Polls database

Every poll we use, with its source

11,685 polls since 2015: national questions, Senate, House, governor and state legislative races, presidential primaries and ballot measures. Filter, then open any poll’s release.

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Pollster: OpinionWorks Remove ×

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2

Senate polls by OpinionWorks.

Polls per month

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Aug 2016Jan 2018Jan 2019Jan 2020Jan 2021Jan 2022Jan 2023Apr 2024

Latest poll in the database ended Nov 2, 2026. Source: 99chambers polls database

DatesQuestionPollsterSponsorSamplePop.ModeResultMarginAdjustedvs resultSource
Apr 7–10, 20242024 United States Senate election in Maryland (2024)B− OpinionWorksThe Baltimore Sun and WBFF1,292LV—Alsobrooks 36 · Hogan 54R+18——Release
Aug 18–30, 20162016 United States Senate election in Maryland (2016)B− OpinionWorks—754V—Hollen 55 · Szeliga 26D+29——Release
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Adjusted: after house-effect and population corrections. vs result: margin minus the certified or unofficial result. Latest poll in the database ended Nov 2, 2026. Source: each poll’s own release, as cited by the poll list it was compiled from (The New York Times for Senate, governor and House races; Wikipedia for other offices)