16 final polls from 2001 to 2021 (average error 5.6 points): too few to grade. Crosstab grades every 2026 pollster on its own results after Election Day.
Open Roanoke College Institute for Policy and Opinion Research in the interactive Trust Index All pollster ratings
Roanoke College Institute for Policy and Opinion Research has 16 final polls in the 1998–2022 results data, too few to receive a grade (at least 20 graded polls are needed). Its average error was 5.6 points.
Historically, Roanoke College Institute for Policy and Opinion Research's misses leaned D+1.6 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.