List of United States senators from Louisiana

Louisiana was admitted to the Union on April 30, 1812, and elects senators to class 2 and class 3. Its current senators are Republicans Bill Cassidy and John Kennedy. Russell Long was the state's longest serving senator, served 1948–1987. Louisiana is one of fifteen states alongside Arizona, Colorado, Florida, Georgia, Hawaii, Idaho, Indiana, Maine, Massachusetts, Minnesota, Missouri, Nevada, South Dakota and Utah to have a younger senior senator and an older junior senator.

Current delegation

Bill Cassidy (R)

John Kennedy (R)

List of senators

#	Senator	Party	Dates in office	Electoral history	T	C	T	Electoral history	Dates in office	Party	Senator	#
Class 2 Class 2 U.S. senators belong to the electoral cycle that has recently been contested in 2002, 2008, 2014, and 2020. The next election will be in 2026.						C	Class 3 Class 3 U.S. senators belong to the electoral cycle that has recently been contested in 2004, 2010, 2016, and 2022. The next election will be in 2028.
Vacant			Apr 30, 1812 – Sep 3, 1812	Louisiana did not elect its senators until four months after statehood.	1	12th	1	Louisiana did not elect its senators until four months after statehood.	Apr 30, 1812 – Sep 3, 1812	Vacant
1	Jean Noël Destréhan	Democratic- Republican	Sep 3, 1812 – Oct 1, 1812	Resigned				Elected in 1812.	Sep 3, 1812 – Mar 3, 1813	Democratic- Republican	Allan B. Magruder	1
Vacant			Oct 1, 1812 – Oct 8, 1812
2	Thomas Posey	Democratic- Republican	Oct 8, 1812 – Feb 4, 1813	Appointed to continue Destréhan's term. Lost election to finish Destréhan's term.
3	James Brown	Democratic- Republican	Feb 5, 1813 – Mar 3, 1817	Elected to finish Destréhan's term. Lost election to full term.
						13th	2	Elected in 1813 Retired.	Mar 4, 1813 – Mar 3, 1819	Democratic- Republican	Eligius Fromentin	2
						14th
4	William C. C. Claiborne	Democratic- Republican	Mar 4, 1817 – Nov 23, 1817	Elected in 1817. Died.	2	15th
Vacant			Nov 23, 1817 – Jan 12, 1818
5	Henry Johnson	Democratic- Republican	Jan 12, 1818 – May 27, 1824	Elected to finish Claiborne's term.
						16th	3	Elected in 1819. Resigned to become U.S. Minister to France.	Mar 4, 1819 – Dec 10, 1823	Democratic- Republican	James Brown	3
						17th
				Elected to full term in 1823. Resigned to become Governor of Louisiana.	3	18th
									Dec 10, 1823 – Jan 15, 1824	Vacant
								Elected to finish Brown's term.	Jan 15, 1824 – May 19, 1833	Democratic- Republican	Josiah S. Johnston	4
Vacant			May 27, 1824 – Nov 19, 1824
6	Dominique Bouligny	Democratic- Republican	Nov 19, 1824 – Mar 3, 1829	Elected to finish Johnson's term.
		National Republican				19th	4	Elected to full term in 1825.		National Republican
		National Republican				20th
7	Edward Livingston	Jacksonian	Mar 4, 1829 – May 24, 1831	Elected in 1829.^[1] Resigned to become U.S. Secretary of State.	4	21st
7	Edward Livingston	Jacksonian	Mar 4, 1829 – May 24, 1831			22nd	5	Re-elected in 1831. Died.
Vacant			May 24, 1831 – Nov 15, 1831
8	George A. Waggaman	National Republican	Nov 15, 1831 – Mar 3, 1835	Elected to finish Livingston's term.
						23rd
									May 19, 1833 – Dec 19, 1833	Vacant
								Elected to finish Johnston's term. Resigned due to ill health.	Dec 19, 1833 – Jan 5, 1837	National Republican	Alexander Porter	5
Vacant			Mar 4, 1835 – Jan 13, 1836	Charles Gayarré (J) was elected in 1835, but resigned due to ill health.	5	24th
9	Robert C. Nicholas	Jacksonian	Jan 13, 1836 – Mar 3, 1841	Elected to finish Gauarré's term. [data missing]
									Jan 5, 1837 – Jan 12, 1837	Vacant
								Elected to finish Porter's term.	Jan 12, 1837 – Mar 1, 1842	Jacksonian	Alexandre Mouton	6
		Democratic				25th	6	Re-elected in 1837. Resigned.		Democratic
		Democratic				26th
10	Alexander Barrow	Whig	Mar 4, 1841 – Dec 29, 1846	Elected in 1840. Died.	6	27th
