California is trending "blue", not "red". Like Austin, we're taking in mass refugees from other countries and other parts of the country, looking for a place where they can live their life freely yet still turn a decent salary.
Not to mention that despite the focus on illegal immigrants committing crimes many immigrants know the American constitution better than some natural-born citizens and end up taking the oath. It doesn't guarantee they'd vote democrat but Fox headlines like THEY RAPE, KILL, DRUG & HUMAN TRAFFIC OUR AMERICAN DREAMS AWAY!! is a push.