It has become abundantly clear that Trump is going to end up on June 7 with anywhere from 40-100+ delegates shy of the 1237 majority. At convention, Trump will come up short on the first ballot, Ted Cruz will garner a majority on the second, and he will move over the majority number on the third to gain the nomination. Rubio stated in an interview this week on LevinTV that he was binding his delegates on the first ballot and then they would be free, or pledged to the only conservative in the race. If Rubio had wanted to release his delegates today, he would have formally endorsed Cruz. But he didn't.