Catalina Lauf leads the Republican primary for Florida’s 19th Congressional District with 44.5% implied probability, ahead of local businessman Jim Schwartzel at 13.6% and former North Carolina Representative Madison Cawthorn at 10.8%. The open seat, created after incumbent Byron Donalds entered the gubernatorial race, has drawn a crowded field of self-funding executives, out-of-state transplants, and state legislators ahead of the August 18, 2026 primary. Lauf benefits from early filing, an endorsement by U.S. Representative Anna Paulina Luna, and a Trump administration background that aligns with national conservative networks. Schwartzel’s strong fundraising and local business ties support his position, while Cawthorn’s national profile and Oberweis’s prior congressional experience keep them competitive in a race that remains fluid months before voters decide.