"Anyone who has even a passing knowledge of Republican politics would know more than this."
I believe he is referring to his policy changes on abortion and his hunting prowess.
I considered that and rejected it because it would be next to impossible to construct a more convoluted statement.
Mitt Romney is not considered a religious conservative by anyone, now or at anytime. If it was a snide attempt to attack Romney for flip-flopping the writer needs to take a look at Giuliani's recent statements on abortion and gun control.