Louisiana was admitted to the Union on April 30, 1812, and elects senators to class 2 and class 3. Russell Long was the state's longest-serving senator, serving from 1948âÂÂ1987. Its current senators are Republicans Bill Cassidy and John Kennedy.
Louisiana is one of fifteen states alongside California, Colorado, Georgia, Hawaii, Idaho, Maine, Massachusetts, Minnesota, Missouri, Nevada, Pennsylvania, South Dakota, Utah, and West Virginia to have a younger senior senator and an older junior senator.
|- style="height:2em" | colspan=3 | Vacant | Apr 30, 1812 âÂÂ<br/>Sep 3, 1812 | Louisiana did not elect its senators until four months after statehood. | rowspan=7 | 1 | rowspan=5 | rowspan=5 | 1 | Louisiana did not elect its senators until four months after statehood. | Apr 30, 1812 âÂÂ<br/>Sep 3, 1812 | colspan=3 | Vacant
|- style="height:2em" ! 1 | align=left | <br/>Jean Noël Destréhan<br /> | | Democratic-<br/>Republican | nowrap | Sep 3, 1812 âÂÂ<br/>Oct 1, 1812 | Resigned | rowspan=4 | Elected in 1812. | rowspan=4 nowrap | Sep 3, 1812 âÂÂ<br/>Mar 3, 1813 | rowspan=4 | Democratic-<br/>Republican | rowspan=4 align=right | Allan B. Magruder<br /> ! rowspan=4 | 1
|- style="height:2em" | colspan=3 | Vacant | nowrap | Oct 1, 1812 âÂÂ<br/>Oct 8, 1812 |
|- style="height:2em" ! 2 | align=left | <br/>Thomas Posey<br /> | | Democratic-<br/>Republican | nowrap | Oct 8, 1812 âÂÂ<br/>Feb 4, 1813 | Appointed to continue Destréhan's term.Lost election to finish Destréhan's term.
|- style="height:2em" ! rowspan=3 | 3 | rowspan=3 align=left | <br/>James Brown<br /> | rowspan=3 | Democratic-<br/>Republican | rowspan=3 nowrap | Feb 5, 1813 âÂÂ<br/>Mar 3, 1817 | rowspan=3 | Elected to finish Destréhan's term.Lost election to full term.
|- style="height:2em" | | rowspan=5 | 2 | rowspan=5 | Elected in 1813<br/>Retired. | rowspan=5 nowrap | Mar 4, 1813 âÂÂ<br/>Mar 3, 1819 | rowspan=5 | Democratic-<br/>Republican | rowspan=5 align=right | Eligius Fromentin<br /> ! rowspan=5 | 2
|- style="height:2em" |
|- style="height:2em" ! 4 | align=left | <br/>William C. C. Claiborne<br /> | | Democratic-<br/>Republican | nowrap | Mar 4, 1817 âÂÂ<br/>Nov 23, 1817 | Elected in 1817.Died. | rowspan=5 | 2 | rowspan=3
|- style="height:2em" | colspan=3 | Vacant | nowrap | Nov 23, 1817 âÂÂ<br/>Jan 12, 1818 |
|- style="height:2em" ! rowspan=6 | 5 | rowspan=6 align=left | <br/>Henry Johnson<br /> | rowspan=6 | Democratic-<br/>Republican | rowspan=6 nowrap | Jan 12, 1818 âÂÂ<br/>May 27, 1824 | rowspan=3 | Elected to finish Claiborne's term.
