Michelle Goldberg profiles them:
[D]espite the best efforts of the Republican establishment, many on the religious right are far from ready to accept Romney’s inevitability, or to coalesce behind him. They remain distrustful of his record on abortion, and unsure they can believe his campaign promises. And the harder party elites push Romney on them, the more alienated they become. "The biggest story that everyone in the media has missed this cycle is how frustrated and fed up the Republican Party base is with the Republican Party," says Deace. "It’s unlike anything I’ve ever seen."
Jonathan Tobin sees the resistance finally giving up in Pennsylvania. YouGov points out that GOP voters are relatively unenthusiastic about Romney:
[O]nly 11% of GOP voters in this week’s Economist/YouGov Poll would be excited if Romney became the party’s nominee.
The Dish 