List of United States Senators from Louisiana
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Louisiana was admitted to the Union on April 30, 1812. Its Senate seats were declared vacant in March 1861 owing to its purported secession from the Union. They were again filled from July 1868.
Class 2
| Senator | Party | From | To |
|---|---|---|---|
| Jean N. Destrehan | Democrat | 1812 | 1812 |
| Thomas Posey | Democrat | 1812 | 1813 |
| James Brown | Democrat | 1813 | 1817 |
| William C. C. Claiborne | Democrat | 1817 | 1817 |
| Henry Johnson | Democrat, National Republican | 1818 | 1824 |
| Dominique Bouligny | National Republican | 1824 | 1829 |
| Edward Livingston | Democrat | 1829 | 1831 |
| George A. Waggaman | National Republican | 1831 | 1835 |
| Robert C. Nicholas | Democrat | 1836 | 1841 |
| Alexander Barrow | Whig | 1841 | 1846 |
| Pierre Soulé | Democrat | 1847 | 1847 |
| Solomon W. Downs | Democrat | 1847 | 1853 |
| Judah P. Benjamin | Whig, Democrat | 1853 | 1861 |
| Vacant | 1861 | 1868 | |
| John S. Harris | Republican | 1868 | 1871 |
| Joseph R. West | Republican | 1871 | 1877 |
| William P. Kellogg | Republican | 1877 | 1883 |
| Randall L. Gibson | Democrat | 1883 | 1892 |
| Donelson Caffery | Democrat | 1892 | 1901 |
| Murphy J. Foster | Democrat | 1901 | 1913 |
| Joseph E. Ransdell | Democrat | 1913 | 1931 |
| Huey P. Long | Democrat | 1932 | 1935 |
| Rose McConnell Long | Democrat | 1936 | 1937 |
| Allen J. Ellender | Democrat | 1937 | 1972 |
| Elaine S. Edwards | Democrat | 1972 | 1972 |
| J. Bennett Johnston | Democrat | 1972 | 1997 |
| Mary L. Landrieu | Democrat | 1997 |
Class 3
| Senator | Party | From | To |
|---|---|---|---|
| Allan B. Magruder | Democrat | 1812 | 1813 |
| Eligius Fromentin | Democrat | 1813 | 1819 |
| James Brown | Democrat, National Republican | 1819 | 1823 |
| Josiah S. Johnston | Democrat, National Republican | 1824 | 1833 |
| Alexander Porter | National Republican | 1833 | 1837 |
| Alexander Mouton | Democrat | 1837 | 1842 |
| Charles M. Conrad | Whig | 1842 | 1843 |
| Alexander Porter | Whig | 1843 | 1844 |
| Henry Johnson | Whig | 1844 | 1849 |
| Pierre Soulé | Democrat | 1849 | 1853 |
| John Slidell | Democrat | 1853 | 1861 |
| Vacant | 1861 | 1868 | |
| William P. Kellogg | Republican | 1868 | 1872 |
| Vacant | 1872 | 1876 | |
| James B. Eustis | Democrat | 1876 | 1879 |
| Henry M. Spofford | Democrat | 1877 | 1877 30 |
| Benjamin F. Jonas | Democrat | 1879 | 1885 |
| James B. Eustis | Democrat | 1885 | 1891 |
| Edward D. White | Democrat | 1891 | 1894 |
| Newton C. Blanchard | Democrat | 1894 | 1897 |
| Samuel D. McEnery | Democrat | 1897 | 1910 |
| John R. Thornton | Democrat | 1910 | 1915 |
| Robert F. Broussard | Democrat | 1915 | 1918 |
| Walter Guion | Democrat | 1918 | |
| Edward J. Gay | Democrat | 1918 | 1921 |
| Edwin S. Broussard | Democrat | 1921 | 1933 |
| John H. Overton | Democrat | 1933 | 1948 |
| William C. Feazel | Democrat | 1948 | 1948 |
| Russell B. Long | Democrat | 1948 | 1987 |
| John B. Breaux | Democrat | 1987 | 2005 |
| David Vitter | Republican | 2005 |