|- style="height:2em" | | rowspan=7 | 3 | rowspan=3 | Elected in 1819.Resigned to become U.S. Minister to France. | rowspan=3 nowrap | Mar 4, 1819 âÂÂ<br/>Dec 10, 1823 | rowspan=3 | Democratic-<br/>Republican | rowspan=3 align=right | <br/>James Brown<br /> ! rowspan=3 | 3
|- style="height:2em" |
|- style="height:2em" | rowspan=3 | Elected to full term in 1823.Resigned to become Governor of Louisiana. | rowspan=7 | 3 | rowspan=5
|- style="height:2em" | | nowrap | Dec 10, 1823 âÂÂ<br/>Jan 15, 1824 | colspan=3 | Vacant
|- style="height:2em" | rowspan=3 | Elected to finish Brown's term. | rowspan=10 nowrap | Jan 15, 1824 âÂÂ<br/>May 19, 1833 | rowspan=3 | Democratic-<br/>Republican | rowspan=10 align=right | <br/>Josiah S. Johnston<br /> ! rowspan=10 | 4
|- style="height:2em" | colspan=3 | Vacant | nowrap | May 27, 1824 âÂÂ<br/>Nov 19, 1824 |
|- style="height:2em" ! rowspan=3 | 6 | rowspan=3 align=left | <br/>Dominique Bouligny<br /> | | Democratic-<br/>Republican | rowspan=3 nowrap | Nov 19, 1824 âÂÂ<br/>Mar 3, 1829 | rowspan=3 | Elected to finish Johnson's term.
|- style="height:2em" | rowspan=2 | National<br/>Republican | | rowspan=3 | 4 | rowspan=3 | Elected to full term in 1825. | rowspan=7 | National<br/>Republican
|- style="height:2em" |
|- style="height:2em" ! rowspan=2 | 7 | rowspan=2 align=left | <br/>Edward Livingston<br /> | rowspan=2 | Jacksonian | rowspan=2 nowrap | Mar 4, 1829 âÂÂ<br/>May 24, 1831 | rowspan=2 | Elected in 1829.Resigned to become U.S. Secretary of State. | rowspan=7 | 4 |
|- style="height:2em" | rowspan=3 | rowspan=10 | 5 | rowspan=4 | Re-elected in 1831.Died.
|- style="height:2em" | colspan=3 | Vacant | nowrap | May 24, 1831 âÂÂ<br/>Nov 15, 1831 |
|- style="height:2em" ! rowspan=4 | 8 | rowspan=4 align=left | <br/>George A. Waggaman<br /> | rowspan=4 | National<br/>Republican | rowspan=4 nowrap | Nov 15, 1831 âÂÂ<br/>Mar 3, 1835 | rowspan=4 | Elected to finish Livingston's term.
|- style="height:2em" | rowspan=3
|- style="height:2em" | | nowrap | May 19, 1833 âÂÂ<br/>Dec 19, 1833 | colspan=3 | Vacant
|- style="height:2em" | rowspan=3 | Elected to finish Johnston's term.Resigned due to ill health. | rowspan=3 nowrap | Dec 19, 1833 âÂÂ<br/>Jan 5, 1837 | rowspan=3 | National<br/>Republican | rowspan=3 align=right | <br/>Alexander Porter<br /> ! rowspan=3 | 5
|- style="height:2em" | colspan=3 | Vacant | nowrap | Mar 4, 1835 âÂÂ<br/>Jan 13, 1836 | Charles Gayarré (J) was elected in 1835, but resigned due to ill health. | rowspan=6 | 5 | rowspan=4
|- style="height:2em" ! rowspan=5 | 9 | rowspan=5 align=left | <br/>Robert C. Nicholas<br /> | rowspan=3 | Jacksonian | rowspan=5 nowrap | Jan 13, 1836 âÂÂ<br/>Mar 3, 1841 | rowspan=5 | Elected to finish Gauarré's term.
