It is always here in the birthplace of the Civil War that things go bump in the night for presidential campaigns. In 2000, John McCain’s surge for the GOP nomination was derailed by rumors he had a love child. Four years ago, Bill Clinton injected race into the Democratic nomination in an effort to derail Barack Obama’s juggernaut campaign in South Carolina. But all the shady twists and turns of the past were nothing compared with the Spanish moss-draped soap opera that has unfolded here in the past week.