From the Atlanta Journal Constitution:

Two rising Georgia Democratic stars could go from allies to rivals in 2022, depending on how Republicans redraw the new congressional map. That’s because no matter how the lines are drawn during a legislative session that starts next week, U.S. Reps. Carolyn Bourdeaux and Lucy McBath will be in the political crosshairs of the Republican majority.

The two Democrats are among the most vulnerable in the nation after each flipped Republican-held House seats in the past two election cycles, and now state lawmakers are certain to reshape at least one of their districts to add more conservative voters — and potentially cripple their reelection chances.

If the new map makes Bourdeaux’s seat safer for Democrats, there’s a solid chance that McBath or another Democrat could challenge her in the primary, a prospect that some Georgia partisans are quietly expecting….

Charles Bullock, a University of Georgia political scientist who wrote a book on redistricting, said the prospect reminded him of the scenario in 2001 when Democrats controlled the Georgia Legislature and forced a quartet of Republican U.S. House members to face each other in two races.

“It’s standard practice,” he said. “You enhance your side by taking out a player from another side.”