On April 22, Public Policy Polling released this poll for the special election in South Carolina’s first U.S. House district. The overall poll shows these results: Democrat Elizabeth Colbert Busch 50%, Republican Mark Sanford 41%, Green Eugene Platt 3%, undecided 6%.
Most significant is the question that sorts these responses, depending on how the respondent voted for President in November 2012. Only 1% of the Obama voters intend to vote for Platt. But 5% of the Romney voters intend to do so. See the top of the fourth page. Thanks to Michael for the link.