I can't tell the difference at this point, and I think for many neither can they.
For all we know, Trump might be an ironic Trump supporter.
Actually, that's probably not far from the truth. I don't think he thought he had a chance and was just doing it because he likes to have people talk about him. Then doorknobs started telling pollsters that they liked what he was saying. Then the media couldn't stop talking about him (for reasons I still don't fully understand....they even ACKNOWLEDGE that they talk about him too much, then go on to keep talking about him too much). Then it snowballed a bit. He's still not going to win the nomination, the GOP isn't that stupid....they can't be right? His numbers have peaked, eventually one of his MANY views that run totally contrary to his base's views is going to get traction and his numbers will plummet.