I miss the old Mike Huckabee. No, not the circa-1998 porker who could have given John Madden a run for his money in a turducken eating contest; I mean the Mike Huckabee of 2007—the charming, warm-hearted country preacher who, it seemed, genuinely wanted to give a good account of his religion and his political ideology. This was the Huckabee who, rather than simply catering to anti-abortion conservatives with fiery rhetoric, challenged those who call themselves pro-life to think about the implications of that label. “I believe that life begins at conception,” he told Time in March ’07, “but I don’t...