									Mar 1, 1842 – Apr 14, 1842	Vacant
								Appointed to finish Mouton's term. Lost election to full term.	Apr 14, 1842 – Mar 3, 1843	Whig	Charles Conrad	7
						28th	7	Elected in 1843, but due to ill health did not take his seat. Died.	Mar 4, 1843 – Jan 13, 1844	Whig	Alexander Porter	8
									Jan 13, 1844 – Feb 12, 1844	Vacant
								Elected to finish Porter's term Lost election to full term in 1849.	Feb 12, 1844 – Mar 3, 1849	Whig	Henry Johnson	9
						29th
Vacant			Dec 29, 1846 – Jan 21, 1847
11	Pierre Soulé	Democratic	Jan 21, 1847 – Mar 3, 1847	Elected to finish Barrow's term. [data missing]
12	Solomon W. Downs	Democratic	Mar 4, 1847 – Mar 3, 1853	Elected in 1847. Lost re-election.	7	30th
						31st	8	Elected in 1848. Resigned to become U.S. Minister to Spain.	Mar 3, 1849 – Apr 11, 1853	Democratic	Pierre Soulé	10
						32nd
13	Judah P. Benjamin	Whig	Mar 4, 1853 – Feb 4, 1861	Elected in 1852.	8	33rd
									Apr 11, 1853 – Dec 5, 1853	Vacant
								Elected to finish Soulé's term.	Dec 5, 1853 – Feb 4, 1861	Democratic	John Slidell	11
						34th	9	Re-election year unknown. Resigned.
		Democratic				35th
		Democratic		Re-elected in 1859. Withdrew.	9	36th
Vacant			Feb 4, 1861 – Jul 8, 1868	Civil War and Reconstruction		36th		Civil War and Reconstruction	Feb 4, 1861 – Jul 9, 1868	Vacant
						37th	10
						38th
					10	39th
						40th	11
14	John S. Harris	Republican	Jul 8, 1868 – Mar 3, 1871	Elected to finish incomplete term in 1868. [data missing].
								Elected to finish incomplete term. Resigned to become Governor of Louisiana.	Jul 9, 1868 – Nov 1, 1872	Republican	William Pitt Kellogg	12
						41st
15	J. R. West	Republican	Mar 4, 1871 – Mar 3, 1877	Election year unknown. Retired.	11	42nd
						42nd		Senate declined to seat rival claimants William L. McMillen and P. B. S. Pinchback^[2]	Nov 1, 1872 – Jan 12, 1876	Vacant
						43rd	12
						44th
						44th		Elected to finish incomplete term in 1876. Lost re-election.	Jan 12, 1876 – Mar 3, 1879	Democratic	James B. Eustis	13
16	William Pitt Kellogg	Republican	Mar 4, 1877 – Mar 3, 1883	Elected in 1876. Retired to run for U.S. House.	12	45th			Jan 12, 1876 – Mar 3, 1879	Democratic	James B. Eustis	13
						46th	13	Elected in 1879. Lost re-election.	Mar 4, 1879 – Mar 3, 1885	Democratic	Benjamin F. Jonas	14
						47th
17	Randall L. Gibson	Democratic	Mar 4, 1883 – Dec 15, 1892	Elected in 1882.	13	48th
						49th	14	Election year unknown. Retired.	Mar 4, 1885 – Mar 3, 1891	Democratic	James B. Eustis	15
						50th
				Re-elected in 1889. Died.	14	51st
				Re-elected in 1889. Died.		52nd	15	Elected in 1891. Resigned to become U.S. Supreme Court Justice.	Mar 4, 1891 – Mar 12, 1894	Democratic	Edward Douglass White	16
Vacant			Dec 15, 1892 – Dec 31, 1892
18	Donelson Caffery	Democratic	Dec 31, 1892 – Mar 3, 1901	Appointed to continue Gibson's term. Elected in 1894 to finish Gibson's term.^[3]
						53rd
						53rd		Appointed to continue White's term. Elected in 1894 to finish White's term.^[4] Retired.	Mar 12, 1894 – Mar 3, 1897	Democratic	Newton C. Blanchard	17
				Elected in 1894 to the next term, before election to finish Gibson's term. Retired.	15	54th			Mar 12, 1894 – Mar 3, 1897	Democratic	Newton C. Blanchard	17
						55th	16	Elected in 1896.^[5]	Mar 4, 1897 – Jun 28, 1910	Democratic	Samuel D. McEnery	18
						56th
19	Murphy J. Foster	Democratic	Mar 4, 1901 – Mar 3, 1913	Elected in 1900.^[6]	16	57th
						58th	17	Re-elected early in 1900.^[6]
						59th
				Re-elected early in 1904.^[7] Lost renomination.	17	60th
						61st	18	Re-elected in 1908.^[8] Died.
									Jun 28, 1910 – Dec 7, 1910	Vacant
								Elected to finish McEnery's term.^[4] Retired.	Dec 7, 1910 – Mar 3, 1915	Democratic	John Thornton	19
						62nd
20	Joseph E. Ransdell	Democratic	Mar 4, 1913 – Mar 3, 1931	Elected in 1912.	18	63rd
