"And Black voters over 45 have lived long enough to see the history made by Obama, but also have an even longer memory of the disappointment and shortcomings of candidates who failed. They’ve surveyed the polarized political landscape and bitterly divided Congress, and they doubt that a Sanders’-style political revolution is even a remote possibility in an age when just voting to fund the government is regularly up for debate. Many of them admired the grit and talent of Warren but had no faith that white men in any significant numbers would support a woman for president, even if she was the best choice. The entire black constituency is not unified behind Biden, however; there’s a significant generational split, with many younger voters backing Sanders. These younger voters grew up in the shadow of new possibilities presented by Obama’s victories. For them, the first election they participated in or can even recall was an election of phenomenal change, where a black candidate defied all expectations to win back-to-back terms as president. These are voters who know that hope has worked and believe it can work again, so they are open to Sanders’ critiques of the high costs of college and income inequality, and they agree there’s an urgent need for change."