List of United States senators from Colorado
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Colorado Colorado (, other variants) is a state in the Mountain states, Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the wes ...
was admitted to the
Union Union commonly refers to: * Trade union, an organization of workers * Union (set theory), in mathematics, a fundamental operation on sets Union may also refer to: Arts and entertainment Music * Union (band), an American rock group ** ''Un ...
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 John Wright Hickenlooper Jr. (; born February 7, 1952) is an American politician serving as the junior United States senator from Colorado since 2021. A member of the Democratic Party, he served as the 42nd governor of Colorado from 2011 to 20 ...
(serving since 2021). Henry M. Teller was Colorado's longest-serving senator (1876–1882; 1885–1909).


List of senators

, - style="height:2em" , colspan=3 , Vacant , Aug 1, 1876 –
Nov 15, 1876 , Colorado did not elect its senators until three months after statehood. , rowspan=2 , 1 , , rowspan=3 , 1 , Colorado did not elect its senators until three months after statehood. , Aug 1, 1876 –
Nov 15, 1876 , colspan=3 , Vacant , - style="height:2em" ! rowspan=4 , 1 , rowspan=4 align=left ,
Henry M. Teller , rowspan=4 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=4 nowrap , Nov 15, 1876 –
Apr 17, 1882 , Elected in 1876. , rowspan=2 , Elected in 1876.Retired. , rowspan=2 nowrap , Nov 15, 1876 –
Mar 3, 1879 , rowspan=2 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=2 align=right ,
Jerome B. Chaffee ! rowspan=2 , 1 , - style="height:2em" , rowspan=3 , Elected to next term in 1876 or 1877.Resigned to become U.S. Secretary of the Interior. , rowspan=5 , 2 , , - style="height:2em" , , rowspan=5 , 2 , rowspan=5 , Elected in 1879.Lost re-nomination. , rowspan=5 nowrap , Mar 4, 1879 –
Mar 3, 1885 , rowspan=5 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=5 align=right ,
Nathaniel P. Hill ! rowspan=5 , 2 , - style="height:2em" , rowspan=3 , - style="height:2em" ! 2 , align=left ,
George M. Chilcott , ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, nowrap , Apr 17, 1882 –
Jan 27, 1883 , Appointed to continue Teller's term.Did not run to finish the term. , - style="height:2em" ! 3 , align=left ,
Horace Tabor Quintus Horatius Flaccus (; 8 December 65 – 27 November 8 BC), known in the English-speaking world as Horace (), was the leading Roman lyric poet during the time of Augustus (also known as Octavian). The rhetorician Quintilian regarded his ' ...
, ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, nowrap , Jan 27, 1883 –
Mar 3, 1883 , Elected to finish Teller's term.Retired. , - style="height:2em" ! rowspan=3 , 4 , rowspan=3 align=left ,
Thomas M. Bowen , rowspan=3 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=3 nowrap , Mar 4, 1883 –
Mar 3, 1889 , rowspan=3 , Election date unknown.Unknown if retired or lost re-election. , rowspan=3 , 3 , , - style="height:2em" , , rowspan=3 , 3 , rowspan=3 , Elected in 1885. , rowspan=12 nowrap , Mar 4, 1885 –
Mar 3, 1909 , rowspan=6 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=12 align=right ,
Henry M. Teller ! rowspan=12 , 3 , - style="height:2em" , , - style="height:2em" ! rowspan=6 , 5 , rowspan=6 align=left ,
Edward O. Wolcott , rowspan=6 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=6 nowrap , Mar 4, 1889 –
Mar 3, 1901 , rowspan=3 , Elected in 1889. , rowspan=3 , 4 , , - style="height:2em" , , rowspan=3 , 4 , rowspan=3 , Re-elected in 1891. , - style="height:2em" , , - style="height:2em" , rowspan=3 , Re-elected in 1895.Lost re-election. , rowspan=3 , 5 , , - style="height:2em" , , rowspan=3 , 5 , rowspan=3 , Re-elected in 1897. , rowspan=3 , Silver Republican , - style="height:2em" , , - style="height:2em" ! rowspan=3 , 6 , rowspan=3 align=left ,
