I asked on reddit and they said people had to move from California to Wisconsin. Really. (Also this is the revised post with the correct state assembly result)
Burn it all to the ground. The American political system is irredeemable and we can truly not move forward as a people until a new system replaces the old.
Literally the only thing you can do is continue voting. Please, do not, under any circumstances, consider other options.
If you actually want a reformist answer a single transferable vote proportional representation with districts drawn up by some sort of independent body with their information and process made publicly available so people can demand a redraw.
Is that possible in the US? I highly doubt it without any serious change in culture and ideology.
Well if you want to prevent this it is.
You'd also have HSR from Madison to Milwaukee.
Several other states have attempted that with ballot initiatives, Michigan and Missouri come to mind. But this requires a legislature that is responsive to the publics will. And its a bit of a moot point in Wisconsin anyway as it is one of 26 states without ballot initiatives. In Missouri they're straight up ignoring it (and a ballot legalising Weed too iirc). In Michigan they tried very hard to remove it from the ballot, then invalidate the result, and when neither worked they passed a law making it harder to bring ballot initiatives harder in the future and last I checked they were trying to stack the independent commission. And as for taking it to court well look at North Carolina that has been back and forth to the Supreme Court for years now trying to delay the court order to redraw its districts.
Move to a different country? Like seriously I have no idea how to fix anything in America, its all so tied into everything else, and every piece of it seems to be fucked up in some way.
If you just want to fix gerrymandering, the fanciest bestest way to do it is mixed member proportional, which they use in New Zealand. Here's a cartoon explaining it.
But the likely outputs of a system represent the interests of the current balance of powers (otherwise it'd already be changed). A shift to a new system with a new likely set of outputs requires a shift in power that corresponds to the change in likely outputs. Where you get that change in power must come from outside of the system.