In a clear sign Stephen Colbert's Super PAC isn't coordinating with the comedian's presidential exploratory bid, a new ad tells voters to back Herman Cain who's still on the ballot in South Carolina.
"He's not a career politician. He's such a Washington outsider he's not even running for president. Send them a message. On Jan. 21, vote Herman Cain."
Colbert announced his bid after the deadline for getting on the ballot.