Standard maneuver, the Libs have generals too.
They will slide in a political smear whenever they can, but as soon as anyone else tries it you will hear them piously say we all should work together and not point fingers.
Laugh at them, and point out their inconsistency.
They know they are operating from a position of weakness, and ridicule usually shuts them up the quickest.
Listening to Tony Snow. His introduction just stated he is going to discuss that Lyin' Landrieu and Mad Mayor of New Orleans. LOL