If California seceded like they were threatening to do, the federal govt would become solidly Republican. It's questionable if that would result in a truly conservative govt but there is no question that CA is dragging us down.
If we could keep Washington and Oregon --- for strategic reasons only (Pacific Coast access) --- it would almost be worth losing the naval bases, to get rid of the state. Losing the San Joaquin Valley would be a kick in the head, but we might be able to work out a deal to purchase their produce --- they have to sell it to
someone, they couldn't eat it all themselves --- but even if not, we could move on to Plan B, and perhaps not be able to get all of the fruits and vegetables we're used to, but again, it would almost be worth it. Find a way to "make the deserts bloom" like the Israelis did? Human ingenuity knows few if any limits.