SurveyUSA 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.
| Measure | Siena | SurveyUSA |
|---|---|---|
| Trust Score | 67/100 | 82/100 ★ |
| Average error how far final polls missed the result | 5.7 pts | 4.2 pts ★ |
| Versus expected error compared with what its races predicted | 0.2 better | 0.9 better ★ |
| Consistency random miss once its tilt is removed | ±5.1 pts | ±4.2 pts ★ |
| Historical bias closer to even is better | R+3.2 | Even ★ |
| Winners called | 89% ★ | 87% |
| Track record final polls analyzed, 1998–2022 | 57 polls | 698 polls |
| 2026 polls | 13 | 4 |
| 2026 lean versus other polls of the same races | D+2.7 | — |
Compare them in the interactive Trust Index All pollster ratings
More comparisons: Siena College vs. YouGov · SurveyUSA vs. YouGov · Emerson College vs. Siena College · Emerson College vs. SurveyUSA · Siena College vs. University of New Hampshire Survey Center · SurveyUSA vs. University of New Hampshire Survey Center · New York Times/Siena College vs. Siena College · New York Times/Siena College vs. SurveyUSA
SurveyUSA has the smaller average error (4.2 pts vs. 5.7 pts). Overall, surveyUSA comes out ahead on 5 of 6 measures in the Crosstab Trust Index (Siena: A-, Trust Score 67; SurveyUSA: A, Trust Score 82).
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.