Statistics show a close division among Arizona's 3,665,316 active registered voters as of October 2017: Republican 34.61% (1,268,748), Party-Not-Designated/Other 34.13% (1,250,879), Democratic 30.19% (1,106,675), Libertarian 0.87% (31,941), and Green 0.19% (7,073)  
State politics are still largely controlled by Republicans, but beginning to change with a handful of Democratic elected officials following the 2018 elections. The following table indicates the political parties of elected officials in Arizona:
- Secretary of State
- Attorney General
- State Treasurer
- Superintendent of Public Instruction
- State Mine Inspector
The table also indicates the historical party composition in the:
- State Senate
- State House of Representatives
- State Corporation Commission
- State delegation to the U.S. Senate
- State delegation to the U.S. 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.
|Year||Executive offices||State Legislature||Corp. Comm.||United States Congress||Electoral College votes|
|Governor||Secretary of State||Attorney General||Treasurer||Supt. of Pub. Inst.||Mine Inspector||State Senate||State House||U.S. Senator (Class I)||U.S. Senator (Class III)||U.S. House|
|1863||John A. Gurley (R) ||Richard Cunningham McCormick (R)||no such offices||Charles Debrille Poston (R)||no electoral votes|
|John Noble Goodwin (R)  |
|1864||Coles Bashford (R) |
|1865||John Noble Goodwin (R)|
|Richard Cunningham McCormick (R)  ||James P. T. Carter (R)|
|1867||Coles Bashford (I)|
|James P. T. Carter (R) (act)|
|1869||Coles Bashford (R) ||Granville Henderson Oury (D) ||Richard Cunningham McCormick (U)|
|Anson P.K. Safford (R) |
|1872||J. E. McCaffry |
|1875||Hiram Sanford Stevens (D)|
|1876||John Philo Hoyt (R)|
|John Philo Hoyt (R) ||John Jay Gosper (R)|
|John C. Frémont (R)   |
|1879||John Goulder Campbell (D)|
|1881||Granville Henderson Oury (D)|
|John Jay Gosper (R) (act)|
|Frederick Augustus Tritle (R)  ||Hiram M. Van Arman (R)|
|1884||Clark Churchill |
|1885||Curtis Coe Bean (R)|
|C. Meyer Zulick (D) ||James A. Bayard (D)|
|1887||Briggs Goodrich ||Marcus A. Smith (D)|
|1888||John A. Rush |
|1889||Clark Churchill |
|Lewis Wolfley (R)  ||Oakes Murphy (R)|
|John N. Irwin (R)  |
|1892||William Herring |
|Oakes Murphy (R) ||Nathan A. Morford (R)|
|1893||John C. Herndon |
|L. C. Hughes (D)  ||Charles Morelle Bruce (D)||Francis J. Heney (R) |
|1895||Thomas D. Satterwhite ||Oakes Murphy (R)|
|1896||J. F. Wilson |
|Charles Morelle Bruce (D) (act)|
|Benjamin Joseph Franklin (D) |
|1897||Marcus A. Smith (D)|
|Myron H. McCord (R)  ||Charles H. Akers (R)|
|1898||C. M. Frazier |
|Oakes Murphy (R)  ||Charles F. Ainsworth |
|1899||John Frank Wilson (D)|
|1901||Marcus A. Smith (D)|
|1902||Isaac T. Stoddard (R)||Edmund W. Wells (R) |
|Alexander Oswald Brodie (R)  |
|1903||John Frank Wilson (D)|
|1904||William Francis Nichols (R)||Joseph Henry Kibbey (R) |
|1905||E. S. Clark ||Marcus A. Smith (D)|
|William F. Nichols (R) (act)|
|Joseph Henry Kibbey (R) |
|1908||John H. Page (R)|
|1909||Ralph H. Cameron (R)|
|Richard Elihu Sloan (R) ||George U. Young (R)|
|1910||John B. Wright |
