It's the final countdown for GOP presidential hopefuls in Iowa. Mitt Romney, Ron Paul and Rick Santorum lead the pack. Who is likely to win? And whose presidential dreams are over? We talk with Carol Marin who joins us live from Des Moines, Iowa.

Related Links:

Carol Marin's Chicago Sun-Times column on Iowa caucuses

Chicago Tribune article on Iowa predictions

Chicago Tribune and Reuters article on Iowa caucuses with video

The New York Times: Iowa Caucus Projections