I had to leave some commentary on this topic- we're headed to a brokered convention, folks. Given the current delegate math, I do not think Trump will be able to attain a majority of delegates to win outright. Ted Cruz will not be able to catch up unless Donald Trump quits the race or completely falls apart (not going to happen).
So! We're headed to a contested convention. Here are a few thoughts on the matter.
1. Rules are Rules. If Donald Trump doesn't meet the quota, it will not be the result of backstabbing, but the consequence of his campaign's lack of ability to convince a majority of Republican voters he is the man for the job.
2. That is, unless the GOP changes the rules in order to bring one of their pets out. That is would undermine the legitimacy of the process and a factor that makes our party separate and distinct from the Democratic system of "super delegates."
3. If the rumored rule changes do not take place, Cruz would be favored to win the nomination at convention. He has a clear advantage with the activist base.
4. That isn't to say Trump couldn't win. Those wringing their hands over "party insiders" choosing the nominee must understand that many of these delegates are elected/appointed by their local GOP units. State parties and the RNC hate trump, but a decent portion of delegates are from outside that system. These people are more likely to favor Cruz, however.
5. Overall, a contested convention is a bad thing in regards to the general and the overall future of the GOP. While Trump will likely fail in reaching the required number of delegates, he has maintained a strong plurality, largely new to the political process. Alienating them would be a bad idea for the GOP, but then the GOP should have saw the Trump voter coming down the line ten years ago. They are now paying for their inflexibility and lack of follow-through.
6. There is also the chance that a contested convention will be seen as a predictably messy end to a brutal cycle. Regardless of a Trump nomination or a contested convention, Hillary is the real enemy and she is poised to put the final nail in the coffin of a great nation.