Incumbent Scott DesJarlais holds a clear lead in the August 6, 2026, TN-04 Republican primary, supported by substantial campaign fundraising exceeding $380,000 and a Trump endorsement that bolsters his position among primary voters. The district, redrawn in May 2026, remains strongly Republican with a partisan lean favoring the incumbent, who has won prior primaries by wide margins. Challengers including Tom Davis, Joshua James, and Harold "Rocky" Jones have declared but trail significantly in resources and name recognition. Trader consensus reflected in current odds aligns with these structural advantages for the sitting representative, though the short timeline to the primary leaves room for late shifts in voter turnout or additional endorsements.