List of United States senators from Colorado
Colorado was admitted to the Union on August 1, 1876 and elects U.S. senators to Senate Class 2 and Class 3. Its current U.S. senators are Democrats Michael Bennet (serving since 2009) and John Hickenlooper (serving since 2021). Henry M. Teller was Colorado's longest-serving senator (1876–1882; 1885–1909).
List of senators[]
Class 2 Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2002, 2008, 2014, and 2020. 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 1998, 2004, 2010, and 2016. The next election will be in 2022. | ||||||||||
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# | Senator | Party | Dates in office | Electoral history | T | T | Electoral history | Dates in office | Party | Senator | # | |
Vacant | August 1, 1876 – November 15, 1876 |
Colorado did not elect its senators until three months after statehood. | 1 | 44th | 1 | Colorado did not elect its senators until three months after statehood. | August 1, 1876 – November 15, 1876 |
Vacant | ||||
1 | ![]() Henry M. Teller |
Republican | November 15, 1876 – April 17, 1882 |
Elected in 1876. | Elected in 1876. Retired. |
November 15, 1876 – March 3, 1879 |
Republican | ![]() Jerome B. Chaffee |
1 | |||
Elected to next term in 1876 or 1877. Resigned to become U.S. Secretary of the Interior. |
2 | 45th | ||||||||||
46th | 2 | Elected in 1879. Lost re-nomination. |
March 4, 1879 – March 3, 1885 |
Republican | ![]() Nathaniel P. Hill |
2 | ||||||
47th | ||||||||||||
2 | ![]() George M. Chilcott |
Republican | April 17, 1882 – January 27, 1883 |
Appointed to continue Teller's term. Did not run to finish the term. | ||||||||
3 | ![]() Horace Tabor |
Republican | January 27, 1883 – March 3, 1883 |
Elected to finish Teller's term. Retired. | ||||||||
4 | ![]() Thomas M. Bowen |
Republican | March 4, 1883 – March 3, 1889 |
Election date unknown. Unknown if retired or lost re-election. |
3 | 48th | ||||||
49th | 3 | Elected in 1885. | March 4, 1885 – March 3, 1909 |
Republican | ![]() Henry M. Teller |
3 | ||||||
50th | ||||||||||||
5 | ![]() Edward O. Wolcott |
Republican | March 4, 1889 – March 3, 1901 |
Elected in 1889. | 4 | 51st | ||||||
52nd | 4 | Re-elected in 1891. | ||||||||||
53rd | ||||||||||||
Re-elected in 1895. Lost re-election. |
5 | 54th | ||||||||||
55th | 5 | Re-elected January 20, 1897.[1] | Silver Republican | |||||||||
56th | ||||||||||||
6 | ![]() Thomas M. Patterson |
Democratic | March 4, 1901 – March 3, 1907 |
Elected in 1901. Retired. |
6 | 57th | ||||||
58th | 6 | Re-elected in 1903. Retired. |
Democratic | |||||||||
59th | ||||||||||||
7 | ![]() Simon Guggenheim |
Republican | March 4, 1907 – March 3, 1913 |
Elected January 16, 1907. Retired. |
7 | 60th | ||||||
61st | 7 | Elected January 19, 1909. Died. |
March 4, 1909 – January 11, 1911 |
Democratic | ![]() Charles J. Hughes Jr. |
4 | ||||||
January 11, 1911 – January 15, 1913 |
Vacant | |||||||||||
62nd | ||||||||||||
Elected to finish Hughes's term. | January 15, 1913 – March 3, 1921 |
Democratic | ![]() Charles S. Thomas |
5 | ||||||||
8 | ![]() John F. Shafroth |
Democratic | March 4, 1913 – March 3, 1919 |
Elected January 14, 1913. Lost re-election. |
8 | 63rd | ||||||
64th | 8 | Re-elected in 1914. Lost re-election. | ||||||||||
65th | ||||||||||||
9 | ![]() Lawrence C. Phipps |
Republican | March 4, 1919 – March 3, 1931 |
Elected in 1918. | 9 | 66th | ||||||
67th | 9 | Elected in 1920. Died. |
March 4, 1921 – March 24, 1923 |
Republican | ![]() Samuel D. Nicholson |
6 | ||||||
68th | ||||||||||||
March 24, 1923 – May 17, 1923 |
Vacant | |||||||||||
Appointed to continue Nicholson's term. Retired. |
May 17, 1923 – November 30, 1924 |
Democratic | ![]() Alva B. Adams |
7 | ||||||||
Elected to finish Nicholson's term. Lost renomination. |
December 1, 1924 – March 3, 1927 |
Republican | ![]() Rice W. Means |
8 | ||||||||
Re-elected in 1924. Retired. |
10 | 69th | ||||||||||
70th | 10 | Elected in 1926. Died. |
March 4, 1927 – August 27, 1932 |
Republican | ![]() Charles W. Waterman |
9 | ||||||
71st | ||||||||||||
10 | ![]() Edward P. Costigan |
Democratic | March 4, 1931 – January 3, 1937 |
Elected in 1930. Retired. |
11 | 72nd | ||||||
August 27, 1932 – September 26, 1932 |
Vacant | |||||||||||
