- For the Winthrop Poll, the opinions of 1,363 registered voters in South Carolina were taken between April 17-23.
- Results which use all respondents have a margin of error of +/- 2.65% at the 95% confidence level. Reported results using a subset of the entire sample will naturally have a higher margin of error.
Winthrop University, "Winthrop Poll Results Show Opinions of S.C. Registered Voters" (2011). Winthrop News 2011. 72.