I refuse to make a candidate choice that doesn't integrate what "higher powers" that person is trusting in, be it "Uncle Sam," the UN, L. Ron Hubbard's novel creation of beings out there, Urantia's "master aliens," or an unknown "council of gods."
I do not weigh the above in isolation; a candidate's character and values, position stances on social issues, voting and public track record, etc. are also important to integrate into the entire package.
What I don't understand is those who want to cut a donut hole out of a candidate (his or her faith) and then say, "It's not relevant or at best, it's trivial."
Here is a great blog that critiques Hugh Hewitt’s book and talks about precisely WHY we SHOULD judge a man based upon what he believes.
It made some great points IMO.
http://www.mrm.org/files/images/mormon-white-house-200.png
The person's faith makes no difference. It is how they live it out that matters.