Ohio's 15th senatorial district has always been based in Columbus, Ohio. Currently it comprises central Franklin County. It encompasses Ohio House districts 18, 25 and 26. It has a Cook PVI of D+25. Ohio Governor John Kasich represented the district from 1979 to 1982. Its current Ohio Senator is Democrat Hearcel Craig. He resides in Columbus, a city located in Franklin, Delaware, and Fairfield counties.
| Senator | Party | Term | Notes | ||
|---|---|---|---|---|---|
| John W. Bowen | Republican | January 3, 1967 – December 31, 1970 | Bowen lost re-election in 1970 to Jerry O'Shaughnessy. | ||
| Jerry O'Shaughnessy | Democrat | January 5, 1971 – August 23, 1972 | O'Shaughnessy died prior to the expiration of his term in 1974. | ||
| Robert O'Shaughnessy | Democrat | October 2, 1972 – December 31, 1978 | O'Shaughnessy lost re-election in 1978 to John Kasich. | ||
| John Kasich | Republican | January 3, 1979 – December 31, 1982 | Kasich did not seek re-election to the Ohio Senate in 1982. | ||
| Richard Pfeiffer | Democrat | January 3, 1983 – April 21, 1992 | Pfeiffer resigned to take a seat on the Franklin County Municipal Court. | ||
| Ben Espy | Democrat | April 21, 1992 – December 31, 2002 | Espy was term-limited in 2002. | ||
| Ray Miller | Democrat | January 6, 2003 – December 31, 2010 | Miller was term-limited in 2010. | ||
| Charleta Tavares | Democrat | January 3, 2011 – December 31, 2018 | Tavares was term-limited in 2018. | ||
| Hearcel Craig | Democrat | January 1, 2019 – present | Incumbent |