Deranged, paranoid, projectionism.
This is it exactly. They swear that WE are the dirty tricksters. Someone tell me, when was the last "dirty trick" the Republicans pulled? I am biased, I know, but all I can remember are things like the original "October Surprise", then the Bush DUI in 2000, and recently the FoleyGate scandal. The latter two were old news, held and then released specifically for maximum effect prior to the elections... When has "our side" done something dirty like that, or any dirty tricks?
This is a ham handed attempt at humor to hide the malicous attack machines of Mike Rogers and CREW.