You can't destroy a democratic system that isn't democratic and already doesn't serve the people. The Senate was never designed to be democratic in the first place. The House was, but its main problem is just campaign finance decadence that means to the extent those guys do any governing during their 2-year terms, it's a part-time gig in between fundraising. And together, the legislative branch has become a joke. They now just fart around, either rubber-stamping whatever the President says, or shutting down the government whenever the party out of power can't accept that the public has rejected their policies. So I hope I can be forgiven for being pessimistic about whether this "democratic system" even serves any purpose at this point.
But back to the Senate. Jon Tester was defeated in 2024. There is a peppering of Democrats in statewide office here and there -- Fetterman and Beshear, and the Virginia and Georgia Democrats, the latter of which got really lucky to both run in the election that was a referendum on Trump's COVID chaos, and the one getting to run against a proud child molester. They are also the exact kind of politicians that don't get support from the blue-state Democrats in primaries for national elections, because they are too moderate. If you don't check every box, the primaries will destroy you. To be fair, Republicans have the exact same problem. Blue-state moderates certainly could have been persuaded to support say, Jeb Bush, but the party only supports... well, since the phenomenon became locked in, they have only given their support to one man. Sorry to ramble, my point is that the practice of split-ticket voting is dying off faster than discounted DRAM.
There used to be a lot of these cross-party appeal people like Bill Clinton, Ann Richards, Jon Tester, Evan Bayh, Ben Nelson, and on the Republican side George Pataki, Mitt Romney, Chris Christie. But this is now massively the exception, and trending down.
BTW I'm all for getting rid of gerrymandering, but the Democrats have set that cause back by 100 years by selling out their supposed deeply held beliefs last year in California. Now we're just being honest that it's only about power.
I don't remember who's running for governor in California, but I am guessing there is only one Dem running it's because the California Democratic Party is powerful and disciplined in ways neither national party is, and has told everybody but the party's favorite to sit down and shut up. That's speculation - let me know if I'm wrong.