History / Congress

U.S. Senate seat, Colorado (class 2)

25 members have held this seat since Nov 15, 1876. Now: John W. Hickenlooper D.

Holders
25
17 R · 8 D
Longest tenure
12 years
Gordon Llewellyn Allott
Current
5.8 years
John W. Hickenlooper, since Jan 3, 2021
history/seat/co-sen-2Every holder, newest first
+25
18801900192019401960198020002020Henry Moore Teller · 1876-11-15 – 1877-03-04 · RepublicanHenry Moore Teller · 1877-12-05 – 1882-04-18 · RepublicanHorace Austin Warner Tabor · 1883-01-27 – 1883-03-04 · RepublicanThomas Mead Bowen · 1883-03-04 – 1889-03-04 · RepublicanEdward Oliver Wolcott · 1889-12-02 – 1895-03-04 · RepublicanEdward Oliver Wolcott · 1895-12-02 – 1901-03-04 · RepublicanThomas MacDonald Patterson · 1901-12-02 – 1907-03-04 · DemocratSimon Guggenheim · 1907-12-02 – 1913-03-04 · RepublicanJohn Franklin Shafroth · 1913-04-07 – 1919-03-04 · DemocratLawrence Cowle Phipps · 1919-05-19 – 1925-03-04 · RepublicanLawrence Cowle Phipps · 1925-12-07 – 1931-03-04 · RepublicanEdward Prentiss Costigan · 1931-12-07 – 1937-01-04 · DemocratEdwin Carl Johnson · 1937-01-05 – 1943-01-04 · DemocratEdwin Carl Johnson · 1943-01-06 – 1955-01-04 · DemocratGordon Llewellyn Allott · 1955-01-05 – 1967-01-04 · RepublicanGordon Llewellyn Allott · 1967-01-10 – 1973-01-04 · RepublicanWilliam Lester Armstrong · 1979-01-15 – 1991-01-04 · RepublicanWayne A. Allard · 1997-01-07 – 2003-01-04 · RepublicanWayne A. Allard · 2003-01-07 – 2009-01-04 · RepublicanMark Udall · 2009-01-06 – 2015-01-04 · DemocratCory Gardner · 2015-01-06 – 2021-01-04 · RepublicanGeorge Miles Chilcott · 1882-04-17 – 1883-01-28 · RepublicanFloyd Kirk Haskell · 1973-01-03 – 1979-01-04 · DemocratGeorge Hanks Brown · 1991-01-03 – 1997-01-04 · RepublicanJohn W. Hickenlooper · 2021-01-03 – present · Democrat
John W. Hickenlooper D
Jan 3, 2021 – present · 5.8 years
Cory Gardner R
Jan 6, 2015 – Jan 4, 2021 · 6 years
Mark Udall D
Jan 6, 2009 – Jan 4, 2015 · 6 years
Wayne A. Allard R
Jan 7, 2003 – Jan 4, 2009 · 6 years
Wayne A. Allard R
Jan 7, 1997 – Jan 4, 2003 · 6 years
George Hanks Brown R
Jan 3, 1991 – Jan 4, 1997 · 6 years
William Lester Armstrong R
Jan 15, 1979 – Jan 4, 1991 · 12 years
Floyd Kirk Haskell D
Jan 3, 1973 – Jan 4, 1979 · 6 years
Gordon Llewellyn Allott R
Jan 10, 1967 – Jan 4, 1973 · 6 years
Gordon Llewellyn Allott R
Jan 5, 1955 – Jan 4, 1967 · 12 years
Edwin Carl Johnson D
Jan 6, 1943 – Jan 4, 1955 · 12 years
Edwin Carl Johnson D
Jan 5, 1937 – Jan 4, 1943 · 6 years
Edward Prentiss Costigan D
Dec 7, 1931 – Jan 4, 1937 · 5.1 years
Lawrence Cowle Phipps R
Dec 7, 1925 – Mar 4, 1931 · 5.2 years
Lawrence Cowle Phipps R
May 19, 1919 – Mar 4, 1925 · 5.8 years
John Franklin Shafroth D
Apr 7, 1913 – Mar 4, 1919 · 5.9 years
Simon Guggenheim R
Dec 2, 1907 – Mar 4, 1913 · 5.3 years
Thomas MacDonald Patterson D
Dec 2, 1901 – Mar 4, 1907 · 5.3 years
Edward Oliver Wolcott R
Dec 2, 1895 – Mar 4, 1901 · 5.3 years
Edward Oliver Wolcott R
Dec 2, 1889 – Mar 4, 1895 · 5.3 years
Thomas Mead Bowen R
Mar 4, 1883 – Mar 4, 1889 · 6 years
Horace Austin Warner Tabor R
Jan 27, 1883 – Mar 4, 1883 · 36 days
George Miles Chilcott R
Apr 17, 1882 – Jan 28, 1883 · 9 months
Henry Moore Teller R
Dec 5, 1877 – Apr 18, 1882 · 4.4 years
Henry Moore Teller R
Nov 15, 1876 – Mar 4, 1877 · 4 months

Dates are from the @unitedstates congress-legislators project. Consecutive terms of one person are merged.