Even career Democrats understand this. Here's life-long Democrat, former California Assembly Speaker, and former Mayor of San Francisco, Willie Brown (no relation) on the situation:
Jerry Brown won't challenge teachers
"No one knows the power of such unions in California better than Gov. Jerry Brown.
You'll notice that even as he's proposed draconian cuts to health and welfare programs and the state's universities, and asked taxpayers to pony up extra for several more years, Brown has been careful not to touch teachers.
"He knows good and well what the California Teachers Association can do for him - or against him - in an election."