Someone challenges her from the left, but it's more of a Bill Bradleyesque than Sanderseaque in nature, and thus goes nowhere.
Maybe, but everyone said early 2015 that Bernie Sanders was just another Bill Brandley.
Yet Bernie started a movment that now dominants the party and agenda.
Plus Hillary ended up weak in the general election losing to Trump
In theory lots of Democrats should have stayed out in 2020. Biden led all the polls and had stronger general election polls. Yet every Democrat in the party (and their grandmother) ran in 2020. Who wants to miss the chance to be the next Bernie Sanders?
So I expect Harris a serious challenge