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.
Pollster: Monmouth University Polling Institute Remove ×
Matching polls
58Senate polls by Monmouth University Polling Institute.
Polls per month
13
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Latest poll in the database ended Nov 2, 2026. Source: 99chambers polls database
| Dates | Question | Pollster | Sponsor | Sample | Pop. | Mode | Result | Margin | Adjusted | vs result | Source |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug 20–23, 2016 | 2016 United States Senate election in North Carolina (2016) | A− Monmouth University Polling Institute | — | 401 | V | — | Ross 43 · Burr 45 | R+2 | — | — | Release |
| Aug 19–22, 2016 | 2016 United States Senate election in Missouri (2016) | A− Monmouth University Polling Institute | — | 401 | V | — | Kander 43 · Blunt 48 | R+5 | — | — | Release |
| Aug 18–21, 2016 | 2016 United States Senate election in Ohio (2016) | A− Monmouth University Polling Institute | — | 402 | V | — | Strickland 40 · Portman 48 | R+8 | — | — | Release |
| Aug 13–16, 2016 | 2016 United States Senate election in Indiana (2016) | A− Monmouth University Polling Institute | — | 403 | V | — | Bayh 48 · Young 41 | D+7 | — | — | Release |
| Aug 12–15, 2016 | 2016 United States Senate election in Florida (2016) | A− Monmouth University Polling Institute | — | 402 | V | — | Murphy 43 · Rubio 48 | R+5 | — | — | Release |
| Jul 9–12, 2016 | 2016 United States Senate election in Colorado (2016) | A− Monmouth University Polling Institute | — | 404 | V | — | Bennet 48 · Glenn 35 | D+13 | — | — | Release |
| Jul 8–11, 2016 | 2016 United States Senate election in Iowa (2016) | A− Monmouth University Polling Institute | — | 401 | V | — | Judge 42 · Grassley 52 | R+10 | — | — | Release |
| Jul 7–10, 2016 | 2016 United States Senate election in Nevada (2016) | A− Monmouth University Polling Institute | — | 408 | LV | — | Masto 40 · Heck 42 | R+2 | — | — | Release |
Showing 51–58 of 58
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)