The senator from Missouri is a jerk.

McCaskill was stepping out of her chair at the end of an MSNBC interview, and Romney was up next. She and a staffer unplugged her various wires, and she handed Romney the earpiece the guests use to hear the host.

"I spit on this before I put it in," she said to Romney, with a sweet smile.

UPDATE: Romney spokesman Eric Fehrnstrom emails: "You should have seen what she did to the chair."

What's not surprising is that many of the comments approve of this sort of "discourse."

And, just for the record. I applaud the brave souls who are willing to put GOP bumperstickers on their automobiles. Here's the reason I don't.