PAYBACK IS A BITCH:

Lieberman — who after losing an Aug. 8 Democratic primary to Ned Lamont has launched a third-party bid to hold onto his seat in the Nov. 7 general election — was asked whether he still endorses Diane Farrell, Joe Courtney and Chris Murphy, three Democrats looking to unseat endangered Republican incumbents Chris Shays, Rob Simmons and Nancy Johnson.

“I’m a non-combatant,” Lieberman declared. “I am not going to be involved in other campaigns. I think it’s better if I just focus on my own race.”

Why are the netroots surprised by this? You guys stuck a knife into him. Of course he’ll stick you back. And I suspect that this is only the beginning.