|- style="height:2em" | | nowrap | Jan 5, 1837 âÂÂ<br/>Jan 12, 1837 | colspan=3 | Vacant
|- style="height:2em" | Elected to finish Porter's term. | rowspan=4 nowrap | Jan 12, 1837 âÂÂ<br/>Mar 1, 1842 | | Jacksonian | rowspan=4 align=right | <br/>Alexandre Mouton<br /> ! rowspan=4 | 6
|- style="height:2em" | rowspan=2 | Democratic | | rowspan=5 | 6 | rowspan=3 | Re-elected in 1837.Resigned. | rowspan=3 | Democratic
|- style="height:2em" |
|- style="height:2em" ! rowspan=7 | 10 | rowspan=7 align=left | <br/>Alexander Barrow<br /> | rowspan=7 | Whig | rowspan=7 nowrap | Mar 4, 1841 âÂÂ<br/>Dec 29, 1846 | rowspan=7 | Elected in 1840.Died. | rowspan=9 | 6 | rowspan=3
|- style="height:2em" | | nowrap | Mar 1, 1842 âÂÂ<br/>Apr 14, 1842 | colspan=3 | Vacant
|- style="height:2em" | Appointed to finish Mouton's term.Lost election to full term. | nowrap | Apr 14, 1842 âÂÂ<br/>Mar 3, 1843 | | Whig | align=right | <br/>Charles Conrad<br /> ! 7
|- style="height:2em" | rowspan=3 | rowspan=7 | 7 | Elected in 1843, but due to ill health did not take his seat.Died. | nowrap | Mar 4, 1843 âÂÂ<br/>Jan 13, 1844 | | Whig | align=right | <br/>Alexander Porter<br /> ! 8
|- | | nowrap | Jan 13, 1844 âÂÂ<br/>Feb 12, 1844 | colspan=3 | Vacant
|- style="height:2em" | rowspan=5 |Elected to finish Porter's termLost election to full term in 1849. | rowspan=5 nowrap | Feb 12, 1844 âÂÂ<br/>Mar 3, 1849 | rowspan=5 | Whig | rowspan=5 align=right | <br/>Henry Johnson<br /> ! rowspan=5 | 9
|- style="height:2em" | rowspan=3
|- style="height:2em" | colspan=3 | Vacant | nowrap | Dec 29, 1846 âÂÂ<br/>Jan 21, 1847 |
|- style="height:2em" ! 11 | align=left | <br/>Pierre Soulé<br /> | | Democratic | nowrap | Jan 21, 1847 âÂÂ<br/>Mar 3, 1847 | Elected to finish Barrow's term.
|- style="height:2em" ! rowspan=3 | 12 | rowspan=3 align=left | <br/>Solomon W. Downs<br /> | rowspan=3 | Democratic | rowspan=3 nowrap | Mar 4, 1847 âÂÂ<br/>Mar 3, 1853 | rowspan=3 | Elected in 1847.Lost re-election. | rowspan=3 | 7 |
|- style="height:2em" | | rowspan=5 | 8 | rowspan=3 | Elected in 1848.Resigned to become U.S. Minister to Spain. | rowspan=3 nowrap | Mar 3, 1849 âÂÂ<br/>Apr 11, 1853 | rowspan=3 | Democratic | rowspan=3 align=right | <br/>Pierre Soulé<br /> ! rowspan=3 | 10
|- style="height:2em" |
|- style="height:2em" ! rowspan=6 | 13 | rowspan=6 align=left | <br/>Judah P. Benjamin<br /> | rowspan=4 | Whig | rowspan=6 nowrap | Mar 4, 1853 âÂÂ<br/>Feb 4, 1861 | rowspan=5 | Elected in 1852. | rowspan=5 | 8 | rowspan=3
|- style="height:2em" | | nowrap | Apr 11, 1853 âÂÂ<br/>Dec 5, 1853 | colspan=3 | Vacant
|- style="height:2em" | Elected to finish Soulé's term. | rowspan=4 nowrap | Dec 5, 1853 âÂÂ<br/>Feb 4, 1861 | rowspan=4 | Democratic | rowspan=4 align=right | <br/>John Slidell<br /> ! rowspan=4 | 11
|- style="height:2em" | | rowspan=4 | 9 | rowspan=3 | Re-election year unknown.Resigned.
|- style="height:2em" | rowspan=2 | Democratic |
|- style="height:2em" | Re-elected in 1859.Withdrew. | rowspan=4 | 9 | rowspan=2
|- style="height:2em" | rowspan=5 colspan=3 | Vacant | rowspan=5 nowrap | Feb 4, 1861 âÂÂ<br/>Jul 8, 1868 | rowspan=5 | Civil War and Reconstruction | rowspan=6 | Civil War and Reconstruction | rowspan=6 nowrap | Feb 4, 1861 âÂÂ<br/>Jul 9, 1868 | rowspan=6 colspan=3 | Vacant
|- style="height:2em" | | rowspan=3 | 10
|- style="height:2em" |
|- style="height:2em" | rowspan=5 | 10 |
|- style="height:2em" | rowspan=3 | rowspan=6 | 11
|- style="height:2em" ! rowspan=3 | 14 | rowspan=3 align=left | <br/>John S. Harris<br /> | rowspan=3 | Republican | rowspan=3 nowrap | Jul 8, 1868 âÂÂ<br/>Mar 3, 1871 | rowspan=3 | Elected to finish incomplete term in 1868..
