In general, Huckabee performs best among religious voters, with 30 percent of those who attend church weekly supporting him. Romney, however, polled best among those who are not religious. He is the top pick among those who do not attend church weekly (24 percent). Within the GOP, one-third of those who are not religious or belong to a smaller faith group want Romney as the Republican nominee. Only 7 percent said they preferred Huckabee. Indeed, both former Alaska governor Sarah Palin (14 percent) and Rep. Ron Paul (R-Texas) (8 percent) did better than Huckabee among those who are nonreligious or belong to a smaller faith group.

Palin also did well among evangelicals, with 16 percent voicing support for her. A sizable number of mainline Protestants also support her (13 percent). She fared worse among Catholics, with only six percent naming her as their top choice.