The party had an excellent chance to stop Trump after the Wisconsin primary. Did you see the committee members rallying around Cruz? Was there any push to get Trump to engage in a one-on-one debate? Any major denouncements of the ridiculous things Trump has said over the last few months. The guy accused Cruz’s dad of being involved in the JFK assassination for crying out loud - the day if the Indiana primaries! Which prominent republicans denounced that statement?
I guess you’re still drinking the kool-aid that Trump has a snowball’s chance of beating Hillary. How can a nomination be stolen when no such vote for the nomination has yet taken place? Trump won a majority of preference polls by a plurality of voters with various political affiliations. The rules to nominate a candidate are not established until immediately prior to the National Convention. The RNC steam rolled through the rules meeting and refused to put the rules to a vote amongst the delegates. Deciding instead to add a rule that officially binds delegates to a candidate, a rule that had been included only once in the last 100 years. That time was in 1976 to nominate Ford instead of Reagan. And also a rule to give the RNC absolute discretion to change the rules at any time over the next fours years, entirely as the committee sees fit.
It is the delegates’ job to nominate a candidate and the RNC took this responsibility away from them. Put it to a vote by those that THE PEOPLE chose to vote. Literally any current Republican House or Senate member or Governor would have a better chance than Trump, even after being nominated on the convention floor.