I think Rubio will be the bailer. He hasn't won anything at all yet. If the beltway insiders and MSM keep up the support for him, hopefully that will hurt him.
It didn't in SC, tough. He managed to take valuable votes away from Cruz because the "Tea Party" darlings supported the RINO instead! (Were they just following orders, or has the Tea Party been hijacked?)
Just keep watching. Cruz is done.