This is an interesting read for the real Master of our Policies. Wasn't it rumored he was "Mormon." According to PBS, it appears he was raised without religion.
PBS Frontline: Kral Rove - The Architect (nice, huh).
He comes from Utah. Is he a Mormon? Is he religious? What's his religious background?
... Karl was born in Denver but grew up really in Utah, in this area where almost everybody was Mormon, and he was not. He would see it almost every day in high school in a situation where students who were Mormon would go across the street for an hour of Mormon training, while the non-Mormon kids, the minority, would stay behind in study hall.
His family was not very religious. He grew up, he admits, in a nonreligious household. And even during his political career very early on, when I first met him in the middle '80s, it was clear that religion was not something that was particularly important to him. But the use of religious people, the constituencies, the advantage of putting those constituencies together for political purpose, was something that really intrigued him. Religion was something that was never important to Karl. He never really talked about it very much, I think, with people at the time. In fact, I got the clear impression that he was a person who was not religious at all.
http://www.pbs.org/wgbh/pages/frontline/shows/architect/interviews/slater.html