@SleepySteve
Harris has too much baggage with her to be a good contender
Newsom is better with greater name recognition, but democrat governor of California will very much inflame the Republican base
Other than Newsom, I think the most likely candidates will be Jon Ossoff, Pete Buttigieg and Gretchen Whitmer
I think Ossoff would be the most likely to win the general election out of all of them just based on that he just doesn’t have as much baggage as the rest of them. Beyond Pete and Whitmer being targeted by conservative pundits, they are also gay and a woman respectively. While Ossoff is a Jew, he isn’t as visible with his identity as the others and anti-semitism isn’t as visible in American society as misogyny or homophobia(although in the event of his nomination, I do not doubt the level of anti-semitism will rise dramatically)
Also, Ossoff would function well as a bridge candidate between the progressive democrats and establishment democrats, so that’s another point going for him