He lost Colorado fair and square. Maybe some of those “best people” who he would have working for him shouldn’t have screwed up quite so badly and he would have received delegates.
----- Change the rules to require 1499 delegates, not 1237 delegates. ----
Let's say Trump wins 1237 delegates. That makes him the "Presumptive Nominee." It doesn't make him the CERTAIN Nominee, which only happens after they vote at the convention....
After June 7, the #NeverTrump crowd will know how many delegates Cruz has earned (let's say 1000), and how many Trump delegates are actually Cruz-loyal Trojan Horses (let's say 500). That means they have 1500 Cruz-loyal delegates, and 500 of those are bound to vote for Trump on the first Nominee ballot.
It takes a majority (1237) to adopt or change the rules of the convention. However, these delegates are NOT required to vote on the rules in a way that is LOYAL to the candidate they are bound to. Therefore, the 500 Trump-bound delegates who are Cruz Trojan Horses can vote to change the 1237-rule to become a 1499-rule because they know Cruz has 1500 votes on the second ballot. So they take the first vote, and it goes 1237 Trump, 1000 Cruz, etc... Trump doesn't make the 1499 threshold, so they go to a second ballot. On the second ballot, the vote becomes 1500 Cruz, 737 Trump, and Cruz becomes the nominee.
Right now, the RNC must be wishing that it had a big block of Superdelegates like the Democrats have. That would make stealing the nomination from the voters so much easier.
Bernie is behind by only about 200 pledged delegates, but Hillary's actual lead is over 700 thanks to superdelegates. If Bernie were ahead by 200 in pledged delegates, it wouldn't matter because the superdelegates would make up the difference and give Hillary the nomination. I'm sure that at this convention, the RNC will decide to create a big block of superdelegates to make sure that if another Trump comes along in a future election, there will be absolutely no chance that any future non-establishment candidate has a shot at the nomination.