Key frame is that among urban blacks...Joe’s message/brand is not selling. Even if you dumped him for Newsom...I don’t think it would improve the numbers.
Add in migrant-frustration and the whole strategy dreamed up (probably 2 years ago)...lacked any coherent feeling for black communities to support.
actually the numbers are far worse for any other Democrat.
Joe only works because “just” enough elderly whites will vote for him because he represents how politics “used” to be, when candidates were more civilized or whatever their issue is.