Vermont was admitted to the Union on March 4, 1791. From the 1850s until well into the 20th century, Vermont was always represented by members of the Republican Party. Democrat Patrick Leahy (served 1975–2023) was the longest serving US senator. Its current members of the United States Senate are Independent Bernie Sanders (since 2007) and Democrat Peter Welch (since 2023). Both senators served in the United States House of Representatives immediately prior, where they represented Vermont's only House district.

List of senators

Oct 17, 1791 Oct 17, 1791 ! rowspan=3 | 1 Moses Robinson Admin.]] Oct 15, 1796 Mar 3, 1795 Admin.]] Stephen R. Bradley ! rowspan=2 | 1 Republican]] Sep 1, 1801 Elijah Paine ! rowspan=7 | 2 Oct 18, 1796 ! rowspan=2 | 2 Isaac Tichenor Oct 17, 1797 ! rowspan=5 | 3 Nathaniel Chipman Mar 3, 1803 Oct 15, 1801 Mar 3, 1813 Republican]] Stephen R. Bradley ! rowspan=8 | 3 ! rowspan=3 | 4 Israel Smith Republican]] Oct 1, 1807 Oct 10, 1807 ! rowspan=4 | 5 Republican]] Mar 3, 1815 Nov 3, 1817 Republican]] ! rowspan=3 | 4 ! rowspan=6 | 6 Isaac Tichenor Mar 3, 1821 Jan 8, 1818 Republican]] James Fisk ! 5 Oct 20, 1818 Mar 3, 1825 Republican]] William A. Palmer ! rowspan=4 | 6 ! rowspan=6 | 7 Horatio Seymour Republican]] Mar 3, 1833 Republican]] Mar 3, 1831 Republican]] ! rowspan=3 | 7 Apr 11, 1842 Republican]] Samuel Prentiss ! rowspan=6 | 8 ! rowspan=3 | 8 Benjamin Swift Republican]] Mar 3, 1839 ! rowspan=8 | 9 Samuel S. Phelps Mar 3, 1851 Apr 23, 1842 Mar 3, 1843 Samuel C. Crafts ! 9 Jan 14, 1853 William Upham ! rowspan=5 | 10 ! rowspan=14 | 10 Solomon Foot Mar 28, 1866 Jan 17, 1853 Mar 16, 1854 Samuel S. Phelps ! rowspan=2 | 11 Oct 14, 1854 Mar 3, 1855 Lawrence Brainerd ! 12 Nov 9, 1865 Jacob Collamer ! rowspan=6 | 13 Nov 21, 1865 Mar 3, 1867 Luke P. Poland ! rowspan=3 | 14 Apr 3, 1866 ! rowspan=14 | 11 George F. Edmunds Nov 1, 1891 Dec 28, 1898 Justin S. Morrill ! rowspan=17 | 15 ! rowspan=12 | 12 Redfield Proctor Mar 4, 1908 Jan 11, 1899 Oct 18, 1900 Jonathan Ross ! rowspan=2 | 16 Jul 12, 1923 William P. Dillingham ! rowspan=16 | 17 Mar 24, 1908 ! 13 John W. Stewart Oct 21, 1908 ! rowspan=8 | 14 Carroll S. Page Mar 3, 1923 ! rowspan=6 | 15 Frank L. Greene Dec 17, 1930 Nov 7, 1923 Oct 6, 1933 Porter H. Dale ! rowspan=9 | 18 Dec 23, 1930 ! rowspan=2 | 16 Frank C. Partridge Mar 31, 1931 ! rowspan=12 | 17 Warren Austin Aug 2, 1946 Nov 21, 1933 Jun 20, 1940 Ernest W. Gibson ! rowspan=4 | 19 Jun 24, 1940 Jan 3, 1941 Ernest Gibson Jr. ! 20 Jan 3, 1975 George Aiken ! rowspan=21 | 21 Nov 1, 1946 ! rowspan=7 | 18 Ralph Flanders Jan 3, 1959 ! rowspan=7 | 19 Winston L. Prouty Sep 10, 1971 Sep 16, 1971 ! rowspan=9 | 20 Robert Stafford Jan 3, 1989 Jan 3, 2023 Patrick Leahy ! rowspan=25 | 22 ! rowspan=10 | 21 Jim Jeffords Jan 3, 2007 ! rowspan=12 | 22 Bernie Sanders present Peter Welch ! rowspan=3 | 23

Sources