I will go out on a limb and make a prediction just to see how close I come: Drumph will not be the candidate. The Republican establishment will pull out all the stops to avoid that. They will remember Goldwater and recognise that Drumph won't stand a chance against either Democrat. They will do all the dirty back-room deals they can to avoid this. I can't say Kaisich will be the one, because he doesn't seem to have a lot of pulling power, but it won't be Drumph. He terrifies the GOP and his nomination would mean the effective end of it.
Republican strongmen to play dirty? That would send the guy who wins fair and square into amok.
Are you implying that the Don fights "fair and square"?