I'm not a Democrat or Republican but even if I were all the candidates in both parties are fucking terrible tbh. Maybe Nader will run again.
I am ridin' with Biden still, if not Biden then I would happily start ridin' with Newsom who almost certainly would be the nominee and is positioning himself well for a run in 2028. Pretty much any of the prominent Democrats aside from RFK Jr. Just look at the policies each of the candidates support and you'll see the Dems largely support policies that want to help people, and the Republicans largely support policies that want to hurt people. Vote to help, not hurt.