The real question I get to when I read your comment- is the left durable enough to fracture? The Democrats have always been great in one regard where Republicans aren't- they coalesce without question when told to.It seems that the people who think they may have a legit shot at national office in competitive future elections are breaking from extremism and feigning centrality. Joe Biden did it.
But at the same time, I think that a lot of people on the left are, like the rest of America, tired of the extreme left's bullshit over things like BLM, DEI, defund the police, etc., and are kind of breathing a sigh of relief that they can blame a return to sanity on Orange Man Bad and his evil supporters.
Republicans are notorious for multiple factions and bloody primaries and infighting (that's the most gracious I can be for all those morons). The Democrats, however, have very rarely had to deal with multiple factions of folks along the spectrum of party lines, probably the only notable exception is the Blue Dog Dems of a time gone by.
The polling all points to the majority of folks on the left desperately wanting them to go further left, which is completely disconnected with the rest of America. The squad, Hakeem Jeffries, Schiff, et al are HIGHLY resistant to anyone breaking ranks or even pretending that they would allow any politician to drift toward the middle- and the second they do, they attack their own vociferously.
Case in point- people are floating an AOC/Crockett ticket for '28. That's not a joke. I mean, it is a joke, but it's not fake.