Secular Republicans?

Contemplating the prospects of secular conservatism in the GOP, Andrew Sullivan writes, "I don't see how Republicanism, as it is now constructed, can tolerate atheists in its midst." Clearly, the atheists and other unaffiliated types have gotten the message. Since 2000, the unaffiliated are the only religious grouping that has grown steadily more Democratic in its voting preferences, choosing Gore over Bush 61-30, Kerry over Bush 67-31, and Obama over McCain 75-23. This time around, for the first time, the unaffiliated preferred the Democrat by a larger margin than white evangelicals preferred the Republican.