[PJBankard]

I’m going with a lot closer to 535.

[Robert A Cook PE]

I find it much easier to believe in God than to believe what’s in Congress.

[cincinnati65]

The key is "CLOSETED" atheists. Meaning, they probably represent themselves as Christians to the public, but don't really believe.

I agree the number of atheists in Congress is a lot closer to 535 than 0.