Yeah, I saw that leak about Joe Biden. Also, certain members of the press mentioned that all of the other candidates stayed after the debate to answer questions from various media/press but Joe left rather quickly, saying that he was tired.
One woman on Twitter stated that her Aunties were excited about Harris and would rather vote for her but don't trust that white people will vote for her and so, think Biden is the safe choice. I think that's very sad. It's also what many black people were saying about Obama early in the primaries. I remember watching The View (yes, I used to watch that show) and Sheri Shephard said she was voting for Hillary Clinton in the primary, because she felt she knew Hillary better since Hillary had been the Senator from New York, but more importantly, she doubted Obama could win in a general election. She wasn't alone. That time reminded me of this situation with Harris and Biden.
After the first round, it just seems clear that Harris, Warren and Castro delivered the strongest debate performances. It's a shame that they are still being judged as somehow being less than electable than the guys who clearly had lesser presentations by criteria that is loopier than Williamson's debate answers.