Progressives scored a big win on Wednesday night. SF Board of Supes Prez Aaron "Payback's a Bitch" Peskin was elected to head the San Francisco Democratic County Central Committee last night, inching out former chair Scott Wiener and giving "a boost to progressive candidates for supervisor in the November election." Peskin, according to SFBG, won on an 18-16 vote. The real vote, because political committees inexplicably love several rounds of voting on anything, will happen......