McConnell's mortal enemy might soon be in his caucus

“I do not,” said Senate Majority Whip John Cornyn (R-Texas), when asked whether he thought Moore would be a productive member of the Republican caucus. “Look at his track record.”

Added a Republican senator who requested anonymity: “It’s highly likely that he could be disruptive. We’re talking about somebody who has been removed from the bench twice.”

Moore promises to make McConnell’s life miserable if he makes it to the Senate. Already the majority leader is subject to the whims of members at the ideological poles of the conference, senators like Rand Paul and Ted Cruz on the right and Susan Collins and Lisa Murkowski on the left. Moore might make those senators seem like loyal foot soldiers.