Pollster ratings · Head to head

Siena vs. YouGov: which pollster is more accurate?

YouGov comes out ahead on 4 of 7 measures in the Crosstab Trust Index, which grades pollsters on how close their final polls came to actual results from 1998 to 2022.

 
Siena College
A-
Trust Score 67/100 · rank #17
★ Ahead
YouGov
B-
Trust Score 44/100 · rank #43

Head to head

MeasureSienaYouGov
Trust Score67/100 ★44/100
Average error
how far final polls missed the result
5.7 pts5 pts ★
Versus expected
error compared with what its races predicted
0.2 better ★0.1 better
Consistency
random miss once its tilt is removed
±5.1 pts±4.8 pts ★
Historical bias
closer to even is better
R+3.2D+1.3 ★
Winners called89% ★87%
Track record
final polls analyzed, 1998–2022
57 polls481 polls
2026 polls1342
2026 lean
versus other polls of the same races
D+2.7D+1.4 ★

2026 races both have polled

RaceSiena (latest)YouGov (latest)
Texas SenateTalarico 51, Paxton 45 (D+4.6 vs. avg)Talarico 47, Paxton 46 (R+2.1 vs. avg)
Iowa SenateTurek 47, Hinson 48 (R+2.6 vs. avg)Turek 44, Hinson 43 (D+0.3 vs. avg)

Compare them in the interactive Trust Index All pollster ratings

More comparisons: Emerson College vs. YouGov · University of New Hampshire Survey Center vs. YouGov · New York Times/Siena College vs. YouGov · Beacon Research/Shaw & Co. Research vs. YouGov · Rasmussen Reports vs. YouGov · Ipsos vs. YouGov · InsiderAdvantage vs. YouGov · Trafalgar Group vs. YouGov

Frequently asked questions

Which is more accurate, Siena or YouGov?

YouGov has the smaller average error (5 pts vs. 5.7 pts). Overall, youGov comes out ahead on 4 of 7 measures in the Crosstab Trust Index (Siena: A-, Trust Score 67; YouGov: B-, Trust Score 44).

Which leans more Republican in 2026, Siena or YouGov?

YouGov (D+1.4 versus other polls of the same races) compared with Siena (D+2.7). Lean describes how a pollster's numbers compare with others; it isn't a measure of accuracy.

Have Siena and YouGov polled the same 2026 races?

Yes: 2 races in Crosstab's data, including Texas Senate, Iowa Senate.

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.