@cicerone imposter,
If the Republicans get to the convention with a candidate that has a plurality of votes and then deny him the nomination, it is not going to bode well for Republicans in particular and the country in general. I could see violence breaking out. As much as I don't like Trump, if he is the majority vote getter for the Republicans, I think he should get their nomination. Trump may not demonstrate the best of democracy, but neither does a party coup.
This could look like the '68 Democratic Convention where the eventual candidate didn't enter a single non-caucus primary and there was violence inside and outside the convention hall.