Greg Stanton’s position as the Democratic incumbent in Arizona’s 4th Congressional District, rated Solid Democratic by nonpartisan analysts, underpins the 96% market probability, reinforced by his 2024 reelection margin and primary victory over a progressive challenger. The district carries a D+4 Partisan Voter Index, and Stanton has raised over $2.1 million compared with Republican Zuhdi Jasser’s $565,000. Recent October debates highlighted differences on economic policy, health care costs, and tariffs, yet early voting has already begun ahead of the November 3 general election. A late scandal, significant health event, or unusually strong national Republican surge could narrow the gap, though current fundraising, institutional support, and historical performance indicate limited pathways for an upset.