Trust Score 70/100, rank #14 of 72 (medium confidence; grade held in 59% of 400 resamples, plausible rank #4–41). Highly accurate · Consistent D tilt · Transparency member.
| Trust Score percentile | 81th (median 49) |
| Accuracy versus expected | 58th percentile |
| Random miss (consistency) | ±4.4 pts |
| Method | Live Phone |
| Transparency score | 10/10 · AAPOR/Roper member |
| Cycle | Polls | Avg error | Bias |
|---|---|---|---|
| 2005 | 1 | 1.4 | R+1.4 |
| 2006 | 2 | 10 | R+10 |
| 2008 | 4 | 3.4 | D+3.4 |
| 2009 | 3 | 3.9 | D+3.9 |
| 2010 | 9 | 3.7 | R+1.9 |
| 2012 | 2 | 5.4 | R+5.4 |
| 2013 | 3 | 1.7 | D+1.1 |
| 2014 | 14 | 4.2 | D+3.6 |
| 2016 | 20 | 5.1 | D+5 |
| 2017 | 3 | 3 | R+3 |
| 2018 | 6 | 4.9 | R+3.2 |
| 2020 | 10 | 10.5 | D+10.5 |
| 2021 | 2 | 4.9 | D+4.9 |
Open Monmouth University Polling Institute in the interactive Trust Index All pollster ratings
Monmouth University Polling Institute is rated A- in the Crosstab Trust Index (Trust Score 70 of 100, rank 14 of 72, medium confidence). Its final polls missed the actual margin by 5.2 points on average, against 5.5 expected for the races it polled, and it called the winner in 67% of races.
Historically, Monmouth University Polling Institute's misses leaned D+2.7 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.