jim acosta breaks down his big win. >> some guy came up to me the other day and he said you look a lot like lazarus. >> reporter: oncedead in the political wilderness, mark sanford blazed a comeback trail that will take him all the way to washington. i just want to acknowledge a -- a god not just of second chances, but third, fourth, fifth, sixth, chances. >> reporter: sanford captured a vacant congressional seat by a decisive margin. the extramarital affair fromwit mistress from argentina while claiming to be on the appalachian trail may finally be behind them. >> is this redemption? >> we'll see. it's less about that than trying to make a second chance in washington, d.c. >> reporter: if sanford's life has at times seemed like a trashy romance novel, this latest chapter has been a page turner. for some voters all was forgiven. >> ye who is without sin cast the first stone. >> reporter: others not so much. are you tired of him? >> i don't like him. don't trust him. >> reporter: it wasn't enough to help sanford's opponent, elizabeth colbert bush in this conservative district. >> i will continue to fight for all of yo