The State Supreme Court overturned the ban on same sex marriage saying it violates the state constitution. Of course the same thing has happened in other states and it doesn't always have a happy ending. In Hawaii, rather than allow same-sex marriage, they just changed the constitution. OTOH, in Massachusetts they didn't.
So there will be an amendment to the state constitution on the ballot in CA this November. Let's hope it - and the election - goes the way of freedom and fairness, as opposed to going to the Republicans and the homophobes.