I would not trust him to be anything other than an opportunist. He switches parties only to get reelected. He must be operating some kind of scam which he will be caught at in a couple of years.
Apparently he is a Conservative. He endorsed Vitter for reelection to the U.S. Senate in 2010 and has supported Gov. Jindal’s agenda. Switching parties in that district, which I believe is majority Black, could be political suicide for him, so this would have to be a principled action.