What I favor: Biden should make a statement in the East Room with Harris. He should say "I'm withdrawing from the race because I'm not certain I can serve a full 4 year term. I'm endorsing Harris and telling all my delegates to vote for her. She will continue my administration's policies."
I think there are no guarantees of success or failure with any strategy, including Biden staying in the race. Anyone who tells you they have a strategy they know for certain will work is wrong. But this is my best guess for what is best for the country.
I wish I shared your optimism about Harris, but I doubt that a woman, much less a non-white woman, can win against Trump. I'm curious about what data guides your intuition in the opposite direction
I’m not optimistic. The time for open primaries has passed, and a contested convention would be a disaster. The only possible non-Biden choice is his VP who happens to be Harris. All other options (e.g., Newsom, Whitmer) are simply not viable.