The context in which he shared his political affiliation is "I'm not too gay" and "I'm just like you."
Munchkin03 and I weren't saying anything negative about Republicans--I don't like anyone or anything when it comes to politics. We are talking about minorities who feel the need to overstate. He could be Republican for a number of reasons. But, again, this context makes me think his life is consciously and/or subconsciously centered around proving he's different.
ETA: I just saw Munchkin03 and 33girl's posts.