Pollster ratings · Crosstab Trust Index

Gallup C+

Trust Score 36/100, rank #53 of 72 (medium confidence; grade held in 57% of 400 resamples, plausible rank #25–59). Transparency member.

Average error
4.1
points, vs. 3.8 expected for its races
Versus other pollsters, same races
0.5 worse
points
Historical bias
R+1.3
which way its misses leaned
Winners called
63%
70 polls, 1998–2018

How Gallup compares

Trust Score percentile26th (median 49)
Accuracy versus expected21th percentile
Random miss (consistency)±3.9 pts
MethodLive Phone
Transparency score10/10 · AAPOR/Roper member

Average error by election cycle

CyclePollsAvg errorBias
199835.3D+4.6
2000115R+3.6
200293.2R+0.6
200312.1D+2.1
2004223.8even
200683.4R+1
200883.1R+1.4
201036.3R+6.3
201246.2R+6.2
201812.5D+2.5

Open Gallup in the interactive Trust Index All pollster ratings

Frequently asked questions

Is Gallup accurate?

Gallup is rated C+ in the Crosstab Trust Index (Trust Score 36 of 100, rank 53 of 72, medium confidence). Its final polls missed the actual margin by 4.1 points on average, against 3.8 expected for the races it polled, and it called the winner in 63% of races.

Does Gallup lean Republican or Democratic?

Historically, Gallup's misses leaned R+1.3 on average. Lean describes how its numbers compare; it isn't an accusation of bias.

Grades: Crosstab Trust Index, computed from FiveThirtyEight's pollster-ratings data (CC BY 4.0), 1998–2022; 2026 measures from Crosstab's polling data.

Updated 2026-10-04 · Crosstab, nonpartisan polling analysis.