I think a democrat that alienates the left is more radicalizing than a cartoonishly evil republican. Trump has unified all flanks of the democratic party against him. Biden held that together a lot more than I expected by being friendly with Shawn Fain, the NLRB, and Lina Khan. If Copmala isn't going to make an effort to keep that going, the party will weaken like it did under Obamna, and the socialist movement will grow as the economy settles back into low and slow growth, stagnant wages, slow job creation, rising rents and healthcare costs, and booming asset and house prices. The right will get more radicalized too.