Colorado U.S. Senators (2026)
CO · U.S. Senate Delegation
Joined the Union
August 1, 1876
Population (Est.)
5,877,610
Current U.S. Senators
Delegation Voting Summary
119th CongressAgreement Rate
97.4%
John Hickenlooper and Michael Bennet voted the same way on 777 of 798 shared votes
Both are Democrats
John Hickenlooper
Senior Senator
Party Unity
94.5%
Missed Votes
1.1%
880 votes cast of 890 roll calls
Michael Bennet
Junior Senator
Party Unity
96.3%
Missed Votes
9.2%
808 votes cast of 890 roll calls
Former Senators from Colorado
All 35 former U.S. senators who represented Colorado, most recent first.
- Cory Gardner 2015 – 2021
- Mark Udall 2009 – 2015
- Kenneth Salazar 2005 – 2009
- A. Allard 1997 – 2009
- Ben Campbell 1993 – 2005
- Hank Brown 1991 – 1997
- Timothy Wirth 1987 – 1993
- William Armstrong 1979 – 1991
- Gary Hart 1975 – 1987
- Floyd Haskell 1973 – 1979
- Peter Dominick 1963 – 1975
- Gordon Allott 1955 – 1973
- John Carroll 1957 – 1963
- Eugene Millikin 1941 – 1957
- Edwin Johnson 1937 – 1955
- Alva Adams 1923 – 1941
- Edward Costigan 1931 – 1937
- Karl Schuyler 1932 – 1933
- Walter Walker 1932
- Charles Waterman 1927 – 1932
- Lawrence Phipps 1919 – 1931
- Rice Means 1924 – 1927
- Samuel Nicholson 1921 – 1923
- Charles Thomas 1913 – 1921
- John Shafroth 1913 – 1919
- Simon Guggenheim 1907 – 1913
- Charles Hughes, Jr. 1909 – 1911
- Henry Teller 1876 – 1909
- Thomas Patterson 1901 – 1907
- Edward Wolcott 1889 – 1901
- Thomas Bowen 1883 – 1889
- Nathaniel Hill 1879 – 1885
- Horace Tabor 1883
- George Chilcott 1882 – 1883
- Jerome Chaffee 1876 – 1879