You are aware, aren't you, that the statement "Religion should not be a factor" -- is itself a statement from a specific religious vantage point.
IOW, your religious worldview, whatever it may be, informs you that you don't want to integrate religion into at least some of your political worldviews.
Therefore, your religious worldview of compartmentalization is a factor in your considerations.
Why? Why is it "A-OK" for your religious worldview that attempts to hermetically seal these things; but it's "not 'OK'" for somebody who integrates these things?
How many times can a person type “religious worldview” without appearing to be a tad pretentious?
BTW. I would absolutely love it if our next president were a born-again Christian. (Doubtful that “our” 2012 candidate will be that.)