Trust Score 66/100, rank #20 of 72 (low confidence; grade held in 41% of 400 resamples, plausible rank #5–57). Often Democratic-sponsored.
| Trust Score percentile | 72th (median 49) |
| Accuracy versus expected | 74th percentile |
| Random miss (consistency) | ±3.2 pts |
| Method | Live Phone |
| Transparency score | 6/10 |
| Cycle | Polls | Avg error | Bias |
|---|---|---|---|
| 2006 | 3 | 7.8 | D+3.8 |
| 2008 | 3 | 3 | D+3 |
| 2010 | 2 | 6.6 | D+6.6 |
| 2012 | 18 | 2.1 | even |
Open Grove Insight in the interactive Trust Index All pollster ratings
Grove Insight is rated B+ in the Crosstab Trust Index (Trust Score 66 of 100, rank 20 of 72, low confidence). Its final polls missed the actual margin by 3.2 points on average, against 3.9 expected for the races it polled, and it called the winner in 88% of races.
Historically, Grove Insight's misses leaned D+1.2 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.