| Year | Democratic | Republican | Other
|
| 2004 | Edward S. Brown: 149,983 | Patrick J. Tiberi: 285,317 |
|
| 2002 | Edward S. Brown: 64,707 | Patrick J. Tiberi: 116,982 |
|
| 2000 | Maryellen O'Shaughnessy: 115,432 | Patrick J. Tiberi: 139,242 | Charles Ed Jordan: 1,566
Nick Hogan (L): 4,546
Gregory B. Richey (N): 2,600
|
| 1998 | Edward S. Brown: 60,694 | John R. Kasich: 124,197 |
|
| 1996 | Cynthia L. Ruccia: 78,762 | John R. Kasich: 151,667 | Barbara Ann Edelman (N): 7,005
|
| 1994 | Cynthia L. Ruccia: 57,294 | John R. Kasich: 114,608 |
|
| 1992 | Bob Fitrakis: 68,761 | John R. Kasich: 170,297 |
|
| 1990 | Mike Gelpi: 50,784 | John R. Kasich: 130,495 |
|
| 1988 | Mark P. Brown: 50,782 | John R. Kasich: 204,892 |
|
| 1986 | Timothy C. Jochim: 42,727 | John R. Kasich: 117,905 |
|
| 1984 | Richard S. Sloan: 65,215 | John R. Kasich: 148,899 |
|
| 1982 | Robert N. Shamansky: 82,753 | John R. Kasich: 88,335 | Russell A. Lewis (L): 3,939
|
| 1980 | Robert N. Shamansky: 108,690 | Samuel L. Devine: 98,110 |
|
| 1978 | James L. Baumann: 61,698 | Samuel L. Devine: 81,573 |
|
| 1976 | Francine Ryan: 89,424 | Samuel L. Devine: 90,987 | Patricia A. Cortez: 5,794
|
| 1974 | Francine Ryan: 70,818 | Samuel L. Devine: 73,303 |
|
| 1972 | James W. Goodrich: 81,074 | Samuel L. Devine: 103,655 |
|
| 1970 | James W. Goodrich: 60,538 | Samuel L. Devine: 82,486 |
|
| 1968 | Herbert J. Pfeifer: 51,202 | Samuel L. Devine: 106,664 |
|
| 1966 | Robert N. Shamansky: 39,140 | Samuel L. Devine: 70,102 |
|
| 1964 | Robert L. Van Heyde: 118,299 | Samuel L. Devine: 146,971 |
|
| 1962 | Paul D. Cassidy: 60,563 | Samuel L. Devine: 130,316 |
|
| 1960 | Richard E. Liming: 90,894 | Samuel L. Devine: 140,236 |
|
| 1958 | Walter J. Shapter Jr.: 84,470 | Samuel L. Devine: 100,684 |
|
| 1956 | Walter J. Shapter Jr.: 79,597 | John M. Vorys: 128,682 |
|
| 1954 | Jacob F. Myers: 59,210 | John M. Vorys: 94,585 |
|
| 1952 | George T. Tarbutton: 81,665 | John M. Vorys: 134,693 |
|
| 1950 | John W. Guy: 65,860 | John M. Vorys: 117,396 |
|
| 1948 | Robert M. Draper: 87,770 | John M. Vorys: 95,575 |
|
| 1946 | Arthur P. Lamneck: 45,779 | John M. Vorys: 74,691 |
|
| 1944 | Forrest F. Smith: 82,503 | John M. Vorys: 97,856 |
|
| 1942 | Arthur P. Lamneck: 40,290 | John M. Vorys: 56,558 |
|
| 1940 | Arthur P. Lamneck: 87,115 | John M. Vorys: 91,767 |
|
| 1938 | Arthur P. Lamneck: 62,026 | Jonn M. Vorys: 64,409 |
|
| 1936 | Arthur P. Lamneck: 88,222 | Grant P. Ward: 64,766 |
|
| 1934 | Arthur P. Lamneck: 63,396 | John C. Speaks: 50,386 |
|
| 1932 | Arthur P. Lamneck: 63,135 | John C. Speaks: 62,704 |
|
| 1930 | Arthur P. Lamneck: 59,330 | John C. Speaks: 43,840 |
|
| 1928 | Carl H. Valentine: 50,216 | John C. Speaks: 82,574 |
|
| 1926 | H. S. Atkinson: 31,724 | John C. Speaks: 41,119 |
|
| 1924 | Lowry F. Sater: 41,291 | John C. Speaks: 58,705 |
|
| 1922 | H. Sage Valentine: 37,875 | John C. Speaks: 47,265 | William Garminden (SL): 632
|
| 1920 | Arthur P. Lamneck: 43,845 | John C. Speaks: 62,247 | Enoch B. Eubanks: 1,481
|
