So Rule 40 really shows how the Stop Trump movement is not helped by Kasich staying in the race. All of Kasich’s delegates would be unbound on the first vote, leaving them open to being picked up by Trump. Cruz is the one who has to win the delegates to truly take them all away from Trump on the first ballot.
I really don't have a good handle on the how Gov.Kasich staying or leaving would help stop Mr. Trump. As for Senator Cruse, I still think he has a first ballot strategy. He has been working at this for at least two years and while he may not have the most vocal fan base on this forum, he understands the rules and has many supporters at the local party activist level which is the place where delegates come from. If his first ballot strategy doesn't work, his prospects on a second ballot are very good. Mr. Trump is almost faced with a first ballot only situation.