Democrat Janelle Stelson defeated incumbent Republican Scott Perry in Pennsylvania’s 10th congressional district on November 3, 2026, securing roughly 55% of the vote to Perry’s 45% for a 10.1-point margin. This outcome flipped the seat and aligned closely with the leading trader consensus around a 9-12 point Democratic victory. The rematch followed Perry’s narrow 2024 win, with pre-election polling averages near even before shifting toward Stelson after the Cook Political Report moved the race to lean Democratic in October. National attention focused on the district’s role in broader House control efforts, supported by Democratic fundraising and endorsements including from Governor Josh Shapiro. Perry conceded the following morning, and full certification remains pending though the margin exceeds typical recount thresholds.