Trump's base in 2016 was defined not by race or class, but by belief in God. Evangelical Christians and Catholics came together and pushed Trump to the win, in defiance of the media, academia, Hollywood, the professional class, elite Republicans, the Democrat masses, libertarians, and self-professed moralists. Both the pope and many prominent Protestant leaders expressed antagonism toward Trump, so this mass of religious voters defied their church elders as well. This was nothing less than stunning. It was perhaps one of the great revolutions in America's religious history. Rather than a serious study of this event, we have had...