I'm not sure about the latest purge being 100% counter-Bushbots....during the election runup that was the case to be sure....we also had some folks zotted for opposing the Iraq war even before the election runup.
and of course we have DUmmies zotted frequently
just my opinion.
To be honest, I'm only aware of the flood of naysayers onto FR during the run-up of the 2004 campaign, not what recently has been going on. I'm on FR every day, so if there's been any purge in recent days, it's been pretty narrow and selective, but probably deserved.