Former South Carolina Gov. Mark Sanford gestures after voting at a polling place in Charleston, S.C., Tuesday, May 7, 2013. Sanford, a Republican, and Elizabeth Colbert Busch, a Democrat and sister of political satirist Stephen Colbert, are to face off for the 1st Congressional District seat, that was vacated when Tim Scott was appointed to the U.S. Senate. Green Party candidate Eugene Platt also is on the ballot. (AP Photo/Rainier Ehrhardt)

Associated Press
Former South Carolina Gov. Mark Sanford gestures after voting at a polling place in Charleston, S.C., Tuesday, May 7, 2013.  Sanford, a Republican, and Elizabeth Colbert Busch, a Democrat and sister of political satirist Stephen Colbert, are to face off for the 1st Congressional District seat, that was vacated when Tim Scott was appointed to the U.S. Senate. Green Party candidate Eugene Platt also is on the ballot.  (AP Photo/Rainier Ehrhardt)
Former South Carolina Gov. Mark Sanford gestures after voting at a polling place in Charleston, S.C., Tuesday, May 7, 2013. Sanford, a Republican, and Elizabeth Colbert Busch, a Democrat and sister of political satirist Stephen Colbert, are to face off for the 1st Congressional District seat, that was vacated when Tim Scott was appointed to the U.S. Senate. Green Party candidate Eugene Platt also is on the ballot. (AP Photo/Rainier Ehrhardt)
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