Former South Carolina Gov. Mark Sanford addresses supporters in Charleston, S.C., on Tuesday, March 19, 2013, after advancing to the GOP primary runoff in a race for a vacant South Caro

 

              Former South Carolina Gov. Mark Sanford addresses supporters in Charleston, S.C., on Tuesday, March 19, 2013, after advancing to the GOP primary runoff in a race for a vacant South Caro
Former South Carolina Gov. Mark Sanford addresses supporters in Charleston, S.C., on Tuesday, March 19, 2013, after advancing to the GOP primary runoff in a race for a vacant South Carolina congressional seat. Sanford, trying to make a political comeback, was one of 16 Republicans running in Tuesday's primary. (AP Photo/Bruce Smith)