in south carolina, mark sanford needs no introduction, but after the former governor of this state famously tried to cover up an affair by falsely telling the public he was hiking the appalachian trail -- >> i've been unfaithful to my wife. >> reporter: a reintroduction wouldn't hurt. >> we'd learn a lot about grace and second chances. >> reporter: now sanford is asking for voters for a second chance to win his old congressional seat. >> after what you put the voters through, why should they give you a second chance? >> i think that that's one an individually determined thing, that's what a vote is about. what i would say on the larger notion of forgiveness, some people forgave me the next day, some will never forgive me. >> reporter: sanford still has to win a primary against a field of 15, yes, 15 gop rivals. some are fixtures in state politics, another is the son of ted turner.