Appointed to continue Waterman's term. Lost election to finish Waterman's term. |
September 26, 1932 – December 6, 1932 |
Democratic | ![]() Walter Walker |
10 | ||||||||
Elected to finish Waterman's term. Lost election to next term. |
December 7, 1932 – March 3, 1933 |
Republican | ![]() Karl C. Schuyler |
11 | ||||||||
73rd | 11 | Elected in 1932. | March 4, 1933 – December 1, 1941 |
Democratic | ![]() Alva B. Adams |
12 | ||||||
74th | ||||||||||||
11 | ![]() Edwin C. Johnson |
Democratic | January 3, 1937 – January 3, 1955 |
Elected in 1936. | 12 | 75th | ||||||
76th | 12 | Re-elected in 1938. Died. | ||||||||||
77th | ||||||||||||
December 1, 1941 – December 20, 1941 |
Vacant | |||||||||||
Appointed to continue Adams's term. Elected November 4, 1942 to finish Adams's term.[2] |
December 20, 1941 – January 3, 1957 |
Republican | ![]() Eugene Millikin |
13 | ||||||||
Re-elected in 1942. | 13 | 78th | ||||||||||
79th | 13 | Elected to a full term in 1944. | ||||||||||
80th | ||||||||||||
Re-elected in 1948. Retired. |
14 | 81st | ||||||||||
82nd | 14 | Re-elected in 1950. Retired. | ||||||||||
83rd | ||||||||||||
12 | ![]() Gordon Allott |
Republican | January 3, 1955 – January 3, 1973 |
Elected in 1954. | 15 | 84th | ||||||
85th | 15 | Elected in 1956. Lost re-election. |
January 3, 1957 – January 3, 1963 |
Democratic | ![]() John A. Carroll |
14 | ||||||
86th | ||||||||||||
Re-elected in 1960. | 16 | 87th | ||||||||||
88th | 16 | Elected in 1962. | January 3, 1963 – January 3, 1975 |
Republican | ![]() Peter H. Dominick |
15 | ||||||
89th | ||||||||||||
Re-elected in 1966. Lost re-election. |
17 | 90th | ||||||||||
91st | 17 | Re-elected in 1968. Lost re-election. | ||||||||||
92nd | ||||||||||||
13 | ![]() Floyd Haskell |
Democratic | January 3, 1973 – January 3, 1979 |
Elected in 1972. Lost re-election. |
18 | 93rd | ||||||
94th | 18 | Elected in 1974. | January 3, 1975 – January 3, 1987 |
Democratic | ![]() Gary Hart |
16 | ||||||
95th | ||||||||||||
14 | ![]() William L. Armstrong |
Republican | January 3, 1979 – January 3, 1991 |
Elected in 1978. | 19 | 96th | ||||||
97th | 19 | Re-elected in 1980. Retired. | ||||||||||
98th | ||||||||||||
Re-elected in 1984. Retired. |
20 | 99th | ||||||||||
100th | 20 | Elected in 1986. Retired. |
January 3, 1987 – January 3, 1993 |
Democratic | ![]() Tim Wirth |
17 | ||||||
101st | ||||||||||||
15 | ![]() Hank Brown |
Republican | January 3, 1991 – January 3, 1997 |
Elected in 1990. Retired. |
21 | 102nd | ||||||
103rd | 21 | Elected in 1992. Changed parties March 3, 1995. |
January 3, 1993 – January 3, 2005 |
Democratic | ![]() Ben Nighthorse Campbell |
18 | ||||||
104th | ||||||||||||
Republican | ||||||||||||
16 | ![]() Wayne Allard |
Republican | January 3, 1997 – January 3, 2009 |
Elected in 1996. | 22 | 105th | ||||||
106th | 22 | Re-elected in 1998. Retired. | ||||||||||
107th | ||||||||||||
Re-elected in 2002. Retired. |
23 | 108th | ||||||||||
109th | 23 | Elected in 2004. Resigned to become U.S. Secretary of the Interior. |
January 3, 2005 – January 20, 2009 |
Democratic | ![]() Ken Salazar |
19 | ||||||
110th | ||||||||||||
17 | ![]() Mark Udall |
Democratic | January 3, 2009 – January 3, 2015 |
Elected in 2008. Lost re-election. |
24 | 111th | ||||||
Appointed to finish Salazar's term. | January 21, 2009 – Present |
Democratic | ![]() Michael Bennet |
20 | ||||||||
112th | 24 | Elected to a full term in 2010. | ||||||||||
113th | ||||||||||||
18 | ![]() Cory Gardner |
Republican | January 3, 2015 – January 3, 2021 |
Elected in 2014. Lost re-election. |
25 | 114th | ||||||
115th | 25 | Re-elected in 2016. | ||||||||||
116th | ||||||||||||
19 | ![]() John Hickenlooper |
Democratic | January 3, 2021 – Present |
Elected in 2020. | 26 | 117th | ||||||
118th | 26 | To be determined in the 2022 election. | ||||||||||
119th | ||||||||||||
To be determined in the 2026 election. | 27 | 120th | ||||||||||
# | Senator | Party | Years in office | Electoral history | T | T | Electoral history | Years in office | Party | Senator | # | |
Class 2 | Class 3 |
Living former senators[]
As of August 2021, there are eight living former U.S. senators from Colorado. The most recent and most recently serving senator to die was William L. Armstrong (served 1979–1991) on July 5, 2016.