|- style="height:2em" | rowspan=3 | Elected to finish incomplete term.Resigned to become Governor of Louisiana. | rowspan=3 nowrap | Jul 9, 1868 âÂÂ<br/>Nov 1, 1872 | rowspan=3 | Republican | rowspan=3 align=right | <br/>William Pitt Kellogg<br /> ! rowspan=3 | 12
|- style="height:2em" |
|- style="height:2em" ! rowspan=5 | 15 | rowspan=5 align=left | <br/>J. R. West<br /> | rowspan=5 | Republican | rowspan=5 nowrap | Mar 4, 1871 âÂÂ<br/>Mar 3, 1877 | rowspan=5 | Election year unknown.Retired. | rowspan=5 | 11 | rowspan=2
|- style="height:2em" | rowspan=3 | Senate declined to seat rival claimants William L. McMillen and P. B. S. Pinchback | rowspan=3 nowrap | Nov 1, 1872 âÂÂ<br/>Jan 12, 1876 | rowspan=3 colspan=3 | Vacant
|- style="height:2em" | | rowspan=4 | 12
|- style="height:2em" | rowspan=2
|- style="height:2em" | rowspan=2 | Elected to finish incomplete term in 1876.Lost re-election. | rowspan=2 nowrap | Jan 12, 1876 âÂÂ<br/>Mar 3, 1879 | rowspan=2 | Democratic | rowspan=2 align=right | <br/>James B. Eustis<br /> ! rowspan=2 | 13
|- style="height:2em" ! rowspan=3 | 16 | rowspan=3 align=left | <br/>William Pitt Kellogg<br /> | rowspan=3 | Republican | rowspan=3 nowrap | Mar 4, 1877 âÂÂ<br/>Mar 3, 1883 | rowspan=3 | Elected in 1876.Retired to run for U.S. House. | rowspan=3 | 12 |
|- style="height:2em" | | rowspan=3 | 13 | rowspan=3 | Elected in 1879.Lost re-election. | rowspan=3 nowrap | Mar 4, 1879 âÂÂ<br/>Mar 3, 1885 | rowspan=3 | Democratic | rowspan=3 align=right | <br/>Benjamin F. Jonas<br /> ! rowspan=3 | 14
|- style="height:2em" |
|- style="height:2em" ! rowspan=5 | 17 | rowspan=5 align=left | <br/>Randall L. Gibson<br /> | rowspan=5 | Democratic | rowspan=5 nowrap | Mar 4, 1883 âÂÂ<br/>Dec 15, 1892 | rowspan=3 | Elected in 1882. | rowspan=3 | 13 |
|- style="height:2em" | | rowspan=3 | 14 | rowspan=3 | Election year unknown.Retired. | rowspan=3 nowrap | Mar 4, 1885 âÂÂ<br/>Mar 3, 1891 | rowspan=3 | Democratic | rowspan=3 align=right | <br/>James B. Eustis<br /> ! rowspan=3 | 15
|- style="height:2em" |
|- style="height:2em" | rowspan=2 | Re-elected in 1889.Died. | rowspan=6 | 14 |
|- style="height:2em" | rowspan=3 | rowspan=6 | 15 | rowspan=4 | Elected in 1891.Resigned to become U.S. Supreme Court Justice. | rowspan=4 nowrap | Mar 4, 1891 âÂÂ<br/>Mar 12, 1894 | rowspan=4 | Democratic | rowspan=4 align=right | <br/>Edward Douglass White<br /> ! rowspan=4 | 16
|- style="height:2em" | colspan=3 | Vacant | nowrap | Dec 15, 1892 âÂÂ<br/>Dec 31, 1892 |
|- style="height:2em" ! rowspan=6 | 18 | rowspan=6 align=left | <br/>Donelson Caffery<br /> | rowspan=6 | Democratic | rowspan=6 nowrap | Dec 31, 1892 âÂÂ<br/>Mar 3, 1901 | rowspan=3 | Appointed to continue Gibson's term.Elected in 1894 to finish Gibson's term.
