2018 Ohio's 12th congressional district special election

A special election for Ohio's 12th congressional district was held August 7, 2018, following the resignation of Republican U.S. Representative Pat Tiberi. The Republican Party nominated State Senator Troy Balderson for the seat while the Democratic Party nominated Franklin County Recorder Danny O'Connor. Balderson led O'Connor in preliminary results; however, the race was not officially called on election night. Counting of outstanding ballots began on August 18 and was completed on August 24. The outstanding ballots did not change the margin enough to trigger an automatic recount, so Balderson was declared the winner on August 24.