Former South Carolina Gov. Mark Sanford arrives to give his victory speech Tuesday in Mount Pleasant, S.C. Sanford won back his old congressional seat in the state's 1st District in a special election. Rainier Ehrhardt/AP hide caption

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Democrat Elizabeth Colbert Busch and her Republican opponent, former South Carolina Gov. Mark Sanford, debate in Charleston, S.C., on April 29. Randall Hill/Reuters/Landov hide caption

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Joe Biden Has History On His Side But Little Else If Hillary Clinton Runs

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Democrat Elizabeth Colbert Busch and former South Carolina Gov. Mark Sanford debate for the South Carolina 1st Congresional special election in Charleston, S.C., on Monday. Randall Hill/Reuters /Landov hide caption

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