Not "just like". Not even close. Mormons are by and large mainstream Americans. Their theology may be misplaced, but their hearts, by and large are not. I would have no trouble voting for a Mormon as president. As a Christian I am well aware of the verse which states that the heart of the Ruler is in the hand of God. So ultimately God is in control and we have nothing to fear.
If you would refuse to vote for a Mormon on the grounds that he is a Mormon, but would instead let a "good Methodist" like Hillary Clinton take the reigns because you can't see fit to vote for a Mormon, then your priorities are really messed up.
I would not vote for Harry Reid for dog catcher, as he is a phony baloney and is about as committed to Mormonism as he is to George Bush. But Mitt Romney has promise. If he overcomes this rabid anti-Mormon bias that people like you have and gets the nomination, he can count on my vote. Right now there are others I would prefer, but I don't think any of them are electable. At least not right now.
BTW if you are only going to vote for people whose beliefs match your own, I'd suggest you stop registering to vote.
Mormons are by and large mainstream Americans.