A candidates personal faith does not affect my vote. If a good candidate who represents my values is of a different denomination, faith, or an atheist or agnostic matters not to me.

However, in some ways, my morality does affect my vote. Views on abortion, gun control, the environment, taking care of the less fortunate, etc are partially founded in my belief system.

In my case it is tricky, because some moral issues of mine line up with the dems and others with the repubs..so I have to take closer looks at the candidates and less attention to their party.