Iowa Caucus Circus

Once every 4 years the eyes of the nation turn to the Midwestern state as politicians bring their show on the road to win votes.
Mark Halperin, John Heilemann, and Mark McKinnon discuss the upcoming Iowa Caucuses while pondering whose careers will be established and whose will .
Clinton swipes at Sanders as Iowa caucuses approach.
Ted Cruz puts in the time in Iowa to send a message about his conservative politics, values and faith in religion. Get an inside look at the greatest political show .