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.

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Great Lakes Strategies Group

Pollsters with a relatively small number of polls now receive a provisional rating rather than a precise letter grade.
B/C
Polls analyzed1
Races called correctly0%
Most recent cycle2010
Affiliated with professional polling organization (NCPP/AAPOR/Roper)No

How accurate are the polls from Great Lakes Strategies Group?

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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