Former GOP Presidential hopeful Herman Cain discusses the Iowa caucuses and whether or not he'll endorse anyone.
John King speaks with GOP Presidential candidate Rick Perry on caucus day. He says he's counting on the fact he has a strong national organization to continue in this race.
The Iowa caucuses are just hours away – does GOP presidential candidate Rick Perry have a shot at winning? Find out what he says about his campaign's chances in the early voting states, and why he says Romney "has got a real problem" in South Carolina. Tune in TONIGHT at 6p ET for the full interview on John King, USA.