PUBLISHED Mar. 25, 2021, at 10:00 AM

FiveThirtyEight’s Pollster Ratings

Based on the historical accuracy and methodology of each polling organization’s polls.

Read moreDownload the dataSee the latest polls

Opinion Savvy/InsiderAdvantage

B
Polls analyzed140
Races called correctly67%
Most recent cycle2021
Affiliated with professional polling organization (NCPP/AAPOR/Roper)No

How accurate are the polls from Opinion Savvy/InsiderAdvantage?

Polls conducted within 21 days of an election (based on the poll’s median date) are used to determine the pollster’s grade.

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