1. The Evangelical vote
Mike Huckabee surged from an obscure footnote in the Republican race to a contender based in part on his targeting of Evangelical voters. In Iowa, Christian conservatives make up about 40 percent of Republican caucus-goers. Huckabee and Mitt Romney, the two front-runners on the GOP side, have heavily courted this group, and whoever wins their support may win the state.(Getty Images)

Text by James Pindell and Jason Tuohey

