A funny thing happened on the way to the 2012 presidential contest. The conventional wisdom that social issues would not matter, and that the evangelical constituency is a relic of a bygone era, has been turned on its head. The beltway set is relearning one of the most inconvenient and persistent truths of American politics: the enduring strength of the evangelical vote. This outcome was not necessarily prefigured by events. Barack Obama was supposed to usher in a new era of religious voting patterns by appealing to evangelical voters on poverty, health care and climate change (excuse me, "creation care")....