In the US, to say that one does not subscribe to any religious belief is tantamount to political suicide. It is better to have faith, and the implication that one is guided by a higher power is acceptable to many of the more fundamentalist groups. Even if you do not ascribe to their flavor of religion, you'd better at least have some kind of religion if you want to get elected to high office. There are an awful lot of people who actually believe that "under god" is one of the founding tenets of this land. It's on our money, so it must be true.
It's sick, but it's true. The person who gets elected is the one whom the most sheep will follow, and most of the sheep consider themselves to have some form of religion, so they expect some in their leaders. Mitt Romney is a Mormon, and I think there are people who see that as preferable to atheism or nontheism.
