SAN FRANCISCO — Five months ago, state Senate President Pro Tem Don Perata had called November's infrastructure bond package "a textbook example of bipartisan cooperation." Perata, D-Oakland, and Assembly Speaker Fabian Nunez, D-Los Angeles, stood shoulder-to-shoulder with Gov. Arnold Schwarzenegger that day on the Oakland International Airport tarmac. Perata said lawmakers "weren't sent to Sacramento to be stalking horses for anybody running for office," and Nunez said, "Don't underestimate the role that the governor played." But the governor's name barely was mentioned Friday as prominent Democrats, union members and others rallied for the bond package at Pier 30, just south...