Missouri was admitted to the Union on August 10, 1821. [edit] Class I | Senator | Party | Took office | Left office | Reason | Notes/other offices | | Thomas Hart Benton |  | Democratic-
Republican | August 10, 1821 | March 4, 1851 | Lost re-election | | | Democratic | | Henry S. Geyer |  | Whig | March 4, 1851 | March 4, 1857 | Retired | Speaker of the Missouri House of Representatives | | Trusten Polk |  | Democratic | March 4, 1857 | January 10, 1862 | Expelled | Governor of Missouri (1857) | | John B. Henderson |  | Unionist | January 17, 1862 | March 4, 1869 | Retired | | | Carl Schurz |  | Republican | March 4, 1869 | March 4, 1875 | Retired | Secretary of the Interior (1877–1881)
Minister to Spain (1861–1862) | | Francis Cockrell |  | Democratic | March 4, 1875 | March 4, 1905 | | | | William Warner |  | Republican | March 18, 1905 | March 4, 1911 | Retired | | | James A. Reed |  | Democratic | March 4, 1911 | March 4, 1929 | Retired | | | Roscoe C. Patterson | | Republican | March 4, 1929 | January 3, 1935 | Lost re-election | | | Harry S. Truman |  | Democratic | January 3, 1935 | January 17, 1945 | Resigned | President of the United States (1945–1953)
Vice President of the United States (1945) | | Frank P. Briggs | | Democratic | January 18, 1945 | January 3, 1947 | Lost election | | | James P. Kem |  | Republican | January 3, 1947 | January 3, 1953 | Lost re-election | | | Stuart Symington |  | Democratic | January 3, 1953 | December 27, 1976 | Resigned | Secretary of the Air Force (1947–1950) | | John Danforth |  | Republican | December 27, 1976 | January 3, 1995 | Retired | U.N. Ambassador (2004–2005)
Missouri Attorney General (1969–1976) | | John Ashcroft |  | Republican | January 3, 1995 | January 3, 2001 | Lost re-election | U.S. Attorney General (2001–2005)
Governor of Missouri (1985–1993)
Missouri Attorney General (1976–1985) | | Jean Carnahan |  | Democratic | January 3, 2001 | November 4, 2002 | Lost special election[1] | | | Jim Talent |  | Republican | November 25, 2002 | January 3, 2007 | Lost re-election | | | Claire McCaskill |  | Democratic | January 3, 2007 | Incumbent | | | [edit] Class III | Senator | Party | Took office | Left office | Reason | Notes/other offices | | David Barton |  | Democratic-
Republican | August 10, 1821 | March 4, 1831 | Lost re-election | | National
Republican | | Alexander Buckner |  | Democratic | March 4, 1831 | June 6, 1833 | Died | | | Lewis F. Linn |  | Democratic | October 25, 1833 | October 3, 1843 | Died | | | David Rice Atchison |  | Democratic | October 14, 1843 | March 4, 1855 | | Senate President pro tempore (1846–1849; 1852–1854) | | James S. Green |  | Democratic | January 12, 1857 | March 4, 1861 | | | | Waldo P. Johnson |  | Democratic | March 17, 1861 | January 10, 1862 | Expelled | | | Robert Wilson |  | Republican | January 17, 1862 | November 13, 1863 | Successor qualified | | | B. Gratz Brown |  | Unionist | November 13, 1863 | March 4, 1867 | | Governor of Missouri (1871–1873) | | Charles D. Drake |  | Republican | March 4, 1867 | December 19, 1870 | Resigned | | | Daniel T. Jewett |  | Republican | December 19, 1870 | January 20, 1871 | Retired | | | Francis P. Blair, Jr. |  | Democratic | January 20, 1871 | March 4, 1873 | Retired | | | Lewis V. Bogy |  | Democratic | March 4, 1873 | September 20, 1877 | Died | | | David H. Armstrong |  | Democratic | September 29, 1877 | January 26, 1879 | Retired | | | James Shields |  | Democratic | January 27, 1879 | March 4, 1879 | Retired | Previously a senator from Illinois and from Minnesota | | George G. Vest |  | Democratic | March 4, 1879 | March 4, 1903 | Retired | | | William J. Stone |  | Democratic | March 4, 1903 | April 14, 1918 | Died | Governor of Missouri (1893–1897) | | Xenophon P. Wilfley |  | Democratic | April 30, 1918 | November 5, 1918 | Lost special primary election | | | Selden P. Spencer |  | Republican | November 6, 1918 | May 16, 1925 | Died | | | George H. Williams | | Republican | May 25, 1925 | December 5, 1926 | Lost special election | | | Harry B. Hawes |  | Democratic | December 6, 1926 | February 3, 1933 | Resigned | | | Joel B. Clark |  | Democratic | February 3, 1933 | January 3, 1945 | Lost renomination | Judge of the D.C. Circuit Court of Appeals (1945–1954 | | Forrest C. Donnell |  | Republican | January 3, 1945 | January 3, 1951 | Lost re-election | Governor of Missouri (1941–1945) | | Thomas C. Hennings, Jr. |  | Democratic | January 3, 1951 | September 13, 1960 | Died | | | Edward V. Long |  | Democratic | September 23, 1960 | December 27, 1968 | Resigned[2] | | | Thomas Eagleton |  | Democratic | December 28, 1968 | January 3, 1987 | Retired | Lieutenant Governor of Missouri (1965–1969)
Missouri Attorney General (1961–1965) | | Kit Bond |  | Republican | January 3, 1987 | Incumbent | | Governor of Missouri (1973–1977; 1981–1985) | - ^ Mel Carnahan died days before defeating Sen. John Ashcroft. The governor appointed Jean Carnahan, his widow, to fill the resulting vacancy.
- ^ Long had previously lost his renomination bid for the term beginning January 3, 1969.
[edit] See also
| United States Senators from Missouri | | | Class 1 | |  | | | Class 3 | | | |
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