Former South Carolina Gov. Mark Sanford speaks with a vendor at the Mount Pleasant Farmers Market in Mount Pleasant, S.C., Tuesday, May 7, 2013. He faces Elizabeth Colbert Busch, the sister of political satirist Stephen Colbert, and Green Party candidate Eugene Platt, in Tuesday's balloting. (AP Photo/Rainier Ehrhardt)
Former South Carolina Gov. Mark Sanford speaks with a vendor at the Mount Pleasant Farmers Market in Mount Pleasant, S.C., Tuesday, May 7, 2013. He faces Elizabeth Colbert Busch, the sister of political satirist Stephen Colbert, and Green Party candidate Eugene Platt, in Tuesday's balloting. (AP Photo/Rainier Ehrhardt)
Former South Carolina Govs. Mark Sanford (left) and Jim Edwards and state Rep. Chip Limehouse, who lost to Sanford in the March primary for the state's open House seat, speak with voters during a campaign stop at a diner in Mount Pleasant, S.C., on May 6, 2012. Sanford faces Elizabeth Colbert Busch, the sister of comedian Stephen Colbert, in a special congressional election in the state's 1st District. (Associated Press)
Former South Carolina Govs. Mark Sanford (left) and Jim Edwards and state Rep. Chip Limehouse, who lost to Sanford in the March primary for the state's open House seat, speak with voters during a campaign stop at a diner in Mount Pleasant, S.C., on May 6, 2012. Sanford faces Elizabeth Colbert Busch, the sister of comedian Stephen Colbert, in a special congressional election in the state's 1st District. (Associated Press)
Elizabeth Colbert Busch, the sister of comedian Stephen Colbert, has been rolling through South Carolina aboard a splashy campaign bus in her quest to win this week's special election for the U.S. House representing the 1st District. (Elizabeth Colbert Busch for Congress)
Elizabeth Colbert Busch, the sister of comedian Stephen Colbert, has been rolling through South Carolina aboard a splashy campaign bus in her quest to win this week's special election for the U.S. House representing the 1st District. (Elizabeth Colbert Busch for Congress)
A screen grab of former President Bill Clinton's faux Twitter account for comedian Stephen Colbert.
A screen grab of former President Bill Clinton's faux Twitter account for comedian Stephen Colbert.
Stephen Colbert made a pitch to be appointed a U.S. senator for his native South Carolina but Gov. Nikki R. Haley noted he didn’t know that milk is the state drink. (Associated Press)
