Incumbent Republican Mike Carey holds a clear edge in Ohio's 15th Congressional District, where the partisan voter index favors Republicans by roughly five points and the area delivered a double-digit margin for the GOP presidential ticket in 2024. Carey's unopposed primary win, combined with over $3 million raised versus Don Leonard's roughly $600,000, has reinforced trader views of a comfortable hold. Summer 2026 polling showed Carey ahead by four to five points in head-to-head tests, with a Libertarian candidate drawing additional support. Leonard's primary victory and endorsements from groups focused on campaign finance reform have not offset the district's structural lean or Carey's incumbency advantages ahead of the November 3 general election.