Political party strength in Idaho
- Lieutenant Governor
- Secretary of State
- Attorney General
- State Auditor/State Controller
- State Treasurer
- Superintendent of Public Instruction
- Inspector of Mines
The table also indicates the historical party composition in the:
- State Senate
- State House of Representatives
- State delegation to the United States Senate
- State delegation to the United States House of Representatives
For years in which a presidential election was held, the table indicates which party's nominees received the state's electoral votes.
The parties are as follows: Democratic (D), –Populist fusion (D/P), Democratic–Populist–Silver Republican fusion, (D/P/SR), Democratic–Silver Republican fusion (D/SR), DemocraticIndependent (I), (P), PopulistSocialist (S), (SR), Silver RepublicanRepublican (R), and . a tie or coalition within a group of elected officials
|Year||Executive offices||State Legislature||United States Congress||Electoral College votes|
|Governor||Lieutenant Governor||Sec. of State||Atty. Gen.||Auditor/|
|Treasurer||Supt. of Pub. Inst.||Insp. Mines||State Senate||State House||U.S. Senator (Class II)||U.S. Senator (Class III)||U.S. House District 1||U.S. House District 2|
|1863||William H. Wallace (R)||no such office||William B. Daniels||no such office||John M. Bacon||Derrick S. Kenyon||no such office||no such office||no such bodies||no such offices||no such office||no electoral votes|
|1864||Caleb Lyon||C. DeWitt Smith||Benjamin F. Lamkin||Ephraim Smith||J. R. Chittenden||William H. Wallace (R)|
|1865||Horace G. Gilson||Edward Dexter Holbrook (D)|
|1866||David W. Ballard||S.R. Howlett||W. R. Bishop|
|1867||Horace B. Lane||Edward C. Sterling||Jacob K. Shafer (D)|
|William R. Bishop|
|1869||Edward J. Curtis|
|1871||Alexander H. Conner||John S. Gray||Samuel Augustus Merritt (D)|
|Thomas M. Bowen|
|Thomas W. Bennett (R)|
|1873||John Hailey (D)|
|1875||David P. Thompson||Joseph Perrault||Thomas W. Bennett (I)|
|1876||Mason Brayman||Stephen Southmyd Fenn (D)|
|1878||John P. Hoyt||Robert A. Sidebotham|
|1879||George Ainslie (D)|
|1880||John Baldwin Neil||Theodore Frelinghuysen Singiser (R)|
|1881||James L. Onderdonk|
|1883||John N. Irwin||Edward L. Curtis||Theodore Frelinghuysen Singiser (R)|
|1884||William M. Bunn||David P.B. Pride|
|1885||Edward A. Stevenson||Edward J. Curtis||D. P. B. Pride||Silas W. Moody||Joseph Perrault||John Hailey (D)|
|1887||Richard Z. Johnson||J. H. Wickersham||Charlies Himrod||Silas W. Moody||Fred Dubois (R)|
|1889||George Laird Shoup||Charles C. Stevenson|
|1890||George Laird Shoup (R)||N. B. Willey (R)|
|N. B. Willey (R)||John S. Gray (R)||George Laird Shoup (R)||William J. McConnell (R)||Willis Sweet (R)|
|1891||A. J. Pinkham (R)||George H. Roberts (R)||Silas W. Moody (R)||Frank R. Cofﬁn (R)||Joseph Harroun (R)||14R, 4D||31R, 5D||Fred Dubois (R)|
|1892||James Weaver and James G. Field (P) N|
