Recent polls show Catalina Lauf and Jim Schwartzel essentially tied in the low-to-mid teens with over a third of voters undecided in the crowded August 18 Republican primary for the open Florida 19th district seat. Recent endorsements from Republican lawmakers Greg Steube and Kat Cammack have given Lauf a modest edge in some surveys, while Schwartzel benefits from deeper local ties as a Naples businessman and a fundraising lead exceeding $2 million. High undecided shares and a fragmented field of more than eight candidates, including Jim Oberweis, have kept the contest close. Additional late endorsements, new polling, or intensified advertising in the final days could shift support among the remaining undecided voters ahead of primary day.