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: Harstad Strategic Research, Inc. Remove ×
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1Senate polls by Harstad Strategic Research, Inc..
Polls per month
1
Sep 2015
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 10–16, 2015 | 2016 United States Senate election in Ohio (2016) | B− Harstad Strategic Research, Inc. | — | 813 | V | — | Strickland 46 · Portman 43 | D+3 | — | — | 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)