Reporters always use this type of question to fish for sound bites they can use to attack someone. If he says that Mormon's aren't Christians then he can be cast as a religious fanatic intolerant bigot. If he says that they are then they think that can be used against him by pissing off conservative Christians who don't feel that way. It's a lose-lose situation they always try to put Republicans or conservatives in.
You sure are right about that....