CA is Deep Blue, overrun by liberals in SF and LA.
The rural counties on the desert side go GOP but they have no effect on the outcome.
CA has been a solid Democratic state since 1992.
Those pro-Democratic metropolitan areas are the reason we need Electoral College votes by Congressional District. The cities can come in with blowout numbers but it would only take that particular district. The conservative rural area would count for something, while under the current winner-take-all system, they have no voice.
I live near Nevada and see Las Vegas voting rule the whole state, and that's the norm for the others.
The stupid Governor of Pennsylvania vetoed that plan, for reasons that escape me.