If you're running for major office in the US, announcing your fealty to God is a kind of real-world implementation of Pascal's wager. That is, if you are openly atheist you will earn the condemnation of a large cohort of believers, and lose many votes. But if you're religious, only a small few atheists will write you off as a candidate. So it's always to your political advantage to claim religious adherence, even if you're not. Arguably patently insincere lip-service actually works better than principled devotion in this respect.