The Republican lean of Virginia’s 5th Congressional District, where Donald Trump carried the seat by double digits in 2024 and John McGuire won his first term by 15 points, anchors trader expectations for the November 3 general election. McGuire’s incumbency and primary victory position him as the clear favorite, even as a late-September Washington Post–Schar School poll showed him ahead of former Representative Tom Perriello by only six points among likely voters. Perriello’s stronger fundraising, DCCC Red to Blue designation, and name recognition have narrowed the contest relative to historical baselines and prompted closer scrutiny of turnout, yet the district’s structural advantages and McGuire’s organizational edge sustain the wide implied probability gap. Early voting is already underway.