That part you have correct. Adherence to the US Constitution, swearing to uphold and defend the US Constitution, is primary to being qualified to preside over the USA. That is the oath of office.
There is nothing in the oath of office about pretending to be a better religious fruitcake than the other guy.
The vast majority of your type vote liberal, whereas the vast majority of full conservatives vote conservative of course.
Anti-social conservatives, and the anti-religious, are OVERWHELMINGLY LIBERALS.
Really dude? You are going to call people like Reagan who was a social Conservatives along with Palin, Rubio, Toomey, Santorum, DeMint, et al a bunch of Religious Fruitcake Pretenders? Isn't there a Libertarian chat room somewhere waiting for your input on Ron Paul's campaign run?