Tennessee voters oust Trump-backed congressman, set fall matchup for redrawn Memphis ... - PBS

Theory Briefing

• A Trump-backed congressman lost his primary in Tennessee, a rare rebuke of a presidential endorsement in a Republican race.
• The Memphis district was redrawn before the vote, making it hard to separate the map's influence from voter dissatisfaction with the incumbent.
• The result sets a fall matchup in a redrawn district, meaning the general election will test which party benefits from the new boundaries.
• Redistricting and a high-profile endorsement loss in the same race creates a natural experiment in what actually drives House primary outcomes.