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

Market Shares Corp.

Pollsters with a relatively small number of polls now receive a provisional rating rather than a precise letter grade.
A/B
Polls analyzed25
Races called correctly84%
Most recent cycle2012
Affiliated with professional polling organization (NCPP/AAPOR/Roper)Yes

How accurate are the polls from Market Shares Corp.?

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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