The fact that you think a persons' religion is an "irrelavant factor" shows that you have an intolerance for those who do not consider it irrelavant. That is the very definition of bigotry, even if you cannot agree. It is not that religion is the sole criterion of judgment, but to some it is an important one.
I don't know of anyone asking anyone to judge Romney solely on his religion. In fact I don't ask anyonee to base their judgment on religion at all. However, it is foolish to think that if Mormon's vote for Romney 8 out of 10 times, that there won't be some who vote against him because they aren't Mormons. It probably won't wipe out the pro-Mormon vote, but it may very will equal it.
You're stretching now. Is that fact I don't think a candidate's soda choice is important somehow bigoted towards those who drink Coke every day? Or does his soda choice really, really matter in the grand scheme of things?
As I said, your definition is a lot different than mine.