The entire party system need thrown out the window.
If one party is that bad (they 100% are) it means we really don't have an option on what party we vote for.
And the "good" party has been running around for almost a decade telling people primaries are nonbinding so it doesn't matter if they influence it. Because if they wanted to, they could just cancel everyone's primary like they did to NH a few months ago and tell us who the nominee is.
And it would be 100% legal, there's nothing anyone can do to stop them.
One party is obviously worse, but only having one option isn't democracy.
And there is zero indication the "good" party will ever voluntarily give up their place as the only sane option.
The people have to do it without the help of either party. And if we keep blindly supporting one or the other party, shit will keep getting worse.