Huckabee is a political inconvenience, a destroyer of stereotypes. He is probably best known as the fellow who lost 100 lbs. in a year, and made living well through exercise and good nutrition one of his signature issues as Governor. But the real significance of Huckabee--and, to a lesser extent, Brownback--is that he represents the introduction of a new constituency into the political process: "Second Commandment" Christians, those more interested in salvation than damnation, people like the California pastor Rick Warren, author of The Purpose Driven Life. Huckabee says, "Our church in Little Rock is very similar to Rick Warren's....