Oklahoma was admitted to the Union on November 16, 1907, and elects United States senators to class 2 and class 3. The state's current U.S. senators are Republicans James Lankford (serving since 2015) and Markwayne Mullin (serving since 2023). Oklahoma's longest-serving senator was Jim Inhofe, who served from 1994 to 2023.
Class 2 Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2008, 2014, 2020, and 2022 (special election). The next election will be in 2026. | C | Class 3 Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2010, 2014 (special election), 2016, and 2022. The next election will be in 2028. | ||||||||||
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# | Senator | Party | Dates in office | Electoral history | T | T | Electoral history | Dates in office | Party | Senator | # | |
Vacant | Nov 16, 1907 – Dec 11, 1907 | Oklahoma did not elect its senators until one month after statehood. | 1 | 60th | 1 | Oklahoma did not elect its senators until one month after statehood. | Nov 16, 1907 – Dec 11, 1907 | Vacant | ||||
1 | Robert L. Owen | Democratic | Dec 11, 1907 – Mar 4, 1925 | Elected in 1907. | Elected in 1907. | Dec 11, 1907 – Mar 4, 1921 | Democratic | Thomas Gore | 1 | |||
61st | 2 | Re-elected in 1909. | ||||||||||
62nd | ||||||||||||
Re-elected in 1913. | 2 | 63rd | ||||||||||
64th | 3 | Re-elected in 1914.Lost renomination. | ||||||||||
65th | ||||||||||||
Re-elected in 1918.Retired. | 3 | 66th | ||||||||||
67th | 4 | Elected in 1920.Lost re-election. | Mar 4, 1921 – Mar 4, 1927 | Republican | John W. Harreld | 2 | ||||||
68th | ||||||||||||
2 | William B. Pine | Republican | Mar 4, 1925 – Mar 4, 1931 | Elected in 1924.Lost re-election. | 4 | 69th | ||||||
70th | 5 | Elected in 1926. | Mar 4, 1927 – Jan 3, 1951 | Democratic | Elmer Thomas | 3 | ||||||
71st | ||||||||||||
3 | Thomas Gore | Democratic | Mar 4, 1931 – Jan 3, 1937 | Elected in 1930.Lost renomination. | 5 | 72nd | ||||||
73rd | 6 | Re-elected in 1932. | ||||||||||
74th | ||||||||||||
4 | Joshua B. Lee | Democratic | Jan 3, 1937 – Jan 3, 1943 | Elected in 1936.Lost re-election. | 6 | 75th | ||||||
76th | 7 | Re-elected in 1938. | ||||||||||
77th | ||||||||||||
5 | Edward H. Moore | Republican | Jan 3, 1943 – Jan 3, 1949 | Elected in 1942.Retired. | 7 | 78th | ||||||
79th | 8 | Re-elected in 1944.Lost renomination. | ||||||||||
80th | ||||||||||||
6 | Robert S. Kerr | Democratic | Jan 3, 1949 – Jan 1, 1963 | Elected in 1948. | 8 | 81st | ||||||
82nd | 9 | Elected in 1950. | Jan 3, 1951 – Jan 3, 1969 | Democratic | Mike Monroney | 4 | ||||||
83rd | ||||||||||||
Re-elected in 1954. | 9 | 84th | ||||||||||
85th | 10 | Re-elected in 1956. | ||||||||||
86th | ||||||||||||
Re-elected in 1960.Died. | 10 | 87th | ||||||||||
Vacant | Jan 1, 1963 – Jan 7, 1963 | |||||||||||
88th | 11 | Re-elected in 1962.Lost re-election. | ||||||||||
7 | J. Howard Edmondson | Democratic | Jan 7, 1963 – Nov 3, 1964 | Appointed to continue Kerr's termLost nomination to finish Kerr's term. | ||||||||
8 | Fred R. Harris | Democratic | Nov 3, 1964 – Jan 3, 1973 | Elected to finish Kerr's term. | ||||||||
89th | ||||||||||||
Re-elected in 1966.Retired. | 11 | 90th | ||||||||||
91st | 12 | Elected in 1968. | Jan 3, 1969 – Jan 3, 1981 | Republican | Henry Bellmon | 5 | ||||||
92nd | ||||||||||||
9 | Dewey F. Bartlett | Republican | Jan 3, 1973 – Jan 3, 1979 | Elected in 1972.Retired. | 12 | 93rd | ||||||
94th | 13 | Re-elected in 1974.Retired. | ||||||||||
95th | ||||||||||||
10 | David Boren | Democratic | Jan 3, 1979 – Nov 15, 1994 | Elected in 1978. | 13 | 96th | ||||||
97th | 14 | Elected in 1980. | Jan 3, 1981 – Jan 3, 2005 | Republican | Don Nickles | 6 | ||||||
98th | ||||||||||||
Re-elected in 1984. | 14 | 99th | ||||||||||
100th | 15 | Re-elected in 1986. | ||||||||||
101st | ||||||||||||
Re-elected in 1990.Resigned to become President of the University of Oklahoma. | 15 | 102nd | ||||||||||
103rd | 16 | Re-elected in 1992. | ||||||||||
Vacant | Nov 15, 1994 – Nov 17, 1994 | |||||||||||
11 | Jim Inhofe | Republican | Nov 17, 1994 – Jan 3, 2023 | Elected in 1994 to finish Boren's term. | ||||||||
104th | ||||||||||||
Re-elected in 1996. | 16 | 105th | ||||||||||
106th | 17 | Re-elected in 1998.Retired. | ||||||||||
107th | ||||||||||||
Re-elected in 2002. | 17 | 108th | ||||||||||
109th | 18 | Elected in 2004. | Jan 3, 2005 – Jan 3, 2015 | Republican | Tom Coburn | 7 | ||||||
110th | ||||||||||||
Re-elected in 2008. | 18 | 111th | ||||||||||
112th | 19 | Re-elected in 2010.Resigned. | ||||||||||
113th | ||||||||||||
Re-elected in 2014. | 19 | 114th | Elected in 2014 to finish Coburn's term. | Jan 3, 2015 – present | Republican | James Lankford | 8 | |||||
115th | 20 | Re-elected in 2016. | ||||||||||
116th | ||||||||||||
Re-elected in 2020.Resigned. | 20 | 117th | ||||||||||
12 | Markwayne Mullin | Republican | Jan 3, 2023 – present | Elected in 2022 to finish Inhofe's term. | 118th | 21 | Re-elected in 2022. | |||||
119th | ||||||||||||
To be determined in the 2026 election. | 21 | 120th | ||||||||||
121st | 22 | To be determined in the 2028 election. | ||||||||||
# | Senator | Party | Years in office | Electoral history | T | C | T | Electoral history | Years in office | Party | Senator | # |
Class 2 | Class 3 |