I think Rubio rising now is very bad news for Trump. If Trump doesn't outright win New Hampshire then he's finished. That being said Bush, Kasich and Christie aren't going to drop out until after N.H., I would imagine most of Carson's support goes to Cruz and Fiorina doesn't matter as she has almost no support anyway.
and you can count on at least one of those candidates - bush, kasich, and christie - staying in the race.
sadly for us we got the wrong bush brother and i think that soured the name permanently. so i don't think jeb has a real shot. my honest guess is that either christie or kasich becomes the nominee.
bit of a long shot i know. it's still my guess though.
I don't think Christie has a shot at all, his home state hates him, he has the same personality as Trump but less likable and let's face it, he's too fat, people don't like that.
Kasich, he performs poorly in N.H. and he's fucked.
Rubio will have money and can weather primary losses, he's your only hope.