Member Party Years Cong ress Electoral history John Vining (Dover ) Pro- Administration March 4, 1789 – March 3, 1793 1st 2nd Elected in 1789 .Re-elected in 1790 . Retired. John Patten (Dover ) Anti- Administration March 4, 1793 – February 14, 1794 3rd Elected in 1792 . Lost election contest. Henry Latimer (Newport ) Pro- Administration February 14, 1794 – February 7, 1795 3rd Won election contest. Lost re-election. John Patten (Dover ) Democratic- Republican March 4, 1795 – March 3, 1797 4th Elected in 1794 . Retired. James A. Bayard (Wilmington ) Federalist March 4, 1797 – March 3, 1803 5th 6th 7th Elected in 1796 .Re-elected in 1798 .Re-elected in 1800 . Lost re-election. Caesar Augustus Rodney (Wilmington ) Democratic- Republican March 4, 1803 – March 3, 1805 8th Elected in 1802 . Lost re-election.Vacant March 4, 1805 – October 1, 1805 9th James A. Bayard was elected in 1804 but declined to serve, having also been elected U.S. senator. James M. Broom (Wilmington ) Federalist October 1, 1805 – October 6, 1807 9th 10th Elected October 1, 1805 to finish Bayard's term and seated December 2, 1805.Re-elected in 1806 , but declined the seat. Nicholas Van Dyke (New Castle ) Federalist October 6, 1807 – March 3, 1811 10th 11th Elected to finish Broom's term .Re-elected in 1808 . Retired. Henry M. Ridgely (Dover ) Federalist March 4, 1811 – March 3, 1815 12th 13th Elected in 1810 .Re-elected in 1812 . Retired. Thomas Clayton (Dover ) Federalist March 4, 1815 – March 3, 1817 14th Elected in 1814 . Lost re-election. Louis McLane (Wilmington ) Federalist [a] March 4, 1817 – March 3, 1825 15th 16th 17th 18th 19th Elected in 1816 .Re-elected in 1818 .Re-elected in 1820 .Re-elected in 1822 .Re-elected in 1824 .Re-elected in 1826 but declined to serve having been elected U.S. senator .Jacksonian March 4, 1825 – March 3, 1827 Vacant March 3, 1827 – October 2, 1827 20th Kensey Johns Jr. (New Castle ) Anti- Jacksonian October 2, 1827 – March 3, 1831 20th 21st Elected October 2, 1827 to finish McLane's term and seated December 3, 1827.Re-elected in 1828 . Retired. John J. Milligan (Wilmington ) Anti- Jacksonian March 4, 1831 – March 3, 1837 22nd 23rd 24th 25th Elected in 1830 .Re-elected in 1832 .Re-elected in 1834 .Re-elected in 1836 . Lost re-election.Whig March 4, 1837 – March 3, 1839 Thomas Robinson Jr. (Georgetown ) Democratic March 4, 1839 – March 3, 1841 26th Elected in 1838 . Lost re-election. George B. Rodney (New Castle ) Whig March 4, 1841 – March 3, 1845 27th 28th Elected in 1840 .Re-elected in 1842 . Retired. John W. Houston (Georgetown ) Whig March 4, 1845 – March 3, 1851 29th 30th 31st Elected in 1844 .Re-elected in 1846 .Re-elected in 1848 . Retired. George R. Riddle (Wilmington ) Democratic March 4, 1851 – March 3, 1855 32nd 33rd Elected in 1850 .Re-elected in 1852 . Lost re-election.Elisha D. Cullen (Georgetown ) Know Nothing March 4, 1855 – March 3, 1857 34th Elected in 1854 . Lost re-election. William G. Whiteley (New Castle ) Democratic March 4, 1857 – March 3, 1861 35th 36th Elected in 1856 .Re-elected in 1858 . Retired. George P. Fisher (Dover ) Unionist March 4, 1861 – March 3, 1863 37th Elected in 1860 . Lost re-election. William Temple (Smyrna ) Democratic March 4, 1863 – May 28, 1863 38th Elected in 1862 . Died.Vacant May 28, 1863 – December 7, 1863 38th Nathaniel B. Smithers (Dover ) Unconditional Unionist December 7, 1863 – March 3, 1865 38th Elected to finish Temple's term . Lost re-election. John A. Nicholson (Dover ) Democratic March 4, 1865 – March 3, 1869 39th 40th Elected in 1864 .Re-elected in 1866 . Retired. Benjamin T. Biggs (Summit Bridge ) Democratic March 4, 1869 – March 3, 1873 41st 42nd Elected in 1868 .Re-elected in 1870 . Retired.James R. Lofland (Milford ) Republican March 4, 1873 – March 3, 1875 43rd Elected in 1872 . Lost re-election. James Williams (Kenton ) Democratic March 4, 1875 – March 3, 1879 44th 45th Elected in 1874 .Re-elected in 1876 . Retired.Edward L. Martin (Seaford ) Democratic March 4, 1879 – March 3, 1883 46th 47th Elected in 1878 .Re-elected in 1880 . Retired. Charles B. Lore (Wilmington ) Democratic March 4, 1883 – March 3, 1887 48th 49th Elected in 1882 .Re-elected in 1884 . Retired. John B. Penington (Dover ) Democratic March 4, 1887 – March 3, 1891 50th 51st Elected in 1886 .Re-elected in 1888 . Retired. John W. Causey (Milford ) Democratic March 4, 1891 – March 3, 1895 52nd 53rd Elected