Wesley Bell holds a clear lead in the Missouri 1st District Democratic primary as the incumbent who defeated Cori Bush in 2024, with traders assigning him a 68 percent probability based on superior fundraising and institutional support in the solidly Democratic St. Louis-area seat. Bell reported over $1.2 million in cash on hand as of March 2026 compared with Bush’s roughly $120,000, while Bush, who launched her rematch bid in October 2025, draws backing from progressive organizations. A February 2026 poll of likely Democratic voters showed the candidates statistically tied at 44 percent to 40 percent with 17 percent undecided ahead of the August 4 primary. The outcome hinges on turnout among core Democratic voters and any late shifts in outside spending or endorsements.