B/C
| Polls analyzed | 2 |
| Races called correctly | 100% |
| Most recent cycle | 2020 |
| Affiliated with professional polling organization (NCPP/AAPOR/Roper) | Yes |
How accurate are the polls from Winthrop University?
Polls conducted within 21 days of an election (based on the poll’s median date) are used to determine the pollster’s grade.
2020
Key
A = Adults
RV = Registered voters
V = Voters
LV = Likely voters
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Feb 9-19 | 443LV | President (SC) Democratic primary | Live Phone | Poll Biden (D) +5.0 | Actual Biden (D) +28.9 | Difference 23.9 |
2016
| Dates | Sample | Race | Methodology | Poll margin | Election margin | Difference |
|---|---|---|---|---|---|---|
| Oct 23-30 | 712LV | President (VA) General election | Live Phone | Poll Clinton (D) +6.0 | Actual Clinton (D) +5.3 | Difference 0.7 |
| Oct 23-30 | 712LV | President (VA) General election | Live Phone | Poll Clinton (D) +5.0 | Actual Clinton (D) +5.3 | Difference 0.3 |
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