Thomas M. Patterson Thomas MacDonald Patterson (November 4, 1839 – July 23, 1916) was an American politician and newspaper publisher who served as a member of the United States Senate and United States House of Representatives from Colorado. Early life Patters ...
, rowspan=3 , Democratic , rowspan=3 nowrap , Mar 4, 1901 –
Mar 3, 1907 , rowspan=3 , Elected in 1901.Retired. , rowspan=3 , 6 , , - style="height:2em" , , rowspan=3 , 6 , rowspan=3 , Re-elected in 1903.Retired. , rowspan=3 , Democratic , - style="height:2em" , , - style="height:2em" ! rowspan=5 , 7 , rowspan=5 align=left ,
Simon Guggenheim John Simon Guggenheim (December 30, 1867 – November 2, 1941) was an American businessman, politician and philanthropist. Life Born in Philadelphia, Pennsylvania of Jewish descent, Simon Guggenheim was the son of Meyer Guggenheim and Barbara G ...
, rowspan=5 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=5 nowrap , Mar 4, 1907 –
Mar 3, 1913 , rowspan=5 , Elected in 1907.Retired. , rowspan=5 , 7 , , - style="height:2em" , rowspan=2 , rowspan=5 , 7 , Elected in 1909.Died. , nowrap , Mar 4, 1909 –
Jan 11, 1911 , , Democratic , align=right ,
Charles J. Hughes Jr. ! 4 , - style="height:2em" , rowspan=2 ,   , rowspan=2 nowrap , Jan 11, 1911 –
Jan 15, 1913 , rowspan=2 colspan=3 , ''Vacant'' , - style="height:2em" , rowspan=2 , - style="height:2em" , rowspan=2 , Elected to finish Hughes's term. , rowspan=5 nowrap , Jan 15, 1913 –
Mar 3, 1921 , rowspan=5 , Democratic , rowspan=5 align=right ,
Charles S. Thomas ! rowspan=5 , 5 , - style="height:2em" ! rowspan=3 , 8 , rowspan=3 align=left ,
John F. Shafroth , rowspan=3 , Democratic , rowspan=3 nowrap , Mar 4, 1913 –
Mar 3, 1919 , rowspan=3 , Elected in 1913.Lost re-election. , rowspan=3 , 8 , , - style="height:2em" , , rowspan=3 , 8 , rowspan=3 , Re-elected in 1914.Lost re-election. , - style="height:2em" , , - style="height:2em" ! rowspan=9 , 9 , rowspan=9 align=left ,
Lawrence C. Phipps , rowspan=9 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=9 nowrap , Mar 4, 1919 –
Mar 3, 1931 , rowspan=6 , Elected in 1918. , rowspan=6 , 9 , , - style="height:2em" , , rowspan=6 , 9 , rowspan=2 , Elected in 1920.Died. , rowspan=2 nowrap , Mar 4, 1921 –
Mar 24, 1923 , rowspan=2 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=2 align=right ,
Samuel D. Nicholson ! rowspan=2 , 6 , - style="height:2em" , rowspan=4 , - style="height:2em" ,   , nowrap , Mar 24, 1923 –
May 17, 1923 , colspan=3 , ''Vacant'' , - style="height:2em" , Appointed to continue Nicholson's term.Retired. , nowrap , May 17, 1923 –
Nov 30, 1924 , , Democratic , align=right ,
Alva B. Adams ! 7 , - style="height:2em" , rowspan=2 , Elected to finish Nicholson's term.Lost renomination. , rowspan=2 nowrap , Dec 1, 1924 –
Mar 3, 1927 , rowspan=2 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=2 align=right ,
Rice W. Means ! rowspan=2 , 8 , - style="height:2em" , rowspan=3 , Re-elected in 1924.Retired. , rowspan=3 , 10 , , - style="height:2em" , , rowspan=6 , 10 , rowspan=3 , Elected in 1926.Died. , rowspan=3 nowrap , Mar 4, 1927 –
Aug 27, 1932 , rowspan=3 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=3 align=right ,
Charles W. Waterman ! rowspan=3 , 9 , - style="height:2em" , , - style="height:2em" ! rowspan=6 , 10 , rowspan=6 align=left ,
Edward P. Costigan , rowspan=6 , Democratic , rowspan=6 nowrap , Mar 4, 1931 –
Jan 3, 1937 , rowspan=6 , Elected in 1930.Retired. , rowspan=6 , 11 , rowspan=4 , - style="height:2em" ,   , nowrap , Aug 27, 1932 –
Sep 26, 1932 , colspan=3 , ''Vacant'' , - style="height:2em" , Appointed to continue Waterman's term.Lost election to finish Waterman's term. , nowrap , Sep 26, 1932 –
Dec 6, 1932 , , Democratic , align=right ,
Walter Walker ! 10 , - style="height:2em" , Elected to finish Waterman's term.Lost election to next term. , nowrap , Dec 7, 1932 –
