I just got back from seeing Bush speak a couple hours ago. His speech was not religious at all. Even if he mentioned god a couple times, it was certainly not the focus. I thought his statement on freedom was a very good one. I can't quote it exactly, but he said something like "freedom is not a gift from America, it is a gift from God to every one of us." To me, the point seemed to be that freedom was not just something we decided the Iraqis and Afghanis should have, but rather it was a natural right that we helped bring back.
The fact that he is a religious person does not make him a zealot. His religion has guided and shaped his own moral beliefs, but has certainly not been an emphasis of his campaign, nor was it even really brought up in his speech tonight.