The state's largest teachers union, which has been one of Gov. Arnold Schwarzenegger's most visible foes over the years, is the largest single financial backer of the Republican governor's budget-reform package on the May 19 special election ballot. Newly released campaign finance reports for the election show that backers of the six budget-related measures are raking in far more cash than the opposition, and the gap is widening. "We've got a lot of work ahead to educate voters about the importance of six complicated ballot measures, but we're confident we'll have the resources to do that job," said Julie Soderlund,...