| Year | Democratic | Republican | Other
|
| 2004 | Kara Anastasio: 97,972 | David L. Hobson: 182,621 |
|
| 2002 | Kara Anastasio: 45,568 | David L. Hobson: 113,252 | Frank Doden: 8,812
|
| 2000 | Donald E. Minor Jr.: 60,755 | David L. Hobson: 163,646 | John Mitchel: 13,983
Jack D. Null (L): 3,802
|
| 1998 | Donald E. Minor Jr.: 49,780 | David L. Hobson: 120,765 | James A. Schrader (L): 9,146
|
| 1996 | Richard K. Blain: 61,419 | David L. Hobson: 158,087 | Dawn Marie Johnson (N): 13,478
|
| 1994 | | David L. Hobson: 140,124 |
|
| 1992 | Clifford S. Heskett: 66,237 | David L. Hobson: 164,195 |
|
| 1990 | Jack Schira: 59,349 | David L. Hobson: 97,123 |
|
| 1988 | Jack Schira: 50,423 | Michael DeWine: 142,597 |
|
| 1986 | | Michael DeWine: 119,238 |
|
| 1984 | Donald E. Scott: 40,621 | Michael DeWine: 147,885 | Others: 4,352
|
| 1982 | Roger D. Tackett: 65,543 | Michael DeWine: 87,842 | John B. Winer (L): 2,761
|
| 1980 | Donald Hollister: 38,952 | Clarence J. "Bud" Brown Jr.: 124,137 |
|
| 1978 | | Clarence J. "Bud" Brown Jr.: 92,507 |
|
| 1976 | Dorothy Franke: 54,755 | Clarence J. "Bud" Brown Jr.: 101,027 |
|
| 1974 | Patrick L. Nelson: 34,828 | Clarence J. "Bud" Brown Jr.: 73,503 | Dorothy Franke: 13,088
|
| 1972 | | Clarence J. "Bud" Brown Jr.: 112,350 | Dorothy Franke: 40,945
|
| 1970 | Joseph D. Lewis: 37,294 | Clarence J. "Bud" Brown Jr.: 84,448 |
|
| 1968 | Robert E. Cecile: 55,386 | Clarence J. "Bud" Brown Jr.: 97,581 |
|
| 1966 | | Clarence J. "Bud" Brown Jr.: 81,225 |
|
| 1964 | Jerry R. Graham: 70,857 | Clarence J. "Bud" Brown Jr.*: 93,022 |
|
| 1962 | Robert A. Riley: 39,908 | Clarence J. Brown Sr.: 83,680 |
|
| 1960 | Joseph A. Sullivan: 55,451 | Clarence J. Brown Sr.: 105,026 |
|
| 1958 | Joseph A. Sullivan: 48,994 | Clarence J. Brown Sr.: 75,085 |
|
| 1956 | Joseph A. Sullivan: 47,220 | Clarence J. Brown Sr.: 91,439 |
|
| 1954 | G. Louis Wren: 35,504 | Clarence J. Brown Sr.: 62,821 |
|
| 1952 | | Clarence J. Brown Sr.: 98,354 |
|
| 1950 | Ben J. Goldman: 35,818 | Clarence J. Brown Sr.: 77,660 |
|
| 1948 | | Clarence J. Brown Sr.: 71,737 |
|
| 1946 | Carl H. Ehl: 29,824 | Clarence J. Brown Sr.: 63,390 |
|
| 1944 | John L. Cashim: 52,403 | Clarence J. Brown Sr.: 84,770 | Carl H. Ehl: 211
|
| 1942 | George H. Smith: 23,384 | Clarence J. Brown Sr.: 52,270 |
|
| 1940 | J. Fuller Trump: 59,667 | Clarence J. Brown Sr.: 83,415 |
|
| 1938 | Arthur W. Aleshire: 50,163 | Clarence J. Brown Sr.: 68,185 |
|
| 1936 | Arthur W. Aleshire: 68,456 | Leroy T. Marshall: 67,454 |
|
| 1934 | C. W. Rich: 43,226 | Leroy T. Marshall: 46,453 |
|
| 1932 | Aaron J. Halloran: 57,715 | Leroy T. Marshall: 65,064 |
|
| 1930 | John L. Zimmerman Jr.: 35,663 | Charles Brand: 50,595 |
|
| 1928 | Harry E. Rice: 34,323 | Charles Brand: 75,753 |
|
| 1926 | Harry E. Rice: 22,314 | Charles Brand: 45,699 |
|
| 1924 | C. K. Wolf: 34,709 | Charles Brand: 61,557 |
|
| 1922 | Charles B. Zimmerman: 38,522 | Charles Brand: 53,182 |
|
| 1920 | Paul F. Dye: 47,196 | Simeon D. Fess: 73,794 |
|