|1893||William J. McConnell (R)||F. B. Willis (R)||J. F. Curtis (R)||George M. Parsons (R)||Frank C. Ramsey (R)||W. C. Hill (R)||B. B. Lower (R)||William S. Haskins||8D, 6R, 4P||20R, 9D, 7P|
|1895||F. J. Mills (R)||I. W. Garrett (R)||Charles Bunting (R)||C. A. Foresman (R)||E. H. Dewey (R)||10R, 5P, 2D, 1I||25R, 8P, 1D, 1I||Edgar Wilson (R)|
|1896||William Jennings Bryan and Arthur Sewall (D/P/SR) N|
|1897||Frank Steunenberg (D/P)||George F. Moore (D/P)||George Lewis (D/P)||Robert McFarland (D/P)||J. H. Anderson (D/P)||George H. Storer (D/P)||Louis Anderson (D/P)||Benjamin Hastings (D/P)||7D, 7P, 7R||17R, 16P, 15D||Henry Heitfeld (D/P)||James Gunn (P)|
|1899||J. H. Hutchinson (D/SR)||M.A. Patrie (R)||S. H. Hays (D)||Bartlett Sinclair (D)||L. C. Rice (D/P/SR)||Permeal French (D)||Jay A. Czizek (D/SR)||9R, 7D/P/SR, 3D, 2P||17D/P/SR, 14D, 12R, 6P||Edgar Wilson (SR)|
|1900||William Jennings Bryan and Adlai E. Stevenson I (D) N|
|1901||Frank W. Hunt (D)||Thomas F. Terrell (D)||Charles Bassett (D/SR)||Frank Martin (D)||E. W. Jones (D/SR)||J. J. Plummer (D)||Martin Jacobs (D/P/SR)||10D, 7R, 3P, 1SR||20R, 16D, 7SR, 6P||Fred T. Dubois (D)||Thomas L. Glenn (P)|
|1903||John T. Morrison (R)||James M. Stevens (R)||Will H. Gibson (R)||John A. Bagley (R)||Theo Turner (R)||Henry C. Coffin (R)||May L. Scott (R)||Robert N. Bell (R)||14R, 6D, 1I||36R, 13D||Weldon B. Heyburn (R)||Burton L. French (R)|
|1904||Theodore Roosevelt and Charles Fairbanks (R)|
|1905||Frank R. Gooding (R)||Burpee L. Steeves (R)||John Guheen (R)||Robert S. Bragaw (R)||19R, 2D||48R, 2D|
|1907||Ezra A. Burrell (R)||Robert Lansdon (R)||C. A. Hastings (R)||S. Belle Chamberlain (R)||15R, 6D||38R, 12D, 1I||William Edgar Borah (R)|
|1908||William Howard Taft and James Sherman (R)|
|1909||James H. Brady (R)||Lewis H. Sweetser (R)||D. C. McDougall (R)||S. D. Taylor (R)||F. Cushing Moore (R)||13R, 10D||44R, 9D||Thomas Ray Hamer (R)|
|1911||James H. Hawley (D)||Wilford L. Gifford (R)||O. V. Allen (R)||Grace M. Shepherd (R)||Robert N. Bell (R)||14R, 9D||34R, 25D||Burton L. French (R)|
|1912||Kirtland I. Perky (D)||Woodrow Wilson and Thomas R. Marshall (D)|
|1913||John M. Haines (R)||Herman H. Taylor (R)||Joseph H. Peterson (R)||Fred L. Huston (R)||21R, 3D||56R, 4D||James H. Brady (R)||Burton L. French (R)||Addison T. Smith (R)|
|1914||E. H. Dewey (R)|
|1915||Moses Alexander (D)||George R. Barker (R)||John W. Eagleson (R)||Bernice McCoy (R)||19R, 11D, 2Pr, 1S||32R, 28D, 1Pr||Robert M. McCracken (R)|
|1917||Ernest L. Parker (D)||William T. Dougherty (D)||T. A. Walters (D)||Clarence Van Deusen (D)||Ethel E. Redfield (R)||21D, 16R||36D, 29R||Burton L. French (R)|
|1918||John F. Nugent (D)|
|1919||D. W. Davis (R)||Charles C. Moore (R)||Robert O. Jones (R)||Roy L. Black (R)||Edward G. Gallett (R)||29R, 12D||46R, 18D||Burton L. French (R)||Addison T. Smith (R)|
|1920||Warren G. Harding and Calvin Coolidge (R)|
|1921||Daniel F. Banks (R)||Stewart Campbell (R)||39R, 5D||51R, 3D||Frank R. Gooding (R)|
