Vote "No" on all six May 19th California ballot measures
Most progressive organizations I know of are coalescing around voting "No" on all six ballot measures in California's May 19th special election. The Bay Area Wellstone Democratic Renewal Club is one such organization. Calitics is another. The Unitarian Universalist Legislative Ministry is yet another (and their chart lists several other organizations also encouraging no votes, as well as some who are encouraging yes votes).
I really think we need to get rid of the 2/3 budget requirement and Prop 13. Until those things are done, California will be hostage to Republican extremists and basically ungovernable.