|- style="height:2em" | rowspan=2
|- style="height:2em" | rowspan=2 | Appointed to continue White's term.Elected in 1894 to finish White's term.Retired. | rowspan=2 nowrap | Mar 12, 1894 âÂÂ<br/>Mar 3, 1897 | rowspan=2 | Democratic | rowspan=2 align=right | <br/>Newton C. Blanchard<br /> ! rowspan=2 | 17
|- style="height:2em" | rowspan=3 | Elected in 1894 to the next term, before election to finish Gibson's term.Retired. | rowspan=3 | 15 |
|- style="height:2em" | | rowspan=3 | 16 | rowspan=3 | Elected in 1896. | rowspan=7 nowrap | Mar 4, 1897 âÂÂ<br/>Jun 28, 1910 | rowspan=7 | Democratic | rowspan=7 align=right | <br/>Samuel D. McEnery<br /> ! rowspan=7 | 18
|- style="height:2em" |
|- style="height:2em" ! rowspan=8 | 19 | rowspan=8 align=left | <br/>Murphy J. Foster<br /> | rowspan=8 | Democratic | rowspan=8 nowrap | Mar 4, 1901 âÂÂ<br/>Mar 3, 1913 | rowspan=3 | Elected in 1900. | rowspan=3 | 16 |
|- style="height:2em" | | rowspan=3 | 17 | rowspan=3 | Re-elected early in 1900.
|- style="height:2em" |
|- style="height:2em" | rowspan=5 | Re-elected early in 1904.Lost renomination. | rowspan=5 | 17 |
|- style="height:2em" | rowspan=3 | rowspan=5 | 18 | Re-elected in 1908.Died.
|- style="height:2em" | | nowrap | Jun 28, 1910 âÂÂ<br/>Dec 7, 1910 | colspan=3 | Vacant
|- style="height:2em" | rowspan=3 |Elected to finish McEnery's term.Retired. | rowspan=3 nowrap | Dec 7, 1910 âÂÂ<br/>Mar 3, 1915 | rowspan=3 | Democratic | rowspan=3 align=right | <br/>John Thornton<br /> ! rowspan=3 | 19
|- style="height:2em" |
|- style="height:2em" ! rowspan=12 | 20 | rowspan=12 align=left | <br/>Joseph E. Ransdell<br /> | rowspan=12 | Democratic | rowspan=12 nowrap | Mar 4, 1913 âÂÂ<br/>Mar 3, 1931 | rowspan=6 | Elected in 1912. | rowspan=6 | 18 |
|- style="height:2em" | | rowspan=6 | 19 | rowspan=2 | Elected early in 1912.Died. | rowspan=2 nowrap | Mar 4, 1915 âÂÂ<br/>Apr 12, 1918 | rowspan=2 | Democratic | rowspan=2 align=right | <br/>Robert F. Broussard<br /> ! rowspan=2 | 20
|- style="height:2em" | rowspan=4
|- style="height:2em" | | nowrap | Apr 12, 1918 âÂÂ<br/>Apr 22, 1918 | colspan=3 | Vacant
|- style="height:2em" | Appointed to continue Broussard's term.Retired when elected successor qualified. | nowrap | Apr 22, 1918 âÂÂ<br/>Nov 5, 1918 | | Democratic | align=right | <br/>Walter Guion<br /> ! 21
|- style="height:2em" | rowspan=2 | Elected to finish Broussard's term.Retired. | rowspan=2 nowrap | Nov 6, 1918 âÂÂ<br/>Mar 3, 1921 | rowspan=2 | Democratic | rowspan=2 align=right | <br/>Edward J. Gay<br /> ! rowspan=2 | 22
|- style="height:2em" | rowspan=3 | Re-elected in 1918. | rowspan=3 | 19 |
|- style="height:2em" | | rowspan=3 | 20 | rowspan=3 | Elected in 1920. | rowspan=7 nowrap | Mar 4, 1921 âÂÂ<br/>Mar 3, 1933 | rowspan=7 | Democratic | rowspan=7 align=right |<br/>Edwin S. Broussard<br /> ! rowspan=7 | 23
|- style="height:2em" |
|- style="height:2em" | rowspan=3 | Re-elected in 1924.Lost renomination. | rowspan=3 | 20 |
|- style="height:2em" | | rowspan=4 | 21 | rowspan=4 | Re-elected in 1926.Lost renomination.
