They don't though. 48 states require their delegates to vote for the nominee the people selected on the first ballot. If the other two states don't like it then elect people who will change it. How is it any different from Senate or House or President? They're all elected to vote for us.
A candidate can't even be nominated for the first vote without having won 8 states, so even if this crazy conspiracy theory about all the delegates not voting for Dump were true, they'd have no one else to vote for, maybe Cruz if he gets to 8. Then they'd all be voted out of office when they got home. They're not going to break the rules their states set for them.
No one is stopping Dump from getting 1237. If he gets 1237 he is the nominee. If he can't do it then he's not guaranteed the nomination. If he can't get to 1237 then that means a majority of the voters don't want him as the nominee. That is why we vote in this country.
First of all, conspiracy theory? WTF are you talking about? Read the articles.
There are at least four potential ways to become a delegate, and they are:
1) Get elected on a primary ballot
2)
Get your state’s elected Republican leadership to choose you as a delegate
3) Receive a majority of votes at either a state Republican convention, or a convention in your local Congressional District
4) Become your state’s party Chair, or get elected either as one of its two other representatives to the Republican National Committee.
Secondly, you and your semantics relative to a "majority". Let's use the word "plurality" since that is more descriptive. Whomever has the most delegates based on the desires of those voting for a particular candidate should win the freaking nomination. Why is that so hard to understand?
A couple of the statements from the articles referenced here discussing the process of a brokered convention...
"Most delegates bound by their state's primary or caucus results are only committed on the first ballot. If subsequent ballots are needed, virtually all of the delegates can vote any way they want, said Gary Emineth, another unbound delegate from North Dakota."
"It could introduce Paul Ryan, Mitt Romney, or it could be the other candidates that have already been in the race and are now out of the race [such as] Mike Huckabee [or] Rick Santorum. All those people could eventually become candidates on the floor," Emineth said.
"Haugland said he sent a letter to each campaign alerting them to a rule change he's proposing, which would allow any candidate who earns at least one delegate during the nominating process to submit his or her name to be nominated at this summer's convention."
Emineth said he's worried that frustration would discourage Americans in the general election from voting Republican.
And you know all those delegates currently committed to candidates that have dropped out of the race, they are only committed for as long as their campaigns are "suspended". As soon as they they formally quit the process, those delegates are no longer committed and they can vote for whomever they want, regardless of who the former candidate wants.