This is a very good Julian Sanchez post about religion and atheism in American politics: "Undercover Atheists?"
I think a big part of what makes this issue so interesting to me it's one of those debates where both camps see themselves as the oppressed minority. I see a lot of religious people who are convinced Obama, Dawkins & Stewart are trying to dismantle the very foundation of their world view out of pure spite. And I see a lot of secular people who are convinced Santomrum, Limbaugh & Huckabee and about six months away from setting up a theocracy. Both groups are entirely convinced they about to wiped out by the overwhelming forces of Them.