Trust Score 28/100, rank #57 of 72 (low confidence; grade held in 39% of 400 resamples, plausible rank #28–71). Consistent R tilt.
| Trust Score percentile | 19th (median 49) |
| Accuracy versus expected | 17th percentile |
| Random miss (consistency) | ±5.4 pts |
| Method | Live Phone |
| Transparency score | 6/10 |
| Cycle | Polls | Avg error | Bias |
|---|---|---|---|
| 1998 | 4 | 10.9 | R+10.9 |
| 2000 | 7 | 8 | R+5.2 |
| 2002 | 4 | 3.7 | R+2.3 |
| 2004 | 2 | 3.2 | D+0.9 |
| 2006 | 1 | 4.5 | D+4.5 |
| 2008 | 1 | 1.1 | R+1.1 |
| 2010 | 2 | 3.1 | R+3.1 |
| 2012 | 1 | 0.5 | D+0.5 |
Open Market Shares Corp. in the interactive Trust Index All pollster ratings
Market Shares Corp. is rated C in the Crosstab Trust Index (Trust Score 28 of 100, rank 57 of 72, low confidence). Its final polls missed the actual margin by 6 points on average, against 5.6 expected for the races it polled, and it called the winner in 82% of races.
Historically, Market Shares Corp.'s misses leaned R+4.1 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.