Incumbent Democrat Summer Lee faces Republican James Hayes in Pennsylvania’s 12th congressional district, a seat rated Solid Democratic by multiple forecasters ahead of the November 3, 2026 general election. Lee secured renomination easily in the May primary, while Hayes ran unopposed on the Republican side. The district’s partisan composition, recent voting patterns, and limited national attention have produced trader consensus around Democratic margins in the mid-20s to mid-30s. Low probabilities for a Republican victory reflect the absence of major scandals, polling shifts, or campaign events that would narrow the gap. Developments such as unexpected turnout changes, late endorsements, or broader midterm dynamics could still influence the final margin within the resolution window.