I am not very impressed by the candidates, but then again, who wants to be president of a empire on the way down? Definitely not an enviable job.
At the moment the odds on Betfair for the candidates are:
The most "remarkable" candidate is of course Donald Trump, who seems to have at this moment about 15% chance to become president. Hard to believe, but then again, this is America.
One video about "The Donald" on the subject "China":