A dilemma for Biden and Dems, as this election is once again all-important (essentially Zelensky vs Putin) and half a chance if Biden wins he croaks or goes batty mid-term. I'd say sacrifice Harris at the altar of election winning and succession (at this point, too bad Michelle Obama isn't available). Val Demmings, Susan Rice, Karen Bass all good choices but lack Harris' CA fund raising and name recognition, a switch also an admission of failure that Repubs will exploit. At the risk of losing female votes, why not Obama-esque Hakeem Jeffries? He seems to be presidential timber and high profile, from a State/region with plenty of Dem $$$. I guess if you wanna throw the lefties a bone/get them to not run their own candidate pick Cory Booker? If you want Southern swing-state/female votes Demmings?
FDR switched VP horses, why can't Biden?