I don't think anyone on either side really thinks this is a problem. Look at Utah for a counter example, 75% of delegates with 60% of the congressional vote. N

I don't think anyone on either side really thinks this is a problem. Look at Utah for a counter example, 75% of delegates with 60% of the congressional vote. No one on the left is complaining about Utah. When elections are winner take all, big majorities result in oversized representation. And there are still ways for minority party voters to exert influence in these states. For example, they can vote for the more moderate candidate in the other parties primary. The problem is when a state is voting closer to 50-50 like Wisconsin. The Republicans hold a near super majority in the state legislature despite receiving fewer total votes. And because the legislature controls redistricting, Republicans can essentially maintain permanent control of the legislature. That is not healthy for Democracy. But if you really wanted to fix the CA delegation representation, I would fully support moving to a system where the congressional delegation is determined by statewide popular vote. But that introduces a whole set of issues. For example that means folks would vote for the party instead of candidate, which means we could see further entrenchment of party insiders. The flip side is it would probably make it easier for third parties to get representation in congress. I think this generally would be a hard sell in the US though. I think both core left and core right are too distrustful of their respective party bosses to trust the selection process, and we are a very diverse country, geographically and culturally. So having local representation is meaningful (for example, neither AOC or Taylor Greene would survive a process like this, but both of them have very passionate followers that deserve some representation in congress).