Hillary Clinton is the final nail in the coffin of the United States Constitution. Donald Trump, if guided properly by the people around him, may very well be the crowbar that begins to open the lid again
Is Donald Trump the perfect Republican Candidate? Absolutely not. Is he a Republican in the first place? I think he might be, but overall he's a wild card. Is Donald Trump a better candidate than the other GOP candidates he beat? In some cases, but not in all of them. Is Donald Trump a better candidate for President of the United States than Hillary Clinton? You bet your bottom dollar he is.
After Donald Trump completed his solid victory in the Indiana Primary (after struggling in States who hold caucuses), his competitors in the GOP race (Ted Cruz and John Kasich) promptly suspended their campaigns. The cleared path makes Donald Trump the presumptive Republican Candidate in the 2016 Presidential Election.