Absent Biden, what democrat could win the presidency in 2024?

After the debate, some people have been suggesting Biden should not run again.
My question is, who do the dems have on tap who could win this year if Biden was out of the race…
I’m not asking who you all like best, or who would make the best president.
I want to know who has the best chance of winning, and why, if you care to elaborate.

(If this has already been discussed and I missed it, please forgive me. I don’t have a lot of time to spend on here these days.)

I don’t believe anyone Really knows.

That is probably why it is here, and not in Factual Questions.

I’m going to guess the mods are going to merge this thread pretty quickly with the other highly-similar one.

The polls say Harris. Slightly less chance that Biden, which is close to a 50%.

No one else has a chance.

Who polls next best after Harris?