The thing is, if people actually vote for him to get the nomination, and then for his party, it's actually the American public who will hand him the keys to the White House.
Some of the comments here seem to forget that it's not Mr Trump simply manufacturing the wins and any poll leads - ordinary Americans are doing that.
So if he gets elected to be the head of one of the largest democracies in the world, you're left with one choice really. You either accept the democratic will of the people or you decide you know better than they do.
It was Winston Churchill who said that the best argument against democracy was a five minute conversation with the average voter....
As I have said multiple times the election isn't about the people. The people vote you speak of is called the popular vote but the votes that win the election are something different based on delegate votes etc. Whilst there can be correlation there isn't always as demonstrated by Obamas second term.