Incumbent Republican Mike Carey holds a narrow edge over Democrat Don Leonard in Ohio's 15th District, where recent polling from August showed Carey at 41% to Leonard's 37%. Forecasters rate the seat Solid or Likely Republican based on its R+4 to R+10 partisan lean under new lines and Trump's 10-point 2024 margin there. National Democratic advantages on the generic ballot have prompted some rating downgrades, keeping the race competitive and supporting trader focus on Republican margins clustered between 3% and 12%. Limited public data and the November 3 general election timeline leave room for shifts from turnout or late campaign dynamics.