Polls show that about 75% of Rubio’s voters go to Cruz, some sulk, and maybe 20% go to Trump. ALL the polling I have seen gives Cruz crushing leads over Trump head-to-head, in state after state.
That would mean this thing won’t be over for a while, even if Trump is way ahead in delegates after Tuesday.
If Cruz is slightly ahead in terms of national preference, with still 40% of the delegates left to be chosen and a lot of those being winner take all, then Cruz could at least take it to the convention