Mar 3, 1933 , ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, align=right ,
Karl C. Schuyler ! 11 , - style="height:2em" , , rowspan=3 , 11 , rowspan=3 , Elected in 1932. , rowspan=5 nowrap , Mar 4, 1933 –
Dec 1, 1941 , rowspan=5 , Democratic , rowspan=5 align=right ,
Alva B. Adams ! rowspan=5 , 12 , - style="height:2em" , , - style="height:2em" ! rowspan=11 , 11 , rowspan=11 align=left ,
Edwin C. Johnson , rowspan=11 , Democratic , rowspan=11 nowrap , Jan 3, 1937 –
Jan 3, 1955 , rowspan=5 , Elected in 1936. , rowspan=5 , 12 , , - style="height:2em" , , rowspan=5 , 12 , rowspan=2 , Re-elected in 1938.Died. , - style="height:2em" , rowspan=3 , - style="height:2em" ,   , nowrap , Dec 1, 1941 –
Dec 20, 1941 , colspan=3 , ''Vacant'' , - style="height:2em" , rowspan=2 , Appointed to continue Adams's term. Elected in 1942 to finish Adams's term. , rowspan=8 nowrap , Dec 20, 1941 –
Jan 3, 1957 , rowspan=8 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=8 align=right ,
Eugene Millikin ! rowspan=8 , 13 , - style="height:2em" , rowspan=3 , Re-elected in 1942. , rowspan=3 , 13 , , - style="height:2em" , , rowspan=3 , 13 , rowspan=3 , Re-elected in 1944. , - style="height:2em" , , - style="height:2em" , rowspan=3 , Re-elected in 1948.Retired. , rowspan=3 , 14 , , - style="height:2em" , , rowspan=3 , 14 , rowspan=3 , Re-elected in 1950.Retired. , - style="height:2em" , , - style="height:2em" ! rowspan=9 , 12 , rowspan=9 align=left ,
Gordon Allott , rowspan=9 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=9 nowrap , Jan 3, 1955 –
Jan 3, 1973 , rowspan=3 , Elected in 1954. , rowspan=3 , 15 , , - style="height:2em" , , rowspan=3 , 15 , rowspan=3 , Elected in 1956.Lost re-election. , rowspan=3 nowrap , Jan 3, 1957 –
Jan 3, 1963 , rowspan=3 , Democratic , rowspan=3 align=right ,
John A. Carroll ! rowspan=3 , 14 , - style="height:2em" , , - style="height:2em" , rowspan=3 , Re-elected in 1960. , rowspan=3 , 16 , , - style="height:2em" , , rowspan=3 , 16 , rowspan=3 , Elected in 1962. , rowspan=6 nowrap , Jan 3, 1963 –
Jan 3, 1975 , rowspan=6 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=6 align=right ,
Peter H. Dominick ! rowspan=6 , 15 , - style="height:2em" , , - style="height:2em" , rowspan=3 , Re-elected in 1966.Lost re-election. , rowspan=3 , 17 , , - style="height:2em" , , rowspan=3 , 17 , rowspan=3 , Re-elected in 1968.Lost re-election. , - style="height:2em" , , - style="height:2em" ! rowspan=3 , 13 , rowspan=3 align=left ,
Floyd Haskell Floyd Kirk Haskell (February 7, 1916August 25, 1998) was an American lawyer and politician. A member of the Democratic Party, he served as a U.S. Senator from Colorado from 1973 to 1979. Early life and career Floyd Haskell was born in Morris ...
, rowspan=3 , Democratic , rowspan=3 nowrap , Jan 3, 1973 –
Jan 3, 1979 , rowspan=3 , Elected in 1972.Lost re-election. , rowspan=3 , 18 , , - style="height:2em" , , rowspan=3 , 18 , rowspan=3 , Elected in 1974. , rowspan=6 nowrap , Jan 3, 1975 –
Jan 3, 1987 , rowspan=6 , Democratic , rowspan=6 align=right ,
Gary Hart ! rowspan=6 , 16 , - style="height:2em" , , - style="height:2em" ! rowspan=6 , 14 , rowspan=6 align=left ,
William L. Armstrong , rowspan=6 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=6 nowrap , Jan 3, 1979 –
Jan 3, 1991 , rowspan=3 , Elected in 1978. , rowspan=3 , 19 , , - style="height:2em" , , rowspan=3 , 19 , rowspan=3 , Re-elected in 1980.Retired. , - style="height:2em" , , - style="height:2em" , rowspan=3 , Re-elected in 1984.Retired. , rowspan=3 , 20 , , - style="height:2em" , , rowspan=3 , 20 , rowspan=3 , Elected in 1986.Retired. , rowspan=3 nowrap , Jan 3, 1987 –
Jan 3, 1993 , rowspan=3 , Democratic , rowspan=3 align=right ,
Tim Wirth Timothy Endicott "Tim" Wirth (born September 22, 1939) is an American politician from Colorado who served as a Democrat in both the United States Senate (1987-1993) and the United States House of Representatives (1975–1987). He also served i ...
