The ghost of Howard Dean haunts the pundit class. As soon as a candidate of either party spikes up in the polls, he is compared with Dean, who had a spectacular boomlet in the second half of 2003 only to deflate as soon as people began to vote in early 2004. After many false prophecies, Dean circa 2008 has finally arrived. He is former Arkansas Gov. Mike Huckabee. Not because he will inevitably blow himself up in Iowa. But because, like Dean, his nomination would represent an act of suicide by his party. Like Dean, Huckabee is an under-vetted former...