Lauren Boebert secured the Republican nomination unopposed in Colorado’s 4th Congressional District primary on June 30, 2026, and remains the incumbent candidate in a seat rated solid or likely Republican ahead of the November 3 general election. A September 17 ethics complaint alleging improper relationships with staffers, which she and one named aide have denied as false and politically motivated, has not triggered party pressure or withdrawal signals. Traders assign 95.3% probability she stays in the race because primary filing deadlines have passed, she maintains active campaign operations, and historical precedent shows incumbents rarely exit under similar late-cycle scrutiny absent overwhelming institutional opposition. Scenarios that could still shift odds include escalation of the ethics process into formal investigation with new evidence, health developments, or direct Republican leadership intervention before ballots mail.