						64th	19	Elected early in 1912. Died.	Mar 4, 1915 – Apr 12, 1918	Democratic	Robert F. Broussard	20
						65th		Elected early in 1912. Died.	Mar 4, 1915 – Apr 12, 1918	Democratic	Robert F. Broussard	20
									Apr 12, 1918 – Apr 22, 1918	Vacant
								Appointed to continue Broussard's term. Retired when elected successor qualified.	Apr 22, 1918 – Nov 5, 1918	Democratic	Walter Guion	21
								Elected to finish Broussard's term. Retired.	Nov 6, 1918 – Mar 3, 1921	Democratic	Edward J. Gay	22
				Re-elected in 1918.	19	66th		Elected to finish Broussard's term. Retired.	Nov 6, 1918 – Mar 3, 1921	Democratic	Edward J. Gay	22
						67th	20	Elected in 1920.	Mar 4, 1921 – Mar 3, 1933	Democratic	Edwin S. Broussard	23
						68th
				Re-elected in 1924. Lost renomination.	20	69th
						70th	21	Re-elected in 1926. Lost renomination.
						71st
Vacant			Mar 4, 1931 – Jan 25, 1932		21	72nd
21	Huey Long	Democratic	Jan 25, 1932 – Sep 10, 1935	Elected in 1930, but continued to serve as Louisiana governor until Jan 25, 1932. Assassinated.		72nd
						73rd	22	Elected in 1932.	Mar 4, 1933 – May 14, 1948	Democratic	John Overton	24
						74th
Vacant			Sep 10, 1935 – Jan 31, 1936
22	Rose M. Long	Democratic	Jan 31, 1936 – Jan 3, 1937	Appointed to continue her husband's term. Elected in 1936 to finish her husband's term.^[3] Retired.
23	Allen Ellender	Democratic	Jan 3, 1937 – July 27, 1972	Elected in 1936.	22	75th
						76th	23	Re-elected in 1938.
						77th
				Re-elected in 1942.	23	78th
						79th	24	Re-elected in 1944. Died.
						80th		Re-elected in 1944. Died.
									May 14, 1948 – May 18, 1948	Vacant
								Appointed to continue Overton's term. Retired when elected successor qualified.	May 18, 1948 – Dec 30, 1948	Democratic	William C. Feazel	25
								Elected to finish Overton's term.	Dec 31, 1948 – Jan 3, 1987	Democratic	Russell Long	26
				Re-elected in 1948.	24	81st		Elected to finish Overton's term.
						82nd	25	Re-elected in 1950.
						83rd
				Re-elected in 1954.	25	84th
						85th	26	Re-elected in 1956.
						86th
				Re-elected in 1960.	26	87th
						88th	27	Re-elected in 1962.
						89th
				Re-elected in 1966. Died.	27	90th
						91st	28	Re-elected in 1968.
						92nd
Vacant			Jul 27, 1972 – Aug 1, 1972
24	Elaine Edwards	Democratic	Aug 1, 1972 – Nov 13, 1972	Appointed by her husband to continue Ellender's term. Retired when successor qualified and resigned early.
25	J. Bennett Johnston	Democratic	Nov 14, 1972 – Jan 3, 1997	Appointed to finish Ellender's term, having already been elected to the next term.
				Elected in 1972.	28	93rd
						94th	29	Re-elected in 1974.
						95th
				Re-elected in 1978.	29	96th
						97th	30	Re-elected in 1980. Retired.
						98th
				Re-elected in 1984.	30	99th
						100th	31	Elected in 1986.	Jan 3, 1987 – Jan 3, 2005	Democratic	John Breaux	27
						101st
				Re-elected in 1990. Retired.	31	102nd
						103rd	32	Re-elected in 1992.
						104th
26	Mary Landrieu	Democratic	Jan 3, 1997 – Jan 3, 2015	Elected in 1996.	32	105th
						106th	33	Re-elected in 1998. Retired.
						107th
				Re-elected in 2002 in runoff election.	33	108th
						109th	34	Elected in 2004.	Jan 3, 2005 – Jan 3, 2017	Republican	David Vitter	28
						110th
				Re-elected in 2008. Lost re-election.	34	111th
						112th	35	Re-elected in 2010. Retired.^[9]
						113th
27	Bill Cassidy	Republican	Jan 3, 2015 – present	Elected in 2014 in runoff election.	35	114th
						115th	36	Elected in 2016 in runoff election.	Jan 3, 2017 – present	Republican	John Kennedy	29
						116th
				Re-elected in 2020.	36	117th
						118th	37	Re-elected in 2022.
						119th
To be determined in the 2026 election.					37	120th
To be determined in the 2026 election.					37	121st	38	To be determined in the 2028 election.
#	Senator	Party	Years in office	Electoral history	T	C	T	Electoral history	Years in office	Party	Senator	#
Class 2						C	Class 3