|1923||Charles C. Moore (R)||H. C. Baldridge (R)||F. A. Jeter (R)||A. H. Conner (R)||Elizabeth Russum (R)||25R, 14D, 5Pr||37R, 22D, 6Pr|
|1924||Calvin Coolidge and Charles Dawes (R)|
|1925||32R, 7Pr, 5D||45R, 12Pr, 5D|
|1927||H. C. Baldridge (R)||O. E. Hailey (R)||Fred E. Lukens (R)||Frank L. Stephan (R)||Byron Defenbach (R)||Mabelle McConnell Lyman (R)||29R, 11D, 4Pr||52R, 8Pr, 7D, 1I|
|1928||John W. Thomas (R)||Herbert Hoover and Charles Curtis (R)|
|1929||W. B. Kinne||W. D. Gillis (R)||Myrtle R. Davis (R)||32R, 12D||50R, 9D|
|O. E. Hailey (R)|
|1931||C. Ben Ross (D)||G. P. Mix (D)||Fred J. Babcock (R)||George Barrett (R)||23R, 21D||43R, 27D|
|1932||Franklin D. Roosevelt and John Nance Garner (D)|
|1933||George E. Hill (D)||Franklin Girard (D)||Bert H. Miller (D)||Harry C. Parsons (D)||Myrtle P. Enking (D)||John W. Condie (D)||W. H. Simons (D)||35D, 9R||59D, 4R||James P. Pope (D)||Compton I. White (D)||Thomas C. Coffin (D)|
|1935||G. P. Mix (D)||Arthur Campbell (D)||36D, 8R||53D, 6R||David Worth Clark (D)|
|1937||Barzilla W. Clark (D)||Charles C. Gossett (D)||Ira H. Masters (D)||J. W. Taylor (D)||33D, 11R||50D, 9R|
|1939||C. A. Bottolfsen (R)||Donald S. Whitehead (R)||George H. Curtis (D)||Calvin W. Wright (D)||27R, 17D||39R, 20D||David Worth Clark (D)||Henry C. Dworshak (R)|
|1940||John W. Thomas (R)||Franklin D. Roosevelt and Henry Wallace (D)|
|1941||Chase A. Clark (D)||Charles C. Gossett (D)||Bert H. Miller (D)||C. E. Roberts (D)||23D, 21R||38D, 21R|
|1943||C. A. Bottolfsen (R)||Edwin Nelson (R)||31R, 13D||32R, 27D|
|1944||Acel H. Chatburn (R)||Franklin D. Roosevelt and Harry S. Truman (D)|
|1945||Charles C. Gossett (D)||Arnold Williams (D)||Ira H. Masters (D)||Frank Langley (D)||Ernest G. Hansen (D)||Ruth G. Moon (D)||G. C. Sullivan (D)||24R, 20D||30R, 29D||Glen H. Taylor (D)|
|Arnold Williams (D)||A. R. McCabe (D)||Charles C. Gossett (D)|
|1946||Henry C. Dworshak (R)|
|1947||C. A. Robins (R)||Donald S. Whitehead (R)||Cy Price (R)||Robert Ailshie (R)||N. P. Nielson (R)||Lela D. Painter (R)||Alton B. Jones (R)||George A. McDowell (R)||31R, 13D||42R, 17D||Abe M. Goff (R)||John C. Sanborn (R)|
|Robert E. Smylie (R)|
|1948||Harry S. Truman and Alben W. Barkley (D)|
|1949||24D, 20R||35R, 24D||Bert H. Miller (D)||Compton I. White (D)|
|1950||Henry C. Dworshak (R)|
|1951||Leonard B. Jordan (R)||Edson H. Deal (R)||Ira H. Masters (D)||29R, 15D||36R, 23D||Herman Welker (R)||John Travers Wood (R)||Hamer H. Budge (R)|
|1952||Margaret Gilbert (R)||Dwight Eisenhower and Richard Nixon (D)|
|1953||33R, 11D||45R, 14D||Gracie Pfost (D)|
|1955||Robert E. Smylie (R)||J. Berkeley Larsen (R)||Graydon W. Smith (R)||Ruth G. Moon (D)||24R, 20D||36R, 23D|
|1956||James H. Young (R)|
|1957||Rulon A. Swensen (R)||25D, 19R||32R, 27D||Frank Church (D)|
|1958||O. T. Hansen (R)|
|1959||W. E. Drevlow (D)||Arnold Williams (D)||Frank L. Benson (D)||Joe R. Williams (D)||Rulon A. Swensen (R)||D. F. Engelking (D)||George D. Fletcher (D)||27D, 17R||35D, 24R|
