But despite belonging to the largest religious group in the state, their power play has been limited because they can't agree on which "conservative" candidate to back: Newt Gingrich, Rick Perry or Rick Santorum.
Javan Browder, a former Bachmann staffer who was the co-director of the South Carolina Tea Party Coalition, supports Santorum now, and senses that many Christians will shift toward the Santorum, as he has.
"I think people respect Rick Santorum as a man of faith and character, though they may not agree with him on the issues 100 percent," Browder said. "To me faith and character are the most important things to consider. To me it's about realness."