Mike Huckabee was never about fire and brimstone. As a preacher, he was buoyant. The first time he took to the pulpit, as a 16-year-old preaching on a Sunday night, he turned water into wine. Sort of. "He had a clear bottle of water, a gallon jug of water, and he turned it red," said Don Still, who grew up with Huckabee in the small city of Hope, Ark. "He talked about how God cleanses our soul. He was probably in the 11th or 12th grade, and he was probably taking chemistry and learned it in chemistry." Science or miracle,...