Cracks in Biden’s ‘firewall’? Black voters split in S. Carolina.

In recent primaries, black South Carolinians swung heavily for the eventual nominee. This time around, though, it’s apparent that the largest racial group in the state’s Democratic electorate is hardly a monolithic voting bloc.

Sitting on a cluster of chairs next to an abandoned softball field, Deacon James Morrison and his after-church buddies are busy sorting out the next president of the United States.

The group of mostly older African American men, who get together every Sunday in a kind of makeshift social club, are united in their view that...