I have said since the spring that Slow Joe will not be swapped out as the nominee for the same reason that his Veep search is so hard. The Democrats have no good choices.
The apparatchiks lined up behind Joe Biden just to hose Bernie--not because they loved Joe Biden. If they try to ditch Joe and pass over Bernie, the Bernie bros will mutiny.
On a tactical level, I would advise Joe to pick Amy Klobuchar--who is from a must-win state and at least can pass as sane. Elizabeth Warren is from Taxachusetts and is hated by Wall Street. And The Karen Vote is already largely going against The Donald anyway. Kamala Harris excited no one in the primaries and has baggage. And California is pretty much a lock for Biden already. Tulsi Gabbard would be an interesting choice--but she pissed off the Establishment and is from another state that Biden has a lock on.
Biden and Rice are the firewall to indictments. The DOJ won’t interview a dem pres or vote candidate much less indict them.
Amy would be a logical choice—except she has the wrong skin color to reverse Jim Crow Joe Biden who swore he would never be seen with a white person as a running mate.
He dug his hole—now he is stuck in it.
Probably Susan Rice, but if Biden really had a brain he wouldn’t have locked himself into a female pic. His best move would have been to pick someone like Colin Powell or another RINO. It would show a fake “unity in times of trouble” as well as pull votes from the dummies.