Donna Miller secured the Democratic nomination for Illinois’ 2nd Congressional District in a March 2026 primary victory over a crowded field that included Jesse Jackson Jr., positioning her as the clear favorite in this open-seat race following Robin Kelly’s departure. The district’s strong Democratic lean, demonstrated by Kamala Harris’s 27.5-point margin in 2024 and consistent Solid Democratic ratings from forecasters, underpins the 95.9% trader consensus for Miller against Republican Michael Noack. Noack, a first-time candidate and truck driver, faces structural barriers in a Cook County-dominated constituency stretching into rural southern areas. Late-breaking events such as major scandals, health issues, or unusually low turnout could theoretically narrow the gap, though the projected 39-point margin and absence of competitive Republican infrastructure make such shifts improbable before the November 3 general election.