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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Matching polls

4,582

Senate polls.

Polls per month

287
Jul 2015Jan 2017Jan 2018Jan 2019Jan 2020Jan 2021Jan 2022Jan 2023Jan 2024Jan 2025Nov 2026

November, so far

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

DatesQuestionPollsterSponsorSamplePop.ModeResultMarginAdjustedvs resultSource
Jul 29–Aug 1, 20162016 United States Senate election in Pennsylvania (2016)Not averagedB− Franklin & Marshall College—661RV—McGinty 38 · Toomey 30D+8——Release
Jul 29–Aug 1, 20162016 United States Senate election in Pennsylvania (2016)B− Franklin & Marshall College—389LV—McGinty 39 · Toomey 38D+1——Release
Jul 29–Aug 1, 20162016 United States Senate election in New Hampshire (2016)Not averagedA MassINC Polling GroupWBUR609V—Hassan 48 · Ayotte 37D+11——Release
Jul 29–Aug 1, 20162016 United States Senate election in New Hampshire (2016)A MassINC Polling GroupWBUR609V—Hassan 50 · Ayotte 40D+10——Release
Jul 31–Aug 1, 20162016 United States Senate election in Kentucky (2016)B+ Harper Polling—500V—Gray 38 · Paul 50R+12——Release
Jul 29–31, 20162016 United States Senate election in Pennsylvania (2016)B+ Public Policy Polling—1,505V—McGinty 41 · Toomey 42R+1——Release
Jul 29–31, 20162016 United States Senate election in Nevada (2016)B+ Rasmussen ReportsKTNV-TV750LV—Masto 41 · Heck 42R+1——Release
Jul 29–31, 20162016 United States Senate election in Georgia (2016)A SurveyUSAWXIA-TV Atlanta570V—Barksdale 39 · Isakson 48R+9——Release
Jul 31, 20162016 United States Senate election in Georgia (2016)A− Landmark CommunicationsWSB-TV787V—Barksdale 41 · Isakson 46R+5——Release
Jul 25–27, 20162016 United States Senate election in Pennsylvania (2016)A Suffolk University—500V—McGinty 43 · Toomey 36D+7——Release
Jul 25–27, 20162016 United States Senate election in New Hampshire (2016)B− GBA Strategies—600V—Hassan 47 · Ayotte 47Even——Release
Jul 22–24, 20162016 United States Senate election in Ohio (2016)B+ Public Policy Polling—1,334V—Strickland 38 · Portman 43R+5——Release
Jul 22–24, 20162016 United States Senate election in Nevada (2016)B+ Rasmussen ReportsKTNV-TV750LV—Masto 37 · Heck 46R+9——Release
Jul 23–24, 20162016 United States Senate election in Missouri (2016)A Mason-Dixon Polling & Research, Inc.St. Louis Post-Dispatch625V—Kander 43 · Blunt 47R+4——Release
Jul 11–23, 20162016 United States Senate election in Vermont (2016)— Castleton University—637V—Leahy 62 · Milne 23D+39——Release
Jul 19–21, 20162016 United States Senate election in New Hampshire (2016)B− InsideSources/NH Journal—1,166V—Hassan 41 · Ayotte 49R+8——Release
Jul 20, 20162016 United States Senate election in Wisconsin (2016)C Global Strategy Group—800V—Feingold 52 · Johnson 41D+11——Release
Jul 18–20, 20162016 United States Senate election in Ohio (2016)A Suffolk University—500V—Strickland 33 · Portman 37R+4——Release
Jul 9–18, 20162016 United States Senate election in New Hampshire (2016)C University of New HampshireWMUR469V—Hassan 45 · Ayotte 42D+3——Release
Jul 13–17, 20162016 United States Senate election in New York (2016)A− Quinnipiac University—1,104V—Schumer 60 · Long 28D+32——Release
Jul 14–16, 20162016 United States Senate election in Illinois (2016)B− The Illinois Poll - Victory Research—1,200V—Duckworth 46 · Kirk 37D+9——Release
Jul 5–16, 20162016 United States Senate election in Idaho (2016)A+ Dan Jones & Associates—601V—Sturgill 20 · Crapo 57R+37——Release
Jul 13–15, 20162016 United States Senate election in Ohio (2016)B− CBS News/YouGov—1,104V—Strickland 40 · Portman 41R+1——Release
Jul 13–15, 20162016 United States Senate election in Iowa (2016)B− CBS News/YouGov—998V—Judge 37 · Grassley 45R+8——Release
