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|Dean of United States Senate|
|Member of||United States Senate|
|First holder||James Gunn|
The Dean of the United States Senate is an informal term for the Senator with the longest continuous service, regardless of party affiliation. This is not an official position within the Senate, although customarily (since 1945) the longest-serving member of the majority party serves as President pro tempore.
The current Dean is Democratic Senator Patrick Leahy of Vermont. He has been in the Senate since 1975, and became Dean in 2012 with the death in office of Daniel Inouye.
|Dean||Party||State||Years as Dean||First served|
|James Gunn|| Anti-Admin,|
|John Langdon||Democratic-Republican||New Hampshire|
|Theodore Foster||Democratic-Republican||Rhode Island||1801–1803||1790|
|John Gaillard||Democratic-Republican||South Carolina||1815–1826||1804|
|William R. King||Democratic||Alabama||1833–1844||1819|
|Thomas Hart Benton||Democratic||Missouri||1844–1851||1821|
|Willie Person Mangum||Whig||North Carolina||1851–1853||1831, 1840|
|James A. Bayard Jr.||Democratic||Delaware||1862–1864||1851|
|Benjamin F. Wade||Republican||Ohio||1866–1869|
|Henry B. Anthony||Republican||Rhode Island||1875–1884||1859|
|George F. Edmunds||Republican||Vermont||1884–1891||1866|
|Justin Smith Morrill||Republican||Vermont||1891–1898||1867|
|William B. Allison||Republican||Iowa||1898–1908||1873|
|William P. Frye||Republican||Maine||1911||1881|
|Shelby Moore Cullom||Republican||Illinois||1911–1913||1883|
|Jacob Harold Gallinger||Republican||New Hampshire||1913–1918||1891|
|Henry Cabot Lodge||Republican||Massachusetts||1918–1924||1893|
|Francis E. Warren||Republican||Wyoming||1924–1929||1895|
|Furnifold McLendel Simmons||Democratic||North Carolina||1929–1931||1901|
|William Edgar Borah||Republican||Idaho||1933–1940||1907|
|Ellison D. Smith||Democratic||South Carolina||1940–1944||1909|
|Walter F. George||Democratic||Georgia||1953–1957||1922|
|Richard Russell Jr.||Democratic||Georgia||1969–1971||1933|
|Allen J. Ellender||Democratic||Louisiana||1971–1972||1937|
|George D. Aiken||Republican||Vermont||1972–1975||1941|
|James Eastland||Democratic||Mississippi||1975–1977||1941, 1943|
|John L. McClellan||Democratic||Arkansas||1943|
|James Eastland||Democratic||Mississippi||1977–1978||1941, 1943|
|Warren G. Magnuson||Democratic||Washington||1978–1981||1944|
|John C. Stennis||Democratic||Mississippi||1981–1989||1947|
|Strom Thurmond||Republican||South Carolina||1989–2003||1954, 1956|
|Robert Byrd||Democratic||West Virginia||2003–2010||1959|
For additional information, here is a list of most senior Senators by party, listed in reverse chronological order.
The 100 US Senate seats are classified into three classes of United States senators, two of which consist of 33 seats and one of 34 seats. The classes determine which Senate seats will be up for election in any two-year cycle, with only one class being up for election, so that elections for class 1 seats took place in 2018, for class 2 in 2020, and the elections for class 3 seats will be held in 2022.
James Asheton Bayard Jr. was an American lawyer and politician from Delaware. He was a member of the Democratic Party and served as U.S. Senator from Delaware.
The Bayard family has been a prominent family of lawyers and politicians throughout American history, primarily from Wilmington, Delaware. Beginning as Federalists, they joined the party of Andrew Jackson and remained leaders of the Democratic Party into the 20th century. Counting Richard Bassett, the father-in-law of James A. Bayard, Sr., the family provided six generations of U.S. Senators from Delaware, serving from 1789 until 1929.
The Livingston family of New York is a prominent family that migrated from Scotland to the Dutch Republic, and then to the Province of New York in the 17th century. Descended from the 4th Lord Livingston, its members included signers of the United States Declaration of Independence and the United States Constitution. Several members were Lords of Livingston Manor and Clermont Manor, located along the Hudson River in 18th-century eastern New York.
Events from the year 1785 in the United States.
Events from the year 1789 in the United States. The Articles of Confederation, the agreement under which the nation's government had been operating since 1781, was superseded by the Constitution in March of this year.
Events from the year 1796 in the United States.
The Van Rensselaer family is a family of Dutch descent that was prominent during the 17th, 18th, and 19th centuries in the area now known as the state of New York. Members of this family played a critical role in the formation of the United States and served as leaders in business, politics and society.