Rubio hasn’t won a state primary except for the caucus in Mini-so-cold and he will lose his own state to Trump and Cruz.
If Cruz drops out he will either endorse Trump or stay mum.
He is unlikely to drop out as he is well funded and actually has a path to the nomination.
Neither Kasich or Rubio have a legitimate path and are in it to thwart Trump AND Cruz from getting the nomination. If both of them dropped out it would be a competitive race between Trump and Cruz and Cruz has a very good chance to secure the nomination.
The GOPe would rather have a brokered convention and put up with Hillary as POTUS than to allow an outsider candidate to win in November.
Especially if there is a brokered convention on the Democratic side, which I think is much more likely, the GOPe really will feel they have nothing to lose.
Without Cruz winning Florida which he won’t, he’ll need about 70% of the remaining delegates to get the nomination. Won’t happen. Its brokered convention or nothing after the 15th.
Cruz does not have a path to the nomination, unless he can somehow take NE states, and WEST states which isn’t going to happen.
Anyone in the race besides Trump is staying in because they are all hoping for a brokered convention where the election will be stolen from Trump.
No, I don’t think Americans will do anything, much less revolt.