|1912||George W. P. Hunt (D)||Sidney Preston Osborn (D)||George Purdy Bullard (D)||David F. Johnson (D)||Charles O. Case (D)||G. H. Bolin (D)||15D, 4R||31D, 4R||Henry F. Ashurst (D)||Marcus A. Smith (D)||Carl Hayden (D)||Woodrow Wilson and Thomas R. Marshall (D)|
|1915||Wiley E. Jones (D)||Mit Simms (D)||18D, 1R||35D|
|1917||Thomas Edward Campbell (R) ||David F. Johnson (D)||14D, 5R||31D, 4R|
|George W. P. Hunt (D)|
|1919||Thomas Edward Campbell (R)||Mit Simms (D)||Harry S. Ross (D)||26D, 9R|
|1920||Warren G. Harding and Calvin Coolidge (R)|
|1921||Ernest R. Hall (R)||W. J. Galbraith (R)||Raymond R. Earhart (D)||Elsie Toles (R)||John F. White (R)||10R, 9D||20D, 18R||Ralph H. Cameron (R)|
|1923||George W. P. Hunt (D)||James H. Kerby (D)||John W. Murphy (D)||Wayne Hubbs (D)||Charles O. Case (D)||Tom C. Foster (D)||18D, 1R||41D, 6R|
|1924||Calvin Coolidge and Charles G. Dawes (R)|
|1925||Vernon S. Wright (D)||17D, 2R|
|1927||J. C. Callaghan (D)||43D, 9R||Carl Hayden (D)||Lewis W. Douglas  (D)|
|1928||K. Berry Peterson (D)||Herbert Hoover and Charles Curtis (R)|
|1929||John Calhoun Phillips (R)||J. C. Callaghan (D) ||Charles R. Price (D)||37D, 17R|
|1930||I. P. "Ike" Fraizer (R) |
|1931||George W. P. Hunt (D)||Scott White (D)||Mit Simms (D)||18D, 1R||52D, 12R|
|1932||Franklin D. Roosevelt and John Nance Garner (D)|
|1933||Benjamin Baker Moeur (D)||James H. Kerby (D)||Arthur T. La Prade (D)||W. M. Cox (D)||Herman E. Hendrix (D)||19D||59D, 4R||Isabella Selmes Greenway  (D)|
|1935||John L. Sullivan (D)||Mit Simms (D)||18D, 1R||51D|
|1937||Rawghlie Clement Stanford (D)||Joe Conway (D)||Harry M. Moore (D)||19D||50D, 1R||John R. Murdock (D)|
|1939||Robert Taylor Jones (D)||Harry M. Moore (D) ||William G. Petersen (D)||51D, 1R|
|1940||Franklin D. Roosevelt and Henry A. Wallace (D)|
|1941||Sidney Preston Osborn (D) ||Joe Hunt (D)||E. D. Ring (D)||53D||Ernest McFarland (D)|
|Dan Edward Garvey (D) |
|1943||James D. Brush (D)||58D||2D|
|1944||John L. Sullivan (D)||Alva E. Weaver (D) ||Franklin D. Roosevelt and Harry S. Truman (D)|
|1945||William T. Brooks (D)||Clifford J. Murdock (D)||57D, 1R|
|1947||Mit Simms (D)||Nolan D. Pulliam (D)||53D, 5R|
|1948||Evo Anton DeConcini (D)|
|Dan Edward Garvey (D) ||Curtis Williams (D)||Harry S. Truman and Alben W. Barkley (D)|
|1949||Wesley Bolin (D)||Fred O. Wilson (D)||J. W. Kelly (D)||Marion Brooks (D)||52D, 7R|
|1951||John Howard Pyle (R)||E. T. Williams, Jr. (D)||61D, 10R|
|1952||Dwight D. Eisenhower and Richard Nixon (R)|
|1953||Ross F. Jones (R)||J. W. Kelly (D)||Edward Massey (D)||15D, 4R||50D, 30R||Barry Goldwater (R)||1D, 1R|
|1955||Ernest McFarland (D)||Robert Morrison (D)||E. T. Williams, Jr. (D)||Cliff Harkins (D)||26D, 2R||61D, 19R|
|1957||J. W. Kelly (D)||Marion Brooks (D)||57D, 23R|
|1959||Paul Fannin (R)||H. Y. Sprague (D)||Wilburn W. Dick (D)||R. V. Hersey (D)||27D, 1R||55D, 25R|
|1960||Wade Church (D)||John Quebedeaux (R) ||Richard Nixon and Henry Cabot Lodge, Jr. (R) N|
|1961||Robert Pickrell (R)||J. W. Kelly (D)||24D, 4R||52D, 28R|
|1963||Milton J. Husky (D)||48D, 32R||2D, 1R|
|1964||Barry Goldwater and William E. Miller (R) N|
