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The Political Graveyard: A Database of American History
Colorado: U.S. Senators

U.S. Senators from Colorado, 1876-2018 (May be incomplete!)
Jerome B. Chaffee 1876-79 Henry M. Teller 1876-82 Nathaniel P. Hill 1879-85 George M. Chilcott 1882-83 Horace A. W. Tabor 1883 Thomas M. Bowen 1883-89 Henry M. Teller 1885-1909 Edward O. Wolcott 1889-1901 Thomas M. Patterson 1901-07 Simon Guggenheim 1907-13 Charles J. Hughes, Jr. 1909-11 Charles S. Thomas 1913-21 John F. Shafroth 1913-19 Lawrence C. Phipps 1919-31 Samuel D. Nicholson 1921-23 Alva B. Adams 1923-24 Rice W. Means 1924-27 Charles W. Waterman 1927-32 Edward P. Costigan 1931-37 Walter Walker 1932 Karl C. Schuyler 1932-33 Alva B. Adams 1933-41 Edwin C. Johnson 1937-55 Eugene D. Millikin 1941-57 Gordon Allott 1955-73 John A. Carroll 1957-63 Peter H. Dominick 1963-75 Floyd K. Haskell 1973-79 Gary Hart 1975-87 William L. Armstrong 1979-91 Timothy E. Wirth 1987-93 Hank Brown 1991-97 Ben Nighthorse Campbell 1993-2005 A. Wayne Allard 1997-2009 Ken Salazar 2005-09 Mark E. Udall 2009- Michael F. Bennet 2009-

Events and Candidates (may be incomplete!)