! rowspan=3 , 17 , - style="height:2em" , , - style="height:2em" ! rowspan=4 , 15 , rowspan=4 align=left ,
Hank Brown George Hanks "Hank" Brown (born February 12, 1940) is an American politician and lawyer from Colorado. He is a former Republican politician and U.S. Senator. He served as the 21st president of the University of Colorado system from April 2005 ...
, rowspan=4 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=4 nowrap , Jan 3, 1991 –
Jan 3, 1997 , rowspan=4 , Elected in 1990.Retired. , rowspan=4 , 21 , , - style="height:2em" , , rowspan=4 , 21 , rowspan=4 , Elected in 1992.Changed parties in 1995. , rowspan=7 nowrap , Jan 3, 1993 –
Jan 3, 2005 , rowspan=2 , Democratic , rowspan=7 align=right ,
Ben Nighthorse Campbell ! rowspan=7 , 18 , - style="height:2em" , rowspan=2 , - style="height:2em" , rowspan=5 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, - style="height:2em" ! rowspan=6 , 16 , rowspan=6 align=left ,
Wayne Allard Alan Wayne Allard (born December 2, 1943) is an American veterinarian and politician who served as a United States Representative (1991–1997) and United States Senator (1997–2009) from Colorado, as well as previously a Colorado State Senator ...
, rowspan=6 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=6 nowrap , Jan 3, 1997 –
Jan 3, 2009 , rowspan=3 , Elected in 1996. , rowspan=3 , 22 , , - style="height:2em" , , rowspan=3 , 22 , rowspan=3 , Re-elected in 1998.Retired. , - style="height:2em" , , - style="height:2em" , rowspan=3 , Re-elected in 2002.Retired. , rowspan=3 , 23 , , - style="height:2em" , , rowspan=4 , 23 , rowspan=3 , Elected in 2004.Resigned to become U.S. Secretary of the Interior. , rowspan=3 nowrap , Jan 3, 2005 –
Jan 20, 2009 , rowspan=3 , Democratic , rowspan=3 align=right ,
Ken Salazar ! rowspan=3 , 19 , - style="height:2em" , , - style="height:2em" ! rowspan=4 , 17 , rowspan=4 align=left ,
Mark Udall , rowspan=4 , Democratic , rowspan=4 nowrap , Jan 3, 2009 –
Jan 3, 2015 , rowspan=4 , Elected in 2008.Lost re-election. , rowspan=4 , 24 , rowspan=2 , - style="height:2em" , Appointed to finish Salazar's term. , rowspan=10 nowrap , Jan 21, 2009 –
Present , rowspan=10 , Democratic , rowspan=10 align=right ,
Michael Bennet ! rowspan=10 , 20 , - style="height:2em" , , rowspan=3 , 24 , rowspan=3 , Elected to a full term in 2010. , - style="height:2em" , , - style="height:2em" ! rowspan=3 , 18 , rowspan=3 align=left ,
Cory Gardner , rowspan=3 ,
Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...
, rowspan=3 nowrap , Jan 3, 2015 –
Jan 3, 2021 , rowspan=3 , Elected in 2014.Lost re-election. , rowspan=3 , 25 , , - style="height:2em" , , rowspan=3 , 25 , rowspan=3 , Re-elected in 2016. , - style="height:2em" , , - style="height:2em" ! rowspan=3 , 19 , rowspan=3 align=left ,
John Hickenlooper John Wright Hickenlooper Jr. (; born February 7, 1952) is an American politician serving as the junior United States senator from Colorado since 2021. A member of the Democratic Party, he served as the 42nd governor of Colorado from 2011 to 20 ...
, rowspan=3 , Democratic , rowspan=3 nowrap , Jan 3, 2021 –
Present , rowspan=3 , Elected in 2020. , rowspan=3 , 26 , , - style="height:2em" , , rowspan=3 , 26 , rowspan=3 , Re-elected in 2022. , - style="height:2em" , , - style="height:2em" , rowspan=2 colspan=5 , To be determined in the 2026 election. , rowspan=2 , 27 , , - style="height:2em" , , 27 , colspan=5 , To be determined in the 2028 election.


See also

* United States congressional delegations from Colorado * List of United States representatives from Colorado * Elections in Colorado


Notes


References

* {{People from Colorado United States Senators
Colorado Colorado (, other variants) is a state in the Mountain states, Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the wes ...