|1965||Samuel Pearson Goddard, Jr. (D)||Darrell F. Smith (R)||Bob Kennedy (D)||Sarah Folsom (R)||Verne C. McCutchan (R)||26D, 2R||45D, 35R||Paul Fannin (R)|
|1967||Jack Richard Williams (R) ||Charles H. Garland (R)||16R, 14D||33R, 27D||2R, 1D|
|1968||Richard Nixon and Spiro Agnew (R)|
|1969||Gary K. Nelson (R)||Morris A. Herring (R)||Weldon P. Shofstall (R) ||17R, 13D||34R, 26D||Barry Goldwater (R)|
|1971||Ernest Garfield (R)||18R, 12D|
|1973||Bart Fleming (R) ||38R, 22D||3R, 1D|
|1974||N. Warner Lee (R)|
|1975||Raúl Héctor Castro (D) ||Bruce Babbitt (D)||Carolyn Warner (D)||Bert C. Romero (D)||18D, 12R||33R, 27D|
|1976||Gerald Ford and Bob Dole (R) N|
|1977||Verne C. McCutchan (R) ||16D, 14R||38R, 22D||Dennis DeConcini (D)||2R, 2D|
|Wesley Bolin (D)  ||Rose Perica Mofford (D) |
|Bruce Babbitt (D) ||Jack LaSota (D) ||Ted M. Martinez (D) |
|1979||Robert K. Corbin (R)||Clark Dierks (R)||James H. McCutchan (R)||16R, 14D||42R, 18D|
|1980||Ronald Reagan and George H. W. Bush (R)|
|1983||Ray Rottas (R)||18R, 12D||39R, 21D||3R, 2D|
|1985||38R, 22D||4R, 1D|
|1987||Evan Mecham (R) ||C. Diane Bishop (D)||19R, 11D||36R, 24D||John McCain (R)|
|1988||George H. W. Bush and Dan Quayle (R)|
|Rose Perica Mofford (D) ||James Shumway (D) |
|1989||Douglas K. Martin (R)||17R, 13D||34R, 26D|
|1991||Fife Symington (R)||Richard D. Mahoney (D)||Grant Woods (R)||Tony West (R)||17D, 13R||33R, 27D|
|1992||George H. W. Bush and Dan Quayle (R) N|
|1993||18R, 12D||35R, 25D||3R, 3D|
|1995||Jane Dee Hull (R)||Lisa Graham Keegan (R) ||19R, 11D||38R, 22D||Jon Kyl (R)||5R, 1D|
|1996||Bill Clinton and Al Gore (D)|
|Jane Dee Hull (R) ||Betsey Bayless (R)|
|1999||Janet Napolitano (D)||Carol Springer (R)||16R, 14D||40R, 20D|
|2000||George W. Bush and Dick Cheney (R)|
|2001||Jaime Molera (R) ||15R, 15D ||36R, 24D|
|2003||Janet Napolitano (D) ||Jan Brewer (R)||Terry Goddard (D)||David Petersen (R)||Tom Horne (R)||17R, 13D||39R, 21D||6R, 2D|
|2005||18R, 12D||38R, 22D|
|2006||Elliott Hibbs (R) ||39R, 21D|
|2007||Dean Martin (R)||Joe Hart (R)||17R, 13D||33R, 27D||5R||4R, 4D|
|2008||John McCain and Sarah Palin (R) N|
|2009||18R, 12D||36R, 24D||3R, 2D||5D, 3R|
|Jan Brewer (R) ||Ken Bennett (R) |
|2011||Tom Horne (R)||Doug Ducey (R)||John Huppenthal (R)||21R, 9D||40R, 20D||5R, 3D|
|2012||Mitt Romney and Paul Ryan (R) N|
|2013||17R, 13D||36R, 24D||5R||Jeff Flake (R)||5D, 4R|
|2015||Doug Ducey (R)||Michele Reagan (R)||Mark Brnovich (R)||Jeff DeWit (R) ||Diane Douglas (R)||5R, 4D|
|2016||18R, 12D||Donald Trump and Mike Pence (R)|
|2017||17R, 13D||35R, 25D|
|Eileen Klein (R) ||Jon Kyl (R)|
|2019||Katie Hobbs (D)||Kimberly Yee (R)||Kathy Hoffman (D)||16R, 13D, 1||28R, 26D, 2||Kyrsten Sinema (D)||5D, 4R|
|Year||Governor||Secretary of State||Attorney General||Treasurer||Supt. of Pub. Inst.||Mine Inspector||State Senate||State House||Corp. Comm.||U.S. Senator (Class I)||U.S. Senator (Class III)||U.S. House||Electoral College votes|
|Executive offices||State Legislature||United States Congress|
- Appointed territorial governor by President Abraham Lincoln to be the first governor of the territory died on August 19, 1863, before he could arrive in the territory.