|1960||Richard Nixon and Henry Cabot Lodge, Jr. (R) N|
|1961||23R, 21D||31R, 28D||Ralph R. Harding (D)|
|1962||Leonard B. Jordan (R)|
|1963||Allan Shepard (R)||Marjorie Ruth Moon (D)||O. T. Hansen||34R, 29D||Compton I. White, Jr. (D)|
|1964||Lyndon B. Johnson and Hubert Humphrey (D)|
|1965||25R, 19D||42R, 37D||George V. Hansen (R)|
|1966||Louis E. Clapp (D)|
|1967||Don Samuelson (R)||Jack M. Murphy (R)||Edson H. Deal (R)||22R, 13D||38R, 32D||James A. McClure (R)|
|Pete T. Cenarrusa (R)|
|1968||Richard Nixon and Spiro Agnew (R)|
|1969||Robert M. Robson (R)||20R, 15D||Orval H. Hansen (R)|
|1971||Cecil D. Andrus (D)||W. Anthony Park (D)||W. Carl Griner||19R, 16D||41R, 29D|
|1973||23R, 12D||51R, 19D||James A. McClure (R)||Steve Symms (R)|
|1974||no such office|
|1975||John V. Evans (D)||Wayne L. Kidwell (R)||Roy F. Truby (D)||21R, 14D||43R, 27D||George V. Hansen (R)|
|1976||Gerald Ford and Bob Dole (R) N|
|1977||20R, 15D||48R, 22D|
|John V. Evans (D)||William J. Murphy (D)|
|1979||Phil Batt (R)||David H. Leroy (R)||Jerry L. Evans (R)||19R, 16D||50R, 20D|
|1980||Ronald Reagan and George H. W. Bush (R)|
|1981||23R, 12D||56R, 14D||Steve Symms (R)||Larry Craig (R)|
|1983||David H. Leroy (R)||Jim Jones (R)||21R, 14D||51R, 19D|
|1985||28R, 14D||67R, 17D||Richard H. Stallings (D)|
|1987||Cecil D. Andrus (D)||Butch Otter (R)||Lydia Justice-Edwards (R)||26R, 16D||64R, 20D|
|1988||George H. W. Bush and Dan Quayle (R)|
|J. D. Williams (D)|
|1991||Larry EchoHawk (D)||21R, 21D||56R, 28D||Larry Craig (R)||Larry LaRocco (D)|
|1992||George H. W. Bush and Dan Quayle (R) N|
|1993||23R, 12D||50R, 20D||Dirk Kempthorne (R)||Mike Crapo (R)|
|1995||Phil Batt (R)||Alan G. Lance (R)||Anne C. Fox (R)||27R, 8D||57R, 13D||Helen P. Chenoweth (R)|
|1996||Bob Dole and Jack Kemp (R) N|
|1997||30R, 5D||59R, 11D|
|1999||Dirk Kempthorne (R)||Ron Crane (R)||Marilyn Howard (D)||31R, 4D||58R, 12D||Mike Crapo (R)||Mike Simpson (R)|
|2000||George W. Bush and Dick Cheney (R)|
|2001||Jack Riggs (R)||32R, 3D||61R, 9D||Butch Otter (R)|
|Keith Johnson (R)|
|2003||Jim Risch (R)||Ben Ysursa (R)||Lawrence Wasden (R)||28R, 7D||54R, 16D|
|Jim Risch (R)||Mark Ricks (R)|
|2007||Butch Otter (R)||Jim Risch (R)||Donna Jones (R)||Tom Luna (R)||51R, 19D||Bill Sali (R)|
|2008||John McCain and Sarah Palin (R) N|
|2009||Brad Little (R)||52R, 18D||Jim Risch (R)||Walt Minnick (D)|
|2011||57R, 13D||Raul Labrador (R)|
|2012||Mitt Romney and Paul Ryan (R) N|
|2013||Brandon D. Woolf (R)|
|2015||Lawerence Denney (R)||Sherri Ybarra (R)||56R, 14D|
|2016||Donald Trump and Mike Pence (R)|
|2017||29R, 6D||59R, 11D|
|Year||Governor||Lieutenant Governor||Sec. of State||Atty. Gen.||Auditor/|
|Treasurer||Supt. of Pub. Inst.||Insp. Mines||State Senate||State House||U.S. Senator (Class II)||U.S. Senator (Class III)||U.S. House District 1||U.S. House District 2||Electoral College votes|
|Executive offices||State Legislature||United States Congress|
- Office renamed per 1994 amendment to state Constitution.
