Not against Trump. Not against DeSantis. Not against Haley.
Biden is losing the Black vote.
https://www.nbcnews.com/meet-the-press/meetthepressblog/eyes-2024-black-voters-sour-biden-rcna126124
Biden has lost the Hispanic & youth vote:
https://www.usatoday.com/story/news/politics/elections/2024/01/01/biden-trump-poll-odds-black-hispanic-young-voters/72072111007/
He is losing the Union vote.
https://www.newsweek.com/donald-trump-good-news-union-voters-1837089
His economic performance is losing the suburban Mom vote... the only hope Biden has in that regard is the GOP candidate's position on abortion. Haley will appeal more in this area than Trump or Desantis