- Gurley died prior to taking office as first appointed governor; Goodwin, who was Chief Justice of the Arizona Territorial Supreme Court, was appointed by Lincoln in his place.
- Resigned to take an elected seat as delegate to the U.S. House of Representatives
- Attorney general of Arizona Territory appointed by Goodwin.
- Territorial governor appointed April 10, 1866 by President Andrew Johnson; took the oath of office July 9.
- Secretary of Arizona Territory appointed by President Ulysses S. Grant; resigned when state capital moved.
- Attorney general of Arizona Territory.
- Territorial governor appointed by President Ulysses S. Grant.
- Territorial governor appointed by President Rutherford B. Hayes.
- It is unknown when Frémont took the oath of office; he and his family arrived in Prescott on the afternoon of October 6, 1878.
- Resigned. Frémont spent little time in the territory; and the Secretary of the Territory asked him to resume his duties or resign, and he chose resignation.
- Territorial governor appointed by President Chester A. Arthur.
- Resigned after Grover Cleveland was elected president so that the Democratic president could appoint a Democrat as governor.
- Territorial governor appointed by President Grover Cleveland.
- Territorial governor appointed by President Benjamin Harrison.
- Resigned due to a disagreement with the federal government on arid land policy.
- Resigned to handle family business out of state.
- Hughes had abolished many territorial offices, and unhappy officials successfully petitioned Cleveland to remove him.
- Territorial governor appointed by President William McKinley.
- Resigned to serve in the Spanish–American War.
- Asked by President Theodore Roosevelt to resign for opposing the Newlands Reclamation Act.
- Territorial governor appointed by President Theodore Roosevelt.
- Resigned to accept appointment as assistant chief of the records and Pension Bureau at the Department of War.
- Territorial governor appointed by President William Howard Taft.
- Campbell's narrow election win was overturned by the Arizona Supreme Court on December 22, 1917, which, following a recount, awarded the office to George W.P. Hunt. Campbell vacated the office three days later.
- Died in office.
- Appointed to fill vacancy.
- Elected to fill the vacancy caused by the previous representative being elected to the next term, but resigning before the term began.
- Initially appointed to fill vacancy.
- As state secretary of state, filled unexpired term and was later elected in his or her own right.
- The state constitution was amended in 1968 to increase gubernatorial terms from two to four years; Williams' first two terms were for two years, his third was for four years.
- Resigned to take post as United States Ambassador to Argentina.
- As state secretary of state, filled unexpired term.
- As state attorney general, filled unexpired term, and was later elected in his own right; the secretary of state at the time had been appointed, not elected, and therefore, per the state Constitution, not in the line of succession.
- January 6, 1987 – April 4, 1988: impeached and removed from office on charges of obstruction of justice and misuse of government funds.
- Resigned to take a position with the Education Leaders Council.
- A power sharing agreement was reached between the Democrats and three moderate Republicans, who elected Randall Gnant President Pro Tempore, and they organized the chamber with committees alternately being chaired by one party or the other. The twelve conservative Republicans organized as the minority faction in the chamber.  
- Resigned following confirmation as United States Secretary of Homeland Security.
- Resigned to take post as Chief Financial Officer of NASA.