Thomas Chalifoux holds the leading position in the August 18, 2026 Republican primary for Florida’s 9th Congressional District, reflecting his prior primary victory in 2024, established name recognition across Osceola and Orange counties, and history of fundraising strength. Marcus Carter and the remaining challengers trail amid limited public polling or major endorsements reported to date. Recent candidate qualifying filings and modest early campaign announcements have not materially altered the field, though redistricting has shifted the district’s partisan balance. Traders appear to weigh Chalifoux’s incumbency-like advantages in a low-information primary against the potential for late momentum by lesser-known contenders before the August vote.