My guess.
Christie won’t drop out yet.
The GopE will bank roll Christie for a few weeks so he can be their Trump/Cruz attack dog for at least 1 maybe 2 more debates.
Brit Hume said last night Christie doesn’t qualify for the next debate.
Also, Dana Pe-RINO was chewing Christie out for hurting Rubio in the debate only to have the effect of helping Trump. She probably speaks for a lot of RINOs who also resent Christie going after Rubio. I think his donors will be jumping ship. If he’s this weak in the northeast, where else is he going to perform?