Why throw good money after bad? Trump is going to get 1237 even if he were to lose IN. There is no reason for Cruz to stay in any more than Kasich. Or for that matter Rubio, Carson, Perry, Fiorina, Graham, etc. Trump has more delegates than all of the rest of the candidates combined.
Only ego keeps Cruz in the race. If he is really anti-GOPe, he should unify behind Trump, the only outsider left. That would take down the GOPe.
We will see when they show the cards in Indiana, then there is a game in California
I think there will be a game in Cleveland.