Will Black voters turn out for Joe Biden?

What’s happening: Joe Biden wouldn’t be the Democratic nominee for president without Black voters. His campaign appeared to be on life support after the first three primary states. His chances were revived by a decisive victory in South Carolina, where he won 60 percent of the Black vote. By the end of Super Tuesday, which featured several other states with large Black populations, he had all but sewed up the nomination.

Biden will once again need support from Black voters if he hopes to defeat President Trump in November,...