Former South Carolina Gov. Mark Sanford was a rising star in the Republican Party when he went missing for several days in 2009. He initially claimed he was hiking the Appalachian Trail, but after being caught at the airport, ultimately admitted he was having an affair with a woman in Argentina, who he described as his "soul mate." His wife filed for divorce later that year. Sanford is now running for his old congressional seat, which became empty when Rep. Tim Hass was appointed to the Senate. He is also engaged to his one-time mistress.