LOL, is that you Rove?
There is the recently reported strategy, still in play, of challenging Trumps delegates for their legitimacy, especially in the winner take all states, at the Convention. This may occur, according to the rules, before the first ballot is cast, or immediately thereafter.
____________________________________________________________
So if delegates get challenged after the first vote is cast and disqualified. Then it goes to 2nd vote and nominee choice is blown wide open??