They'll have to get rid of Kamala Harris first. Willie Brown might have some dirt. Problem is that if Harris is gone, it's 50-50 Senate. So a deal would have to be made. Joe Manchin becomes Vice President. Governor Jom Justice agrees to appoint a Democrat to replace Joe Manchin. Republicans in Congress vote to confirm Joe Manchin. Then they get rid of Biden easily. Manchin becomes President. This is what they would have done back in the old days. But the Democrats see Manchin's ideology to be too far "right" so this will never happen. So they'll rather go down with U.S.S. Biden in the meantime.
Substitute H. Clinton for Manchin and you have it pegged.