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

CNN

Method: live phone mix · scored polls from 2018 to 2024

Versus the field
+0.14
points of error vs. other pollsters in the same races, after shrinkage (unshrunk +0.54; 32% own record)
Average miss
4.8
points on the margin, as published
House effect
D+0.9
lean relative to other polls of the same races
Scored polls
70
51 races · 21 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
2018225.7+1.1D+3.9
2020177.0+1.9D+2.3
2022121.81.9D+1.2
2024193.7+0.4D+0.5
This cycle

2026 polls in the database

EndedRaceMatchupAs published
Sep 6, 2026Governor MEHannah Pingree v. Bobby CharlesD+13
Sep 6, 2026Governor MIJocelyn Benson v. John JamesD+9
Sep 6, 2026Senate METroy Jackson v. Susan CollinsD+3
Sep 6, 2026Senate MIAbdul El-Sayed v. Mike RogersD+3
Jul 27, 2026Generic ballotD+8
May 4, 2026Generic ballotD+3
Mar 30, 2026Generic ballotD+6
Jan 12, 2026Generic ballotD+5
Oct 30, 2025Generic ballotD+5
Sep 1, 2025Generic ballotD+4
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 28, 20242024 Senate, WID+2D+0.8D+1.2D+3.0
Oct 28, 20242024 President, WID+6R+0.9D+6.9D+2.8
Oct 28, 20242024 President, GAR+1R+2.2D+1.2D+1.6
Oct 28, 20242024 President, MID+5R+1.4D+6.4D+3.6
Oct 28, 20242024 President, NCD+1R+3.2D+4.2D+2.5
Oct 28, 20242024 President, PAEvenR+1.7D+1.7D+2.6
Oct 28, 20242024 Governor, NCD+16D+14.8D+1.2R+1.0
Oct 28, 20242024 Senate, PAD+3R+0.2D+3.2D+4.8
Oct 28, 20242024 Senate, MID+6D+0.3D+5.7D+4.1
Oct 26, 20242024 President, AZD+1R+5.5D+6.5D+4.6
Oct 26, 20242024 Senate, AZD+8D+2.4D+5.6D+4.9
Oct 26, 20242024 President, NVR+1R+3.1D+2.1D+3.7
Oct 26, 20242024 Senate, NVD+9D+1.6D+7.4D+5.8
Oct 23, 20242024 Generic ballotR+3R+2.7R+0.3D+3.6
Oct 23, 20242024 PresidentEvenR+1.5D+1.5D+3.7
Sep 25, 20242024 House, NE-2D+6R+1.9D+7.9D+4.7
Sep 25, 20242024 Governor, NCD+17D+14.8D+2.2R+1.0
Sep 25, 20242024 President, NCEvenR+3.2D+3.2D+2.5
Sep 22, 20242024 PresidentD+1R+1.5D+2.5D+3.7
Nov 29, 20222022 Senate, GAD+4D+2.8D+1.2D+0.3
Oct 31, 20222022 Generic ballotR+4R+2.6R+1.4D+2.9
Oct 18, 20222022 Governor, MID+6D+10.5R+4.5R+4.4
Oct 17, 20222022 Governor, WID+2D+3.4R+1.4R+3.3
Oct 17, 20222022 Governor, PAD+15D+14.8D+0.2R+4.1
Oct 17, 20222022 Senate, WIR+1R+1.0EvenR+2.0
Oct 17, 20222022 Senate, PAD+6D+4.9D+1.1R+2.8
Oct 5, 20222022 Generic ballotD+3R+2.6D+5.6D+2.9
Oct 2, 20222022 Senate, AZD+6D+4.9D+1.1R+1.0
Oct 2, 20222022 Senate, NVR+2D+0.8R+2.8R+0.5
Oct 2, 20222022 Governor, NVR+2R+1.5R+0.5D+0.7
Oct 2, 20222022 Governor, AZD+3D+0.7D+2.3R+1.8
Oct 30, 20202020 President, WID+8D+0.6D+7.4D+6.2
Oct 30, 20202020 Senate, NCD+3R+1.7D+4.7D+6.2
Oct 30, 20202020 Senate, MID+12D+1.7D+10.3D+5.3
Oct 30, 20202020 Senate, AZD+7D+2.3D+4.7D+4.1
Oct 30, 20202020 President, NCD+6R+1.3D+7.3D+2.7
Oct 30, 20202020 Governor, NCD+10D+4.5D+5.5D+5.7
Oct 30, 20202020 President, AZD+4D+0.3D+3.7D+2.3
Oct 30, 20202020 President, MID+12D+2.8D+9.2D+4.3
Oct 26, 20202020 Generic ballotD+12D+3.0D+9.0D+3.7
Oct 26, 20202020 PresidentD+12D+4.4D+7.6D+4.3
Oct 20, 20202020 President, FLD+4R+3.4D+7.4D+5.4
Oct 20, 20202020 President, PAD+10D+1.2D+8.8D+4.0
Oct 4, 20202020 PresidentD+16D+4.4D+11.6D+4.3
Sep 13, 20202020 President, NCD+3R+1.3D+4.3D+2.7
Sep 13, 20202020 Senate, NCD+1R+1.7D+2.7D+6.2
Sep 13, 20202020 Governor, NCD+9D+4.5D+4.5D+5.7
Sep 13, 20202020 President, WID+10D+0.6D+9.4D+6.2
Nov 3, 20182018 Generic ballotD+13D+8.5D+4.5R+1.1
Oct 29, 20182018 Governor, AZR+7R+14.2D+7.2D+1.7
Oct 29, 20182018 Governor, FLD+1R+0.4D+1.4D+3.7
Oct 29, 20182018 Senate, AZD+4D+2.3D+1.7R+1.4
Oct 29, 20182018 Senate, FLD+2R+0.1D+2.1D+1.3
Oct 29, 20182018 Senate, NVD+3D+5.0R+2.0R+5.6
Oct 29, 20182018 Senate, TNR+4R+10.8D+6.8D+6.6
Oct 29, 20182018 Governor, NVD+1D+4.1R+3.1R+4.2
Oct 29, 20182018 Governor, TNR+10R+21.0D+11.0D+5.7
Oct 20, 20182018 Governor, FLD+12R+0.4D+12.4D+3.7
Oct 20, 20182018 Senate, FLD+5R+0.1D+5.1D+1.3
Oct 13, 20182018 Senate, TXR+7R+2.6R+4.4R+2.8