Hillary Clinton is far from being an afterthought in the Democratic presidential contest, but she is fading fast. It would be easy, but inaccurate, to assert that she has no one to blame but herself. At least some of the blame for her downward trajectory must be placed at the feet of her husband. Bill Clinton turned into an attack dog in New Hampshire and played the race card in South Carolina, but it's more than that. Conventional wisdom held that she needed him around to win, but having him around probably reminded Democratic voters of the Clintons' unsavory side,...