Murphy: Here we are on the eve of the Iowa Caucus. When there are 41 percent of the voters who are undecided, the choice comes down to "electability" and "most conservative." In 2008, there were a gaggle of moderates: John McCain, Mitt Romney, Rudy Giuliani and Ron Paul. There were plenty of conservatives: Mike Huckabee, Fred Thompson, Duncan Hunter and Tom Tancredo. Huckabee garnered the most of the 60 percent of the conservatives who voted in the caucus. He picked up almost 35 percent.
