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Class 1 Seat
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Class 3 Seat
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Service
|
Senator | Party |
Service
|
Senator | Party | |
|
1889-1893
|
Lyman R. Casey | Republican |
1889-1891
|
Gilbert A. Pierce | Republican | |
| 1893-1899 | William N. Roach | Democrat | 1891-1909 | Henry C. Hansbrough | Republican | |
| 1899-1923 | Porter J. McCumber | Republican | 1909-1909 | Martin N. Johnson | Republican | |
| 1923-1941 | Lynn J. Frazier | Republican | 1909-1910 | Fountain L. Thompson | Democrat | |
| 1941-1959 | William Langer | Republican | 1910-1911 | William E. Purcell | Democrat | |
| 1959-1960 | C. Norman Brunsdale | Republican | 1911-1921 | Asle J. Gronna | Republican | |
| 1960-1992 | Quentin N. Burdick | Democrat | 1921-1925 | Edwin F. Ladd | Republican | |
| 1992-1992 | Jocelyn B. Burdick | Democrat | 1925-1945 | Gerald P. Nye | Republican | |
| 1992- | Kent Conrad | Democrat | 1945-1945 | John Moses | Democrat | |
| 1945-1981 | Milton R. Young | Republican | ||||
| 1981-1987 | Mark Andrews | Republican | ||||
| 1987-1992 | Kent Conrad | Democrat | ||||
| 1992- | Byron L. Dorgan | Democrat | ||||
| North Dakota History | ||