what the real danger is:
party regulars will infiltrate the Cruz & Trump delegations. People who are Trump first, Rubio 2nd choice will become Trump delegates.
People who are Cruz first, Rubio 2nd choice will become Cruz delegates.
at the multi-ballot convention, it will prove to be impossible for Cruz or Trump to gain a majority. Even if they work out a deal.
Not saying it is guaranteed, but it is a danger. I am not sure Cruz has the organizational resources to monitor delegate selection in all 50 states. And he cannot afford to purge the Rubio 2nd choice people from his ranks.
http://www.nytimes.com/interactive/2016/02/02/us/cruz-trump-rubio-nomination-paths.html
hard to find a path to victory for Rubio.
I guess Mich, ILL and Ohio in March could propel him. He will get delegates and a lot of 2nd place finishes.
He is staying in NH for the next 7 days. A bit surprising, but wants to assist on finishing off Kasich Bush and Christie. first post-IA poll in NH shows Rubio in 3rd at 12%. up 2 pts.