  • 1911 Jan 11: Charles J. Hughes, Jr., died in office.
  • 1912 Nov 5: John F. Shafroth (Dem), elected; Clyde C. Dawson (Rep), defeated; Frank D. Catlin (Progressive), defeated; Mary E. Miller (Prohibition), defeated.
  • 1914 Nov 3: Charles S. Thomas (Dem), elected; Hubert Work (Rep), defeated; Benjamin Griffith (Progressive), defeated; J. C. Griffiths (Socialist), defeated; George J. Kindel (Kindel Commercial Equality), defeated.
  • 1918 Nov 5: Lawrence C. Phipps (Rep), elected; John F. Shafroth (Dem), defeated; P. A. Richardson (Prohibition), defeated.
  • 1920: Karl C. Schuyler (Rep), defeated in primary.
  • 1920 Nov 2: Samuel D. Nicholson (Rep), elected; Tully Scott (Dem), defeated; G. F. Stevens (Farmer-Labor), defeated; Charles S. Thomas (National), defeated.
  • 1923 Mar 24: Samuel D. Nicholson, died in office.
  • 1924 Nov 4: Lawrence C. Phipps (Rep), elected; Alva B. Adams (Dem), defeated; Morton Alexander (Farmer-Labor), defeated; Elwood Hills (Socialist), defeated; James A. Ayres (Workers), defeated.
  • 1924 Nov 4: Rice W. Means (Rep), elected; Morrison Shafroth (Dem), defeated; Charles T. Philip, defeated; Clyde Robinson, defeated.
  • 1926 Nov 2: Charles W. Waterman (Rep), elected; William E. Sweet (Dem), defeated; Morton Alexander (Farmer-Labor), defeated; Frank H. Rice (Socialist & Wet Modification & Commonwealth Land), defeated; James A. Ownbey (People's Constitutional Rights), defeated; James A. Ayres (Workers Communist), defeated.
  • 1930 Nov 4: Edward P. Costigan (Dem), elected; George H. Shaw (Rep), defeated; Morton Alexander (Socialist), defeated; H. H. Marrs (Farmer-Labor), defeated; James Allander (Communist), defeated; Frank H. Rice (Liberal), defeated; August Lutteken (Commonwealth), defeated.
  • 1932 Aug 27: Charles W. Waterman, died in office.
  • 1932 Sep 26: Walter Walker, appointed.
  • 1932 Nov 8: Alva B. Adams (Dem), elected; Karl C. Schuyler (Rep), defeated; Carle Whitehead (Socialist), defeated.
  • 1936: William E. Sweet (Dem), defeated in primary.
  • 1936 Nov 3: Edwin C. Johnson (Dem), elected; Raymond L. Sauter (Rep), defeated; Carle Whitehead (Socialist), defeated; George W. Carleton (National Union), defeated.
  • 1938 Nov 8: Alva B. Adams (Dem), elected; Archibald A. Lee (Rep), defeated; Carle Whitehead (Socialist), defeated; James Allander (Independent Progressive), defeated.
  • 1941 Dec 1: Alva B. Adams, died in office.
  • 1942 Nov 3: Edwin C. Johnson (Dem), elected; Ralph L. Carr (Rep), defeated; Carle Whitehead (Socialist), defeated; James Allander (Communist), defeated.
  • 1942 Nov 3: Eugene D. Millikin (Rep), elected; James A. Marsh (Dem), defeated; Lewis H. Tiley (Ind), defeated; Edgar P. Sherman (Socialist), defeated.
  • 1944 Nov 7: Eugene D. Millikin (Rep), elected; Barney L. Whatley (Dem), defeated; Carle Whitehead (Socialist), defeated.
  • 1948 Nov 2: Edwin C. Johnson (Dem), elected; Will F. Nicholson (Rep), defeated; Joe Gurule (Progressive), defeated; Carle Whitehead (Socialist), defeated.
  • 1950 Nov 7: Eugene D. Millikin (Rep), elected; John A. Carroll (Dem), defeated.
  • 1956 Nov 6: John A. Carroll (Dem), elected; Daniel I. J. Thornton (Rep), defeated.
  • 1962 Nov 6: Peter H. Dominick (Rep), elected; John A. Carroll (Dem), defeated; Charlotte Benson (Socialist Labor), defeated; Henry J. Olshaw (Ind), defeated; Thomas Leonard (Socialist Workers), defeated.
  • 1966 Nov 8: Gordon Allott (Rep), elected; Roy R. Romer (Dem), defeated; Walter Cranson, defeated.
  • 1968 Nov 5: Peter H. Dominick (Rep), elected; Stephen L. R. McNichols (Dem), defeated.
  • 1972 Nov 7: Floyd K. Haskell (Dem), elected; Gordon Allott (Rep), defeated; Secundino Salazar (La Raza Unida), defeated; Henry J. Olshaw (Independent American), defeated.
  • 1974 Nov 5: Gary Hart (Dem), elected; Peter H. Dominick (Rep), defeated; John M. King (Ind), defeated; Fred Hyskell (Prohibition), defeated; Henry J. Olshaw (American), defeated.
  • 1978: John Leonard Swigert, Jr. (Rep), defeated in primary.
  • 1978 Nov 7: William L. Armstrong (Rep), elected; Floyd K. Haskell (Dem), defeated; Veeder V. Dorn (United States), defeated; John Shue (National Statesman), defeated.
  • 1980 Nov 4: Gary Hart (Dem), elected; Mary E. Buchanan (Rep), defeated; Earl Higgerson (Statesman), defeated; Henry J. Olshaw (Ind), defeated.
  • 1984 Nov 6: William L. Armstrong (Rep), elected; Nancy E. Dick (Dem), defeated; Craig Green (Libertarian), defeated; David Martin (Socialist Workers), defeated; Earl Higgerson (Prohibition), defeated.
  • 1986 Nov 4: Timothy E. Wirth (Dem), elected; Kenneth B. Kramer (Rep), defeated; Michael M. Bush (Ind), defeated; Michael R. Chamberlain (Socialist Workers), defeated; Henry J. Olshaw (Ind), defeated; Calvin G. Dodge (Prohibition), defeated.
  • 1990 Nov 6: Hank Brown (Rep), elected; Josie Heath (Dem), defeated; John Heckman (Concerns of People), defeated; Earl F. Dodge (Prohibition), defeated.
  • 1992 Nov 3: Ben Nighthorse Campbell (Dem), elected; Terry Considine (Rep), defeated; Richard O. Grimes (Perot Independent), defeated; Matt Noah (Christian Pro-Life), defeated; Dan Winters (Ind), defeated; Hue Futch (Libertarian), defeated.
  • 1996 Nov 5: A. Wayne Allard (Rep), elected; Tom Strickland (Dem), defeated; Randy MacKenzie (Natural Law), defeated.
  • 1998 Nov 3: Ben Nighthorse Campbell (Rep), elected; Dottie Lamm (Dem), defeated; David S. Segal (Libertarian), defeated; Kevin Swanson (American Constitution), defeated; Jeffrey Peckman (Natural Law), defeated; John Heckman (Concerns of People), defeated; Gary Swing (U.S. Pacifist), defeated.
  • 2002 Nov 5: A. Wayne Allard (Rep), elected; Tom Strickland (Dem), defeated; Douglas Dayhorse Campbell (American Constitution), defeated; Rick Stanley (Libertarian), defeated; John Heckman (Concerns of People), defeated; Gary Cooper, defeated.
  • 2004 Nov 2: Ken Salazar (Dem), elected; Pete Coors (Rep), defeated; Douglas Dayhorse Campbell (American Constitution), defeated; Richard Randall (Libertarian), defeated; John R. Harris (Ind), defeated; Victor A. Good (Reform), defeated; Finn Gotaas, defeated.
  • 2009 Jan 20: Ken Salazar, resigned.
  • 2009 Jan 21: Michael F. Bennet, appointed.
  • 2010 Nov 2: Michael F. Bennet (Dem), elected.
  • 2016 Nov 8: Michael F. Bennet (Dem), elected.
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