I don't think the CPAC straw poll means too much, especially this far out from 2016. I think Rand Paul is the flavor of the month thanks to his filibuster - which was wonderful! - and has learned from his father how to play the straw poll game.
I am not a Santorum fan and don't see him going very far, should he try to run again. Rubio is a star though I don't know if he'll be ready in 2016. Same with Ted Cruz. I'm disappointed Susanna Martinez doesn't get more attention - she wasn't at CPAC, and the same goes for Mary Fallin and Nikki Haley. WHERE ARE THE WOMEN?
And, as for Palin, she's fading fast. I appreciate what she did in bringing in new people in 2008 but now she criticizes Obama for using a teleprompter as she reads from one herself. And, blaming consultants for losses - have you seen what she charges for appearances? Pot/kettle.