And 84% voted for someone other than Kasich, 89% for someone other than Bush, 90% for someone other than Rubio, etc., etc.
Your point being?
There's 45% plus of "establishment" votes being divided among four "establishment" candidates. As that field dwindles, whoever is still standing will pick up some serious support.
Cruz can't expect to run against the"establishment" and get the residual "establishment" vote as "establishment" candidates fall out, so "establishment" votes won't go there, and the "establishment" doesn't want Trump, so they're not going there either.
The "establishment" candidates are playing a long game.