How about being specific about theological beliefs as a point of integrity? Yeah you've got different brands of Christianity with different bases of what they actually believe, and a theological statement with any doctrinal specificity might alienate some and cause others to follow him. I'm wagering the fact that he's willing to state definitively what he believes about Christianity will win more than he'll lose since it will say something about how he's not afraid to lose voters on this issue. It's the same perspective on how so many people look up to Dr. Paul for being a lone anti-war candidate in a field of warmongers. The fact that he's willing to do such a thing, regardless if he loses support in the GOP or gets ridiculed by his peers is incredibly telling about what kind of man he really is. In the same way being specific about your faith you might get people who disagree with you, but more people respect you for being willing to actually say what you believe rather than being afraid of losing support.