-ALIGNEDD+6R+0.3D+6.3R+0.1
Oct 10, 20122012 House, FL-22D-ALIGNEDD+10D+9.3D+0.7R+6.7
Oct 4, 20122012 House, IL-8D-ALIGNEDD+10D+9.5D+0.5R+0.5
Sep 13, 20122012 House, CO-6D-ALIGNEDR+3R+2.0R+1.0
Sep 10, 20122012 House, RI-1D-ALIGNEDD+6D+12.1R+6.1R+8.0
Sep 10, 20122012 House, CA-10D-ALIGNEDD+2R+5.4D+7.4R+0.5