Ted Cruz was in Casper Wyoming, today. He was making an effective and passionate case for a strategic move to secure friendly delegates to his cause of winning the party nomination.
Former 2nd Lady, Lynne Cheney, helped his cause in her introduction. Then Cruz gave his standard convention speech which ended with;
"If You want me to win the nomination, support this slate of delegates." - Ted Cruz
Cruz wisely knows that even though many delegates are bound on the first ballot, they are not bound in their votes on the Convention Rules and those rules may be more important than the rest of the convention business.
The delegates will also determine what the national platform looks like. Cruz would not want to have to run a general election campaign on a Trump platform. and John Kasich would not want to run on a Cruz platform.
Also of importance in the Credentials Committee. Any dispute of who are the proper delegation members, will be resolved by this committee's report.