I think his spokesman has been on TV today opposing the idea of a rigged convention.
All he has to do is say something to this effect:
"I think I'm the better man for the job than Trump. But I also respect the will of the voter. I want to put an end to this speculation that is destroying our party. If I do not enter the convention with the most delegates, I will urge my delegates to support the leading candidate on the second ballot."
I think a move like that could put him in real contention for the nomination outright, which he's not going to get otherwise.
The rest are in running for VP slot at this time. Cruz will back Trump at the convention.
Agree. It would be the smart thing to do and would probably separate him further from the pack.