| Year | Democratic | Republican | Other
|
| 2004 | Sherrod Brown: 196,139 | Robert Lucas: 95,025 |
|
| 2002 | Sherrod Brown: 123,025 | Ed Oliveros: 55,357 |
|
| 2000 | Sherrod Brown: 170,058 | Rick H. Jeric: 84,295 | Michael A. Chmura (L): 5,837
David C. Kluter (N): 3,108
|
| 1998 | Sherrod Brown: 116,309 | Grace L. Drake: 72,666 |
|
| 1996 | Sherrod Brown: 148,690 | Kenneth C. Blair Jr.: 87,108 | David C. Kluter (N): 8,707
|
| 1994 | Sherrod Brown: 93,147 | Gregory A. White: 86,422 | Howard Mason: 7,777
John Michael Ryan: 2,430
|
| 1992 | Sherrod Brown: 134,486 | Margaret R. Mueller: 88,889 | Mark Miller: 20,320
Tom Lawson: 4,719
Werner J. Lange: 3,844
|
| 1990 | Donald J. Pease: 93,431 | William D. Nielsen Jr.: 60,925 | John Michael Ryan: 10,506
|
| 1988 | Donald J. Pease: 137,074 | Dwight Brown: 59,287 |
|
| 1986 | Donald J. Pease: 88,612 | William D. Nielsen Jr.: 52,452 |
|
| 1984 | Donald J. Pease: 131,923 | William G. Schaffner: 59,610 | Other: 7,223
|
| 1982 | Donald J. Pease: 92,296 | Timothy Paul Martin: 53,376 | James S. Patton: 5,053
|
| 1980 | Donald J. Pease: 113,439 | David Earl Armstrong: 64,296 |
|
| 1978 | Donald J. Pease: 80,875 | Mark W. Whitfield: 43,269 |
|
| 1976 | Donald J. Pease: 108,061 | Woodrow W. Mathna: 49,828 | Patricia A. Cortez: 5,794
|
| 1974 | Fred M. Ritenauer: 53,766 | Charles A. Mosher: 72,881 |
|
| 1972 | John M. Ryan: 51,991 | Charles A. Mosher: 111,242 |
|
| 1970 | Joseph J. Bartolomeo: 53,271 | Charles A. Mosher: 85,858 |
|
| 1968 | Adrian F. Betleski: 59,864 | Charles A. Mosher: 97,158 |
|
| 1966 | Thomas E. Wolfe: 36,751 | Charles A. Mosher: 69,862 |
|
| 1964 | Louis Frey: 62,780 | Charles A. Mosher: 75,945 |
|
| 1962 | J. Grant Keys: 52,030 | Charles A. Mosher: 63,858 |
|
| 1960 | J. William McCray: 69,033 | Charles A. Mosher: 73,100 |
|
| 1958 | J. William McCray: 45,390 | A. David Baumhart Jr.: 65,169 |
|
| 1956 | J. P. Henderson: 32,900 | A. David Baumhart Jr.: 79,324 |
|
| 1954 | George C. Steinemann: 32,177 | A. David Baumhart Jr.: 56,524 |
|
| 1952 | George C. Steinemann: 44,467 | Alvin F. Weichel: 63,344 |
|
| 1950 | Dwight A. Blackmore: 24,042 | Alvin F. Weichel: 58,484 |
|
| 1948 | Dwight A. Blackmore: 38,264 | Alvin F. Weichel: 55,408 |
|
| 1946 | Frank W. Thomas: 19,237 | Alvin F. Weichel: 49,725 |
|
| 1944 | | Alvin F. Weichel: 67,298 |
|
| 1942 | E. C. Alexander: 23,618 | Alvin F. Weichel: 37,923 |
|
| 1940 | Werner S. Haslinger: 40,274 | A. David Baumhart Jr.: 62,442 |
|
| 1938 | William L. Fiesinger: 24,749 | Dudley A. White: 56,204 |
|
| 1936 | Forrest R. Black: 39,042 | Dudley A. White: 46,623 | Merrell E. Martin: 12,959
|
| 1934 | William L. Fiesinger: 43,617 | Walter E. Kruger: 35,889 | Charles C. Few: 764
|
| 1932 | William L. Fiesinger: 56,070 | Walter E. Kruger: 39,122 |
|
| 1930 | William L. Fiesinger: 35,199 | Joseph E. Baird: 35,199 |
|
| 1928 | William C. Martin: 34,015 | Joseph E. Baird: 54,174 |
|
| 1926 | G. C. Steineman: 19,571 | James T. Begg: 36,444 |
|
| 1924 | John Dreitzler: 27,623 | James T. Begg: 45,307 |
|
| 1922 | Arthur W. Overmyer: 30,199 | James T. Begg: 38,994 |
|
| 1920 | Alfred Waggoner: 26,646 | James T. Begg: 48,416 |
|
