I've always wondered how conservative Republicans can proclaim their love for Ayn Rand while ignoring her strident Atheism.
There are libertarian Republicans, and there are fundamentalist Christian Republicans, for two main types, and they are in bed together to have a chance to win elections.
Like Germany and Japan in WWII, they are just using each other and try not to step on each others' toes too much, but if they ever had real power, they'd conflict.
Libertarians turn a blind eye to the Terry Schiavo pandering, and fundamentalist Christians turn a blind eye to corporatist corruption.
They may not like each other much, but they recognize that they are each in a clear minority, and in our system that means zero power if they aren't elected.
So we get some bizarre opportunists, panderers, con men, and passionate true believers who are the leaders of this marriage.
An example of the 'true believer' is Rand or Ron Paul, an example of the con man is Tom DeLay (or operatives like Jack Abramoff), or there are just some odd birds like the weepy John Boehner who seems a bit of several of these types.