|- style="height:2em" |
|- style="height:2em" | colspan=3 | Vacant | nowrap | Mar 4, 1931 âÂÂ<br/>Jan 25, 1932 | | rowspan=6 | 21 | rowspan=2
|- style="height:2em" ! rowspan=3 | 21 | rowspan=3 align=left | <br/>Huey Long<br /> | rowspan=3 | Democratic | rowspan=3 nowrap | Jan 25, 1932 âÂÂ<br/>Sep 10, 1935 | rowspan=3 | Elected in 1930, but continued to serve as Louisiana governor until Jan 25, 1932.Assassinated.
|- style="height:2em" | | rowspan=5 | 22 | rowspan=5 | Elected in 1932. | rowspan=10 nowrap | Mar 4, 1933 âÂÂ<br/>May 14, 1948 | rowspan=10 | Democratic | rowspan=10 align=right | <br/>John Overton<br /> ! rowspan=10 | 24
|- style="height:2em" | rowspan=3
|- style="height:2em" | colspan=3 | Vacant | nowrap | Sep 10, 1935 âÂÂ<br/>Jan 31, 1936 |
|- style="height:2em" ! 22 | align=left | <br/>Rose M. Long<br /> | | Democratic | nowrap | Jan 31, 1936 âÂÂ<br/>Jan 3, 1937 | Appointed to continue her husband's term.Elected in 1936 to finish her husband's term.Retired.
|- style="height:2em" ! rowspan=21 | 23 | rowspan=21 align=left | <br/>Allen Ellender<br /> | rowspan=21 | Democratic | rowspan=21 nowrap | Jan 3, 1937 âÂÂ<br/>July 27, 1972 | rowspan=3 | Elected in 1936. | rowspan=3 | 22 |
|- style="height:2em" | | rowspan=3 | 23 | rowspan=3 | Re-elected in 1938.
|- style="height:2em" |
|- style="height:2em" | rowspan=6 | Re-elected in 1942. | rowspan=6 | 23 |
|- style="height:2em" | | rowspan=6 | 24 | rowspan=2 | Re-elected in 1944.Died.
|- style="height:2em" | rowspan=4
|- style="height:2em" | | nowrap | May 14, 1948 âÂÂ<br/>May 18, 1948 | colspan=3 | Vacant
|- style="height:2em" | Appointed to continue Overton's term.Retired when elected successor qualified. | nowrap | May 18, 1948 âÂÂ<br/>Dec 30, 1948 | | Democratic | align=right | <br/>William C. Feazel<br /> ! 25
|- style="height:2em" | rowspan=2 | Elected to finish Overton's term. | rowspan=23 nowrap | Dec 31, 1948 âÂÂ<br/>Jan 3, 1987 | rowspan=23 | Democratic | rowspan=23 align=right | <br/>Russell Long<br /> ! rowspan=23 | 26
|- style="height:2em" | rowspan=3 | Re-elected in 1948. | rowspan=3 | 24 |
|- style="height:2em" | | rowspan=3 | 25 | rowspan=3 | Re-elected in 1950.
|- style="height:2em" |
|- style="height:2em" | rowspan=3 | Re-elected in 1954. | rowspan=3 | 25 |
|- style="height:2em" | | rowspan=3 | 26 | rowspan=3 | Re-elected in 1956.
|- style="height:2em" |
|- style="height:2em" | rowspan=3 | Re-elected in 1960. | rowspan=3 | 26 |
|- style="height:2em" | | rowspan=3 | 27 | rowspan=3 | Re-elected in 1962.
|- style="height:2em" |
|- style="height:2em" | rowspan=3 | Re-elected in 1966.Died. | rowspan=6 | 27 |
|- style="height:2em" | | rowspan=6 | 28 | rowspan=6 | Re-elected in 1968.