Senator | Term of office | Date of birth (and age) |
---|---|---|
Gary Hart | January 3, 1975 – January 3, 1987 | November 28, 1936 |
Tim Wirth | January 3, 1987 – January 3, 1993 | September 22, 1939 |
Hank Brown | January 3, 1991 – January 3, 1997 | February 12, 1940 |
Ben N. Campbell | January 3, 1993 – January 3, 2005 | April 13, 1933 |
Wayne Allard | January 3, 1997 – January 3, 2009 | December 2, 1943 |
Ken Salazar | January 3, 2005 – January 20, 2009 | March 2, 1955 |
Mark Udall | January 3, 2009 – January 3, 2015 | July 18, 1950 |
Cory Gardner | January 3, 2015 – January 3, 2021 | August 22, 1974 |
Superlatives[]
Longest service[]
Senator | First served | Last served | Length of service |
---|---|---|---|
Henry M. Teller | November 15, 1876 | April 17, 1882 | Combined total: 29 years, 153 days (10,738 days) |
March 4, 1885 | March 3, 1909 | ||
Gordon Allott | January 3, 1955 | January 3, 1973 | 18 years, 0 days (6,575 days) |
Edwin C. Johnson | January 3, 1937 | January 3, 1955 | 18 years, 0 days (6,574 days) |
Eugene Millikin | December 20, 1941 | January 3, 1957 | 15 years, 14 days (5,493 days) |
Michael Bennet | January 21, 2009 | Present | 12 years, 219 days (4,602 days) |
Shortest service[]
Excludes incumbent Hickenlooper
Senator | First served | Last served | Length of service |
---|---|---|---|
Horace Tabor | January 27, 1883 | March 3, 1883 | 1 month and 4 days (35 days) |
Walter Walker | September 26, 1932 | December 6, 1932 | 2 months, 1 week and 3 days (71 days) |
Karl C. Schuyler | December 7, 1932 | March 3, 1933 | 2 months, 3 weeks and 3 days (86 days) |
George M. Chilcott | April 17, 1882 | January 27, 1883 | 9 months, 1 week and 3 days (285 days) |
Charles J. Hughes Jr. | March 4, 1909 | January 11, 1911 | 1 year, 10 months and 1 week (678 days) |
Youngest at beginning of service[]
Senator | Date of birth | First served | Age |
---|---|---|---|
Gary Hart | November 28, 1936 | January 3, 1975 | 38 years, 1 month and 6 days |
Simon Guggenheim | December 30, 1867 | March 4, 1907 | 39 years, 2 months and 4 days |
Cory Gardner | August 22, 1974 | January 3, 2015 | 40 years, 4 months and 12 days |
Edward O. Wolcott | March 26, 1848 | March 4, 1889 | 40 years, 11 months and 6 days |
William L. Armstrong | March 16, 1937 | January 3, 1979 | 41 years, 9 months and 18 days |
Oldest at end of service[]
Senator | Date of birth | Last served | Age |
---|---|---|---|
Henry M. Teller | May 23, 1830 | March 3, 1909 | 78 years, 9 months and 8 days |
Ben Nighthorse Campbell | April 13, 1933 | January 3, 2005 | 71 years, 8 months and 21 days |
Charles S. Thomas | December 6, 1849 | March 3, 1921 | 71 years, 2 months and 25 days |
Edwin C. Johnson | January 1, 1884 | January 3, 1955 | 71 years and 2 days |
Charles W. Waterman | November 2, 1861 | August 27, 1932 | 70 years, 9 months and 25 days |
See also[]
- United States congressional delegations from Colorado
- List of United States representatives from Colorado
- Colorado's congressional districts
Notes[]
- ^ "Teller in Colorado". The New York Times. January 21, 1897. p. 2.
- ^ Byrd, p. 86.
References[]
- Byrd, Robert C. (October 1, 1993). Wolff, Wendy (ed.). The Senate, 1789-1989: Historical Statistics, 1789-1992. United States Senate Historical Office (volume 4 Bicentennial ed.). Washington, D.C.: U.S. Government Printing Office. ISBN 9780160632563.
- United States senators from Colorado
- Lists of Colorado politicians
- Lists of United States senators by state