the literally tens of polls of African American voters I have posted that all show them with a preference for Elizabeth Warren.
and i'll counter with literally tens of polls that show Harris in the lead, and i even found one that had Abrams on top. warren does come out on top more often than the others, but the point is: there isn't a clear-cut preference for Warren, and she certainly doesn't have runaway candidate-type enthusiasm behind her.
layer on top the horrible optics of yet another all-white ticket, and Warren is sunk IMHO. some black voters will be disappointed if she doesn't get the nod, but the consolation prize will be a woman of color.