Who will drop out after losing in New Hampshire? Possibly no one. (On to South Carolina! This race is still wide open! We can win this thing!)
We'll consider the real reasons to stick around in a moment.
But for several candidates, whether they make it official or not, the Granite State will be the rock on which their ships ran aground.
Their campaigns may stagger on into a zombie phase, but it will not affect the outcome of further proceedings.