And it is worth remembering that under our current system we will always have two parties. If one party dies another rises immediately to replace it, or the dominate one splits. I could easily see the Democrats splitting into two parties, the Democratic Party with the likes of Pelosi and Schumer and the Progressive Party with the likes of AOC and Warren.
I honestly think it is more likely the Republicans will split. The truth is that the current members of the Republican Party has so little in common with each other that they can hardly be considered a solid caucus at all. We can see it in how little that they can get accomplished even when in complete control. All they can really agree on is that they hate the Democrats, other than that they are like three different parties under one banner.
I agree with the first paragraph but not the second. The Republican party is already dead. Nothing it used to stand for exists now. Once they lose their hold and their corrupt election practices cease working, they will be gone for good.
I thought maybe the Republicans would split too but with qn, almost complete, lack of voices from the right speaking out I now don't see a split happening. What I have seen is some Republicans becoming former Republicans and either going the independent route or actually switching to the Democrat party.
I never thought about it but I think you might be right about the Democrats splitting. It would make sense as the moderate Republicans are more likely to be attracted to the moderate Democrats while the progressive wing demands more progress and change.