Trump's endorsement of Catalina Lauf days before the August 18 primary has consolidated support in the crowded open-seat Republican primary for Florida's 19th Congressional District, lifting her to an 82.5% implied probability among traders. Pre-endorsement polling showed Lauf and local businessman Jim Schwartzel essentially tied in the high teens amid heavy undecided voters, with self-funded candidate Jim Oberweis also in double digits. Additional backing from Florida congressional colleagues has reinforced Lauf's frontrunner status, while the remaining candidates including Madison Cawthorn, Bob Rommel, and Spencer Roach trail far behind in both surveys and market pricing. The primary winner will face a strongly Republican-leaning general election.