The most common reaction to disgraced former South Carolina governor Mark Sanford's victory Tuesday in a Republican runoff for a Charleston-based House seat goes something like this: What the heck? After all, this is the same Sanford who blew up his political career in 2009 he disappeared from the Palmetto State for five days, told his gubernatorial staff he was hiking the Appalachian Trail and then acknowledged that he had been in Argentina visiting his mistress.