“Southern White Democrats Face End of Era in Congress”

The only remaining white Democrat in the House of Representatives
from the Deep South, Rep. John Barrow, is in jeopardy of losing his job
in November, which would mark a monumental shift in American politics. 
In an stark realignment, voters in the Deep South have divided into an
increasingly black Democratic Party and a mostly white Republican Party.
Already, Mississippi, Alabama and Louisiana are represented in the
House solely by white Republicans and black Democrats. Georgia could
join that list if Mr. Barrow, who is running in a district redrawn to
include more whites and Republicans, loses in November.

Wall Street Journal

“Southern White Democrats Face End of Era in Congress”

The only remaining white Democrat in the House of Representatives
from the Deep South, Rep. John Barrow, is in jeopardy of losing his job
in November, which would mark a monumental shift in American politics. 
In an stark realignment, voters in the Deep South have divided into an
increasingly black Democratic Party and a mostly white Republican Party.
Already, Mississippi, Alabama and Louisiana are represented in the
House solely by white Republicans and black Democrats. Georgia could
join that list if Mr. Barrow, who is running in a district redrawn to
include more whites and Republicans, loses in November.

Wall Street Journal