“There are issues on which, as Republicans and Democrats, we should sit down and work out our differences,” Castle said Monday night as we sat outside at Kelly’s Logan House, a watering hole where he has gathered his closest supporters the night before every election since his first victory, for the neighborhood’s state legislative seat, in 1966.

Republicans who might be inclined toward the middle of the road, he said, are petrified of “quick attacks by columnists and the Sean Hannitys of the world. People are very afraid of crossing the line and being called Republicans In Name Only—or worse.” As a result, “not too many members are willing to stand up.”

“Part of it,” he added, “is worry about primaries, and this election has shown the power of very conservative groups.”