|- style="height:2em" | rowspan=4
|- style="height:2em" | colspan=3 | Vacant | nowrap | Jul 27, 1972 âÂÂ<br/>Aug 1, 1972 |
|- style="height:2em" ! 24 | align=left | <br/>Elaine Edwards<br /> | | Democratic | nowrap | Aug 1, 1972 âÂÂ<br/>Nov 13, 1972 | Appointed by her husband to continue Ellender's term.Retired when successor qualified and resigned early.
|- style="height:2em" ! rowspan=13 | 25 | rowspan=13 align=left | <br/>J. Bennett Johnston<br /> | rowspan=13 | Democratic | rowspan=13 nowrap | Nov 14, 1972 âÂÂ<br/>Jan 3, 1997 | Appointed to finish Ellender's term, having already been elected to the next term.
|- style="height:2em" | rowspan=3 | Elected in 1972. | rowspan=3 | 28 |
|- style="height:2em" | | rowspan=3 | 29 | rowspan=3 | Re-elected in 1974.
|- style="height:2em" |
|- style="height:2em" | rowspan=3 | Re-elected in 1978. | rowspan=3 | 29 |
|- style="height:2em" | | rowspan=3 | 30 | rowspan=3 | Re-elected in 1980.Retired.
|- style="height:2em" |
|- style="height:2em" | rowspan=3 | Re-elected in 1984. | rowspan=3 | 30 |
|- style="height:2em" | | rowspan=3 | 31 | rowspan=3 | Elected in 1986. | rowspan=9 nowrap | Jan 3, 1987 âÂÂ<br/>Jan 3, 2005 | rowspan=9 | Democratic | rowspan=9 align=right | <br/>John Breaux<br /> ! rowspan=9 | 27
|- style="height:2em" |
|- style="height:2em" | rowspan=3 | Re-elected in 1990.Retired. | rowspan=3 | 31 |
|- style="height:2em" | | rowspan=3 | 32 | rowspan=3 | Re-elected in 1992.
|- style="height:2em" |
|- style="height:2em" ! rowspan=9 | 26 | rowspan=9 align=left | <br/>Mary Landrieu<br /> | rowspan=9 | Democratic | rowspan=9 nowrap | Jan 3, 1997 âÂÂ<br/>Jan 3, 2015 | rowspan=3 | Elected in 1996. | rowspan=3 | 32 |
|- style="height:2em" | | rowspan=3 | 33 | rowspan=3 | Re-elected in 1998.Retired.
|- style="height:2em" |
|- style="height:2em" | rowspan=3 | Re-elected in 2002 in runoff election. | rowspan=3 | 33 |
|- style="height:2em" | | rowspan=3 | 34 | rowspan=3 | Elected in 2004. | rowspan=6 nowrap | Jan 3, 2005 âÂÂ<br/>Jan 3, 2017 | rowspan=6 | Republican | rowspan=6 align=right | <br/>David Vitter<br /> ! rowspan=6 | 28
|- style="height:2em" |
|- style="height:2em" | rowspan=3 | Re-elected in 2008.Lost re-election. | rowspan=3 | 34 |
|- style="height:2em" | | rowspan=3 | 35 | rowspan=3 | Re-elected in 2010.Retired.
|- style="height:2em" |
|- style="height:2em" ! rowspan=6 | 27 | rowspan=6 align=left | <br/>Bill Cassidy<br /> | rowspan=6 | Republican | rowspan=6 nowrap | Jan 3, 2015 âÂÂ<br/>present | rowspan=3 | Elected in 2014 in runoff election. | rowspan=3 | 35 |
|- style="height:2em" | | rowspan=3 | 36 | rowspan=3 | Elected in 2016 in runoff election. | rowspan=6 nowrap | Jan 3, 2017 âÂÂ<br/>present | rowspan=6 | Republican | rowspan=6 align=right | <br/>John Kennedy<br /> ! rowspan=6 | 29
|- style="height:2em" |
|- style="height:2em" | rowspan=3 | Re-elected in 2020. | rowspan=3 | 36 |
|- style="height:2em" | | rowspan=3 |37 | rowspan=3 | Re-elected in 2022.
|- style="height:2em" |
|- style="height:2em" | rowspan=2 colspan=5 | To be determined in the 2026 election. | rowspan=2 | 37 |
|- style="height:2em" | | 38 | colspan=5 | To be determined in the 2028 election.