Great question. I'll answer you question with a question (I hate that, but if fits) how do those same questions apply to the state of Texas? Is that state liberal?
What is causing Texas to have so many Demo seats (and why they are fighting in unprecidented ways)is the same thing that is causing CA to have Demos. Why do we dislike government? Once you get things institutionalized, its hard to get them out.
OK, the one word answer; Redistricting.
Incedentally, we are up for redistricting in 2010 FYI. If, or should I say when(R)nold fails to implement draconian cuts in spending and taxes and have a hiring freeze of state employees-basically when he doesn't follow the one single model to get us out of debt; Reaganomics, we will have the GOP blamed for everything Gray gave us and lose the governorship in '06, which is precisely why you see all these "news" stories about how "the Republicans" must rally behind (R)nold, yet they never quote McClintock as to who is supposedly calling him. They know McClintock has what it takes, and he is last one they want to face, so they call him "irrelevant" just like Pete Wilson did when he stood up to his tax increases that turned a $3billion deficit into an at the time largest deficit ever $14 billion. We have but one choice, Tom wins, or (R)nold or Cruz wins and we all lose.