… If Mr. Biden, 76, is going to win the Democratic nomination, it is likely to be because of the support of older black voters, a key constituency for the party and one that polls show is overwhelmingly supportive of the former vice president’s candidacy.
But if he is to be overtaken by one of his more progressive rivals, the most powerful tool against him may not be opposition research or negative advertisements. Instead, it may be an organic effort by younger black voters — concerned about Mr. Biden’s age and more moderate ideology — to sway their older family members. CONT.
Astead W. Herndon, New York Times