Jul 12–14, 20162016 United States Senate election in Indiana (2016)B+ Garin-Hart-Yang Research Group—602V—Bayh 54 · Young 33D+21——Release
Jul 11–14, 20162016 United States Senate election in Illinois (2016)C+ Normington, Petts & Associates—800V—Duckworth 40 · Kirk 38D+2——Release
Jul 11–12, 20162016 United States Senate election in Missouri (2016)B+ Public Policy Polling—959V—Kander 38 · Blunt 41R+3——Release
Jul 11–12, 20162016 United States Senate election in Illinois (2016)C− Basswood Research—800V—Duckworth 40 · Kirk 42R+2——Release
Jul 9–12, 20162016 United States Senate election in Colorado (2016)A− Monmouth University Polling Institute—404V—Bennet 48 · Glenn 35D+13——Release
Jul 9–12, 20162016 United States Senate election in Colorado (2016)A− Fox News—600V—Bennet 51 · Glenn 36D+15——Release
Jun 30–Jul 11, 20162016 United States Senate election in Pennsylvania (2016)A− Quinnipiac University—982V—McGinty 39 · Toomey 49R+10——Release
Jun 30–Jul 11, 20162016 United States Senate election in Ohio (2016)A− Quinnipiac University—955V—Strickland 40 · Portman 47R+7——Release
Jul 5–11, 20162016 United States Senate election in North Carolina (2016)B+ Marist UniversityNBC, WSJ907V—Ross 41 · Burr 48R+7——Release
Jul 8–11, 20162016 United States Senate election in Kansas (2016)A SurveyUSAKSN News537V—Wiesner 33 · Moran 52R+19——Release
Jul 8–11, 20162016 United States Senate election in Iowa (2016)A− Monmouth University Polling Institute—401V—Judge 42 · Grassley 52R+10——Release
Jun 30–Jul 11, 20162016 United States Senate election in Florida (2016)A− Quinnipiac University—1,015V—Murphy 37 · Rubio 50R+13——Release
Jul 5–11, 20162016 United States Senate election in Florida (2016)B+ Marist UniversityNBC, WSJ871V—Murphy 44 · Rubio 47R+3——Release
Jul 5–11, 20162016 United States Senate election in Colorado (2016)B+ Marist UniversityNBC, WSJ794V—Bennet 53 · Glenn 38D+15——Release
Jul 7–10, 20162016 United States Senate election in Wisconsin (2016)Not averagedB+ Marquette University—801RV—Feingold 48 · Johnson 41D+7——Release
Jul 7–10, 20162016 United States Senate election in Wisconsin (2016)Not averagedB+ Marquette University—801RV—Feingold 45 · Johnson 38D+7——Release
Jul 7–10, 20162016 United States Senate election in Wisconsin (2016)Not averagedB+ Marquette University—665LV—Feingold 49 · Johnson 44D+5——Release
Jul 7–10, 20162016 United States Senate election in Wisconsin (2016)B+ Marquette University—665LV—Feingold 46 · Johnson 40D+6——Release
Jul 5–10, 20162016 United States Senate election in Pennsylvania (2016)B+ Marist UniversityNBC, WSJ829V—McGinty 47 · Toomey 44D+3——Release
Jul 5–10, 20162016 United States Senate election in Ohio (2016)B+ Marist UniversityNBC, WSJ848V—Strickland 44 · Portman 44Even——Release
Jul 7–10, 20162016 United States Senate election in Nevada (2016)A− Monmouth University Polling Institute—408LV—Masto 40 · Heck 42R+2——Release
Jul 5–10, 20162016 United States Senate election in Iowa (2016)B+ Marist UniversityNBC, WSJ822V—Judge 42 · Grassley 52R+10——Release
Jul 5–10, 20162016 United States Senate election in Idaho (2016)B+ Lake Research Partners—500V—Sturgill 35 · Crapo 37R+2——Release
Jul 9–10, 20162016 United States Senate election in Florida (2016)C JMC Analytics—700V—Murphy 33 · Rubio 40R+7——Release
Jul 7–9, 20162016 United States Senate election in Colorado (2016)B+ Harper Polling—500V—Bennet 46 · Glenn 40D+6——Release
Jul 1–6, 20162016 United States Senate election in Colorado (2016)— Senate Conservatives Fund—500V—Bennet 47 · Glenn 42D+5——Release
Showing 4,401–4,450 of 4,582

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)