How Domestic Migration Keeps Changing American Politics

The Democratic Flip of Georgia Points to a Future of Greater Conflict Within Southern States 

Population migration out of the South proved to be a major force for national political realignment in the 20th century. But as the recent Democratic breakthrough in Georgia seems to indicate, it is the movement of people into the region that now promises to redraw the political map.

Joe Biden won the state by running up huge totals in metropolitan counties that have been among the most popular destinations for African Americans migrating to Georgia in recent decades. Not long after that triumph, New York Times columnist Charles Blow, having himself …