I do not see it that way. Because almost all remaining primaries are winner takes all. Kasich & Rubio & Cruz will divide the voters between themselves, and Trump will win most of those. Also there are no more caucus states remaining AFAIK.
Actually they should put all their marbles in the Cruz bag and tell Rubio/Kasich to get out of the way. Cruz could win head to head against Trump. Thank God for stupid opponents.
The GOPE really is as stupid as we always thought it was.
People need to get on their phone and start letting their State GOP offices know going against the will of the voters at the Convention is a good way to lose everything.