- Territorial governor appointed by President Abraham Lincoln.
- Secretary of Idaho Territory.
- Delegate of Idaho Territory.
- Territorial governor appointed by President Andrew Johnson.
- Territorial governor appointed by President Ulysses S. Grant.
- Territorial governor appointed by President Rutherford B. Hayes.
- Territorial governor appointed by President Chester A. Arthur.
- Territorial governor appointed by President Grover Cleveland.
- Territorial governor appointed by President Benjamin Harrison.
- Resigned to take an elected seat in the United States Senate.
- As lieutenant governor, acted as governor for unexpired term.
- A Democrat, Alexander Mayhew, was chosen as President Pro Tempore in a coalition of Democrats and Populists and organized the chamber.
- Elected on a fusion ticket that was also endorsed by the Populist Party.
- A coalition of Democrats and Populists elected a Populist, Joseph C. Rich, as President Pro Tempore and organized the chamber.
- A coalition of Democrats and Populists elected a Democrat, David L. Evans, as Speaker and organized the chamber.
- Elected on a fusion ticket that was also endorsed by the Silver Republican Party.
- Elected on a fusion ticket that was also endorsed by the Populist Party and the Silver Republican Party.
- A coalition of Republicans and Populists elected a Republican, Frank R. Gooding, as President Pro Tempore, and organized the chamber.
- A coalition of Democrats, Populists, and Silver Republicans elected a Democrat, David L. Evans, as Speaker and organized the chamber.
- A coalition of Democrats, Populists, and Silver Republicans elected a Populist, J.W. Ballantine, as President Pro Tempore and organized the chamber.
- A coalition of Democrats, Populists, and Silver Republicans elected a Democrat, Glenn P. McKinley, as Speaker and organized the chamber.
- Died in office.
- Elected state-wide at-large on a general ticket.
- Appointed to fill vacancy.
- Resigned so that Lieutenant Governor Arnold Williams would succeed him and then appoint him to the United States Senate.
- Initially appointed to fill vacancy; later elected in his own right.
- Resigned to become United States Secretary of the Interior.
- Inspector of Mines became appointive position effective January 1971.
- Office abolished by state legislature, with duties delegated to the state Department of Labor and Industrial Services, effective July 1, 1974.
- As lieutenant governor, acted as governor for unexpired term, and was later elected in his own right.
- Resigned to take an elected seat in the United States House of Representatives.
- The Republican Lt. Governor, Butch Otter, broke the tie to keep a Republican, Mike Crapo, as President Pro Tempore. The membership of committees, however, was split evenly between the parties.
- Appointed by governor to fill vacancy and confirmed by state Senate.
- Resigned following election to United States Senate.