As I type this, I am watching former Arkansas Governor Mike Huckabee on “The Wendy Williams Show” talking about his impending talk show on Fox and am reminded, not for the first time, that quite a few presidential candidates function as if they never expected or even wanted to be president in the first place. They ran to gain a media platform. But few have done so as brazenly as Huckabee, who typically ended his homespun stump homilies with pedestrian pluckings of his bass guitar. Huckabee’s ultimate role in the 2008 race was to assist in the splintering of evangelicals...