Suffolk comes out ahead on 6 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.
| Measure | Siena | Suffolk |
|---|---|---|
| Trust Score | 67/100 | 68/100 ★ |
| Average error how far final polls missed the result | 5.7 pts | 4.1 pts ★ |
| Versus expected error compared with what its races predicted | 0.2 better | 0.7 better ★ |
| Consistency random miss once its tilt is removed | ±5.1 pts | ±4 pts ★ |
| Historical bias closer to even is better | R+3.2 | D+1.5 ★ |
| Winners called | 89% ★ | 81% |
| Track record final polls analyzed, 1998–2022 | 57 polls | 60 polls |
| 2026 polls | 17 | 14 |
| 2026 lean versus other polls of the same races | D+2.6 | D+1.3 ★ |
| Race | Siena (latest) | Suffolk (latest) |
|---|---|---|
| Iowa Senate | Turek 47, Hinson 48 (R+3 vs. avg) | Turek 48, Hinson 44 (D+2.4 vs. avg) |
| Ohio Senate | Brown 49, Husted 46 (even vs. avg) | Brown 47, Husted 44 (R+0.4 vs. avg) |
Compare them in the interactive Trust Index All pollster ratings
More comparisons: Siena College vs. YouGov · Suffolk University vs. YouGov · Emerson College vs. Siena College · Emerson College vs. Suffolk University · Siena College vs. University of New Hampshire Survey Center · Suffolk University vs. University of New Hampshire Survey Center · New York Times/Siena College vs. Siena College · New York Times/Siena College vs. Suffolk University
Suffolk has the smaller average error (4.1 pts vs. 5.7 pts). Overall, suffolk comes out ahead on 6 of 7 measures in the Crosstab Trust Index (Siena: A-, Trust Score 67; Suffolk: A-, Trust Score 68).
Suffolk (D+1.3 versus other polls of the same races) compared with Siena (D+2.6). Lean describes how a pollster's numbers compare with others; it isn't a measure of accuracy.
Yes: 2 races in Crosstab's data, including Iowa Senate, Ohio 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 2026-11-11 · Crosstab, nonpartisan polling analysis.