I’m not seeing how there could be a brokered convention at this point.
That depends on Trump taking most of the winner takes all states, and blocking all the other candidates from winning a majority in 8 states - further assuming the RNC holds to its rules, which it is not bound to do.
Otherwise, pool the delegates form ALL the other candidates against Trump, and put them in one vessel. The party hacks have their eye on Paul Ryan for that role. Romney could run again too.
I predict an uncomfortable GOP convention. They do not want Trump to look like a contender. He's not "like them."
With 48 different state GOPe committees working hard to engineer how 2nd, 3rd, etc. place candidate delegates might commit to an alternative to save the party and avoid embarrassment and disaster. Y’know, someone seasoned and respectable like Dole, McCain, and Romney were. These B&st%÷ds don’t want to win the white house. Deathly afraid of it actually. Fear of BDS II infects pub elite. They really didn’t like RWR much either at their country club core.