"Straight male seeks Bush supporter for fair, physical fight," reads a recent posting on Craigslist.org, the popular nationwide bulletin board. "I would like to fight a Bush supporter to vent my anger." A joke? No, says Paul Valerio, 34, a graphic designer from Oakland, Calif., who told us yesterday that he's ready to rumble but hasn't gotten any takers yet. "I'm 6-foot-1 and 236 pounds. I think that's a heavyweight category," he said, then warned all comers: "I can hold my own." Guess all we need now to settle this is a willing red-stater and some airfare."