Incumbent Republican Scott DesJarlais and Democratic challenger Victoria Broderick remain the leading contenders in Tennessee’s 4th congressional district, where mid-decade redistricting added portions of Nashville and reduced the seat’s prior Republican tilt. Traders assign roughly equal weight to the top two candidates amid limited public polling, with the strongest implied probabilities clustered on a Republican margin between 20 and 30 points. DesJarlais’s substantial fundraising edge and primary performance reinforce expectations of a comfortable victory, yet the district’s updated partisan lean and potential shifts in turnout keep the exact margin range contested. Upcoming campaign events or national political developments before November 3 could widen or narrow the spread within the favored bands.