I don't see the argument that Trump is trolling. He's spent considerable time over the past several years injecting himself into the political debate, which now

I don't see the argument that Trump is trolling. He's spent considerable time over the past several years injecting himself into the political debate, which now seems like his clear intention was to position himself as a viable candidate for the presidency. He's also reaching a point in his campaign where he's spending considerable time preparing himself for the primary season and will also need to start spending considerable money. It's hard to really see why he would do all this in order to make Jeb Bush seem "less bad". If you recall the 2012 primary, there were a similar number of candidates, but the person who won was the most moderate of them, Mitt Romney. However, in 2012, there was never really on "outsider" as popular as Trump. I think it's less apt to compare Trump to Herman Cain than it is to compare him to the runs of Steve Forbes or Ross Perot. Trump's current popularity might be completed related to the fact that he isn't coming from a political background and isn't acting like a politician. Mark Cuban said he doesn't necessarily support Trump's positions, but does support the idea that we need more people like Trump involved in politics.