I'm honestly surprised by Carson's surge in the polls, because I don't really understand where his support base is coming from. I figured that Trump would have that section on lock, but his numbers are actually going up at the same time as Carson's are going up [latest poll has Trump at 30 and Carson at 18]. Carson is basically a Tea Party darling similar to those from 2012, though, so I expect him to crash in the next month or so once he starts to get some serious scrutiny/pushback. Looks like maybe his support is coming from the numbers that Jeb and Walker are shedding [latest poll has Jeb at 8 and Walker at an abysmal 3], so maybe he's being positioned as some kind of far-right anti-Trump or something.
And Kasich, Christie, Paul, Perry, Santorum, Jindal, and Pataki are done. Their numbers have tapered off to a rounding error.