Why? Start with the structure of the 2020 race. It's not going to be an identity-politics or ideological election. Af-Ams, e.g., have shown they want Trump out and will go with the candidate(s) who can accomplish that. Same is true of the rest of the Dem base. 2/13— Jonathan Rauch (@jon_rauch) April 21, 2020
These voters (like everyone) know that Biden's age make his VP likely to succeed him. They want a VP who they can envision as commander-in-chief and who is a safe pair of hands. Someone they can easily imagine as president. 4/13— Jonathan Rauch (@jon_rauch) April 21, 2020
After serving as Arizona governor, Napolitano was tapped to be President Obama’s Secretary of Homeland Security.
So the list is getting short. But...Napolitano! 6/13— Jonathan Rauch (@jon_rauch) April 21, 2020