To date, 16 senators have also served as president of the United States. Three senators, Warren G. Harding, John F. Kennedy, and Barack Obama moved directly from the U.S. Senate to the White House.
(Photo: Warren G. Harding. Senate Historical Office)
| Name | Years as Senator | Years as President | |
|---|---|---|---|
 | Monroe, James | 1790-1794 | 1817-1825 |
 | Adams, John Quincy | 1803-1808 | 1825-1829 |
 | Jackson, Andrew | 1797-1798; 1823-1825 | 1829-1837 |
 | Van Buren, Martin | 1821-1828 | 1837-1841 |
 | Harrison, William Henry | 1825-1828 | 1841 |
 | Tyler, John | 1827-1836 | 1841-1845 |
 | Pierce, Franklin | 1837-1842 | 1853-1857 |
 | Buchanan, James | 1834-1845 | 1857-1861 |
 | Johnson, Andrew | 1857-1862; 1875 | 1865-1869 |
 | Harrison, Benjamin | 1881-1887 | 1889-1893 |
 | Harding, Warren G. | 1915-1921 | 1921-1923 |
 | Truman, Harry S. | 1935-1945 | 1945-1953 |
 | Kennedy, John F. | 1953-1960 | 1961-1963 |
 | Johnson, Lyndon B. | 1949-1961 | 1963-1969 |
 | Nixon, Richard M. | 1950-1953 | 1969-1974 |
 | Obama, Barack | 2005-2008 | 2009-2017 |
