Here is my wild idea...Harris to resign..Biden submits Newsom for his VP....either Biden stays on until 2024 and Newsom as VP takes the nomination for POTUS in 2024
Or
Once Newsom is VP...Biden resigns and Newsom becomes POTUS
I have too much time on my hands to dream these scenarios up...
It actually reads like the 'trail of succession' to Nixon:
Agnew out, Ford in, Nixon resigns.
Rockefeller in as veep, only Ford didn't resign, and Rockefeller died (I heard three different stories on the radio in less than 30 minutes, each seemingly more sanitized than the one before it.) i believe the plan was to have Rockefeller as POTUS.