The following chart shows historic election results. Bold type indicates victor. Italic type indicates incumbent.
| Year |
Democratic |
Republican |
Other |
| 2006 |
William R. Conner: 85,202 |
David L. Hobson: 133,112 |
|
| 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 |
R. Michael DeWine: 142,597 |
|
| 1986 |
|
R. Michael DeWine: 119,238 |
|
| 1984 |
Donald E. Scott: 40,621 |
R. Michael DeWine: 147,885 |
Others: 4,352 |
| 1982 |
Roger D. Tackett: 65,543 |
R. 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 |
|