| Year | Democratic | Republican | Other
|
| 2004 | Charles W. Sanders: 87,156 | Robert J. Portman: 221,785 | James Condit Jr.
|
| 2002 | Charles W. Sanders: 48,785 | Robert J. Portman: 139,218 | James Condit Jr.: 13
|
| 2000 | Charles W. Sanders: 64,091 | Robert J. Portman: 204,184 | Robert E. Bidwell (L): 9,266
|
| 1998 | Charles W. Sanders: 49,293 | Robert J. Portman: 154,344 |
|
| 1996 | Thomas R. Chandler: 58,715 | Robert J. Portman: 186,853 | Kathleen M. McKnight (N): 13,905
|
| 1994 | Les Mann: 43,730 | Robert J. Portman: 150,128 |
|
| 1992 | Thomas R. Chandler: 75,924 | Willis D. Gradison Jr.: 177,720 |
|
| 1990 | Tyrone K. Yates: 103,817 | Willis D. Gradison Jr.: 103,817 |
|
| 1988 | Chuck R. Stidman: 58,637 | Willis D. Gradison Jr.: 153,162 |
|
| 1986 | William F. Stineman: 43,448 | Willis D. Gradison Jr.: 105,061 |
|
| 1984 | Thomas J. Porter: 68,597 | Willis D. Gradison Jr.: 149,856 |
|
| 1982 | William J. Luttmer: 53,169 | Willis D. Gradison Jr.*: 97,434 | Joseph I. Lombardo: 1,827
Charles K. Shrout Jr. (L): 2,948
|
| 1980 | Thomas A. Luken*: 103,423 | Thearon "Tom" Atkins: 72,693 |
|
| 1978 | Thomas A. Luken: 64,522 | Stanley J. Aronoff: 58,716 |
|
| 1976 | Thomas A. Luken: 88,178 | Donald D. Clancy: 83,459 |
|
| 1974 | Edward W. Wolterman: 67,685 | Donald D. Clancy: 71,512 |
|
| 1972 | Penny Manes: 65,237 | Donald D. Clancy: 109,961 |
|
| 1970 | Gerald N. "Jerry" Springer: 60,860 | Donald D. Clancy: 77,071 |
|
| 1968 | Don Driehaus: 52,327 | Donald D. Clancy: 108,157 |
|
| 1966 | Thomas E. Anderson: 42,367 | Donald D. Clancy: 102,313 |
|
| 1964 | H. A. Sand: 79,824 | Donald D. Clancy: 122,487 |
|
| 1962 | H. A. Sand: 62,733 | Donald D. Clancy: 105,750 |
|
| 1960 | H. A. Sand: 87,531 | Donald D. Clancy: 118,046 |
|
| 1958 | James O. Bradley: 71,674 | William E. Hess: 86,656 |
|
| 1956 | James T. Dewan: 57,554 | William E. Hess: 109,099 |
|
| 1954 | Earl T. Wagner: 49,690 | William E. Hess: 69,695 |
|
| 1952 | Earl T. Wagner: 69,341 | William E. Hess: 90,417 |
|
| 1950 | Earl T. Wagner: 62,542 | William E. Hess: 69,543 |
|
| 1948 | Earl T. Wagner: 75,062 | William E. Hess: 66,968 |
|
| 1946 | Francis G. Davis: 39,112 | William E. Hess: 67,067 |
|
| 1944 | J. Harry Moore: 61,473 | William E. Hess: 78,185 |
|
| 1942 | Nicholas Bauer: 29,823 | William E. Hess: 53,083 |
|
| 1940 | James E. O'Connell: 60,410 | William E. Hess: 77,769 |
|
| 1938 | Herbert S. Bigelow: 42,773 | William E. Hess: 61,480 |
|
| 1936 | Herbert S. Bigelow: 67,213 | William E. Hess: 62,546 |
|
| 1934 | Charles E. Miller: 41,701 | William E. Hess: 51,171 |
|
| 1932 | Edward F. Alexander: 57,258 | William E. Hess: 58,971 |
|
| 1930 | Charles Sawyer: 45,761 | William E. Hess: 46,347 |
|
| 1928 | James H. Cleveland: 54,332 | William E. Hess: 63,605 |
|
| 1926 | Robert J. O'Donnell: 26,322 | A. E. B. Stephens: 36,608 |
|
| 1924 | Robert J. O'Donnell: 34,118 | A. E. B. Stephens: 47,331 |
|
| 1922 | John R. Quane: 30,051 | A. E. B. Stephens: 39,898 | Charles A. Herbst (FL): 4,001
|
| 1920 | Thomas H. Morrow: 41,781 | A. E. B. Stephens: 47,797 | John Partridge: 1,291
|
