SEVERAL slow-moving but massive changes in American society over the past generation have reconfigured the fault-lines of American politics. Two of these changes—the impact of family structure and religion—are well known. In the 2000 election, AI Gore carried unmarried men by 2 percentage points over George W. Bush, while losing to him by 20 points among married men. He carried unmarried women by a stunning 31 points, while managing no better than a statistical tie among married women. Gore carried the 14 percent of voters who never go to church by 29 points over George W. Bush, while losing to Bush by 27 points among the 14 percent of voters who attend religious services more than once a week.