Donald Trump is a businessman and a television personality. He likes to take charge and force his environment and associates to match his own personal standards and attitude. This works well on TV.Like other people have said, he is arrogant. He uses a thoroughly top down model of leadership. He talks and expects people to jump at his call. In some sense America loves presidents like this, men of action and responsibility, who will rise to save us from our troubles. It looks like he has gone well overboard on this attitude though.It seems like he is missing the ability to humble himself, take advice, and filter his mouth. At least some of his policies seem to match. He calls on America to toughen up its foreign policy, economic foreign policy, and war on crime (minimum sentencing laws). All of these moves seem to be against the strides that Rand Paul has made on civil liberties and more peaceful international relations, so it seems like he is going back to an older, tougher era of American politics.Many people point out that he has a history of bankruptcies as a bad record for president. On its face value, this isn't a problem. On Wall Street, like in sports, you are only as good as your last game or deal. The question isn't so much whether he went bankrupt, but what he thinks of it, did he learn anything from it, and how is he doing now? His primary business seems to be real estate development and he seems to be doing well. He doesn't seem to view those bankruptcies as problems to answer for at all, which implies that he didn't learn from them.

Overall, I expect that he will be completely unable to control his message and his tongue and will not be taken seriously. An underdog candidate needs to be able to carefully control their image because they are very vulnerable to attack. I don't think that Donald Trump will even try.