stop worrying.
I have run the numbers and it’s mathmatically impossible for Trump to lose as long as:
Trump stays above 20%
and no one else gets above 20%
that’s it. Nothing else is required. The winner take all states and the states with a 20% requirement to get a proportion of the delegates are more than enough alone to give Trump the nomination without a SINGLE insider vote needed for him at the convention.
How many of the 25 proportional states have a 20% threshold? And are you sure that you have current rules?
I’m not too worried, in that whatever makes things hard for Trump should make it nearly impossible for Bush and everyone trailing him, but I’m glad to hear that somebody has run the numbers. One question though, what if Cruz gets above 20% as well?