Pollster ratings · Head to head

Research & Polling Inc. vs. Siena: which pollster is more accurate?

Research & Polling Inc. comes out ahead on 5 of 6 measures in the Crosstab Trust Index, which grades pollsters on how close their final polls came to actual results from 1998 to 2022.

★ Ahead
Research & Polling Inc.
A
Trust Score 75/100 · rank #9
 
Siena College
A-
Trust Score 67/100 · rank #17

Head to head

MeasureResearch & Polling Inc.Siena
Trust Score75/100 ★67/100
Average error
how far final polls missed the result
4.2 pts ★5.7 pts
Versus expected
error compared with what its races predicted
1.7 better ★0.2 better
Consistency
random miss once its tilt is removed
±4.1 pts ★±5.1 pts
Historical bias
closer to even is better
R+1 ★R+3.2
Winners called88%89% ★
Track record
final polls analyzed, 1998–2022
43 polls57 polls
2026 polls—13
2026 lean
versus other polls of the same races
—D+2.7

Compare them in the interactive Trust Index All pollster ratings

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Frequently asked questions

Which is more accurate, Research & Polling Inc. or Siena?

Research & Polling Inc. has the smaller average error (4.2 pts vs. 5.7 pts). Overall, research & Polling Inc. comes out ahead on 5 of 6 measures in the Crosstab Trust Index (Research & Polling Inc.: A, Trust Score 75; Siena: A-, Trust Score 67).

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.