Incumbent Democrat Susie Lee faces Republican Marty O'Donnell in Nevada's 3rd congressional district, a Las Vegas-area swing seat where recent general elections have produced margins under four points. Forecasters rate the contest Lean Democratic, reflecting Lee's multiple terms and local organization against a backdrop of the district's narrow Republican tilt in the 2024 presidential race. Early voting and ballot deadlines approach in late October, with both campaigns emphasizing economic concerns and turnout among suburban and working-class voters. The presence of an independent candidate adds modest uncertainty to the two-party split. A late surge in national Republican messaging or stronger Democratic mobilization in Clark County could widen the final margin, while any shift in voter enthusiasm on either side could compress it further.