in 1890 .Re-elected in 1892 . Retired. Jonathan S. Willis (Milford ) Republican March 4, 1895 – March 3, 1897 54th Elected in 1894 . Lost re-election. L. Irving Handy (Newark ) Democratic March 4, 1897 – March 3, 1899 55th Elected in 1896 . Lost re-election. John H. Hoffecker (Smyrna ) Republican March 4, 1899 – June 16, 1900 56th Elected in 1898 . Died.Vacant June 16, 1900 – November 6, 1900 Walter O. Hoffecker (Smyrna ) Republican November 6, 1900 – March 3, 1901 Elected to finish his father's term . Retired. L. Heisler Ball (Faulkland ) Republican March 4, 1901 – March 3, 1903 57th Elected in 1900 . Retired to run for U.S. senator . Henry A. Houston (Millsboro ) Democratic March 4, 1903 – March 3, 1905 58th Elected in 1902 . Retired. Hiram R. Burton (Lewes ) Republican March 4, 1905 – March 3, 1909 59th 60th Elected in 1904 .Re-elected in 1906 . Lost renomination. William H. Heald (Wilmington ) Republican March 4, 1909 – March 3, 1913 61st 62nd Elected in 1908 .Re-elected in 1910 . Retired. Franklin Brockson (Clayton ) Democratic March 4, 1913 – March 3, 1915 63rd Elected in 1912 . Lost re-election. Thomas W. Miller (Wilmington ) Republican March 4, 1915 – March 3, 1917 64th Elected in 1914 . Lost re-election. Albert F. Polk (Georgetown ) Democratic March 4, 1917 – March 3, 1919 65th Elected in 1916 . Lost re-election. Caleb R. Layton (Georgetown ) Republican March 4, 1919 – March 3, 1923 66th 67th Elected in 1918 .Re-elected in 1920 . Lost re-election. William H. Boyce (Dover ) Democratic March 4, 1923 – March 3, 1925 68th Elected in 1922 . Lost re-election. Robert G. Houston (Georgetown ) Republican March 4, 1925 – March 3, 1933 69th 70th 71st 72nd Elected in 1924 .Re-elected in 1926 .Re-elected in 1928 .Re-elected in 1930 . Retired.Wilbur L. Adams (Wilmington ) Democratic March 4, 1933 – January 3, 1935 73rd Elected in 1932 . Retired to run for U.S. senator . J. George Stewart (Wilmington ) Republican January 3, 1935 – January 3, 1937 74th Elected in 1934 . Lost re-election.William F. Allen (Seaford ) Democratic January 3, 1937 – January 3, 1939 75th Elected in 1936 . Lost re-election.George S. Williams (Millsboro ) Republican January 3, 1939 – January 3, 1941 76th Elected in 1938 . Lost re-election.Philip A. Traynor (Wilmington ) Democratic January 3, 1941 – January 3, 1943 77th Elected in 1940 . Lost re-election.Earle D. Willey (Dover ) Republican January 3, 1943 – January 3, 1945 78th Elected in 1942 . Lost re-election.Philip A. Traynor (Wilmington ) Democratic January 3, 1945 – January 3, 1947 79th Elected in 1944 . Lost re-election. J. Caleb Boggs (Wilmington ) Republican January 3, 1947 – January 3, 1953 80th 81st 82nd Elected in 1946 .Re-elected in 1948 .Re-elected in 1950 . Retired to run for Governor of Delaware . Herbert Warburton (Wilmington ) Republican January 3, 1953 – January 3, 1955 83rd Elected in 1952 . Retired to run for U.S. senator . Harris McDowell (Middletown ) Democratic January 3, 1955 – January 3, 1957 84th Elected in 1954 . Lost re-election. Harry G. Haskell Jr. (Wilmington ) Republican January 3, 1957 – January 3, 1959 85th Elected in 1956 . Lost re-election. Harris McDowell (Middletown ) Democratic January 3, 1959 – January 3, 1967 86th 87th 88th 89th Elected in 1958 .Re-elected in 1960 .Re-elected in 1962 .Re-elected in 1964 . Lost re-election. William Roth (Wilmington ) Republican January 3, 1967 – December 31, 1970 90th 91st Elected in 1966 .Re-elected in 1968 . Retired to run for U.S. senator and resigned after the election.Vacant December 31, 1970 – January 3, 1971 91st Pete du Pont (Rockland ) Republican January 3, 1971 – January 3, 1977 92nd 93rd 94th Elected in 1970 .Re-elected in 1972 .Re-elected in 1974 . Retired to run for Governor of Delaware . Thomas B. Evans Jr. (Wilmington ) Republican January 3, 1977 – January 3, 1983 95th 96th 97th Elected in 1976 .Re-elected in 1978 .Re-elected in 1980 . Lost re-election. Tom Carper (Wilmington ) Democratic January 3, 1983 – January 3, 1993 98th 99th 100th 101st 102nd Elected in 1982 .Re-elected in 1984 .Re-elected in 1986 .Re-elected in 1988 .Re-elected in 1990 . Retired to run for Governor of Delaware . Mike Castle (Wilmington ) Republican January 3, 1993 – January 3, 2011 103rd 104th 105th 106th 107th 108th 109th 110th 111th Elected in 1992 .Re-elected in 1994 .Re-elected in 1996 .Re-elected in 1998 .Re-elected in 2000 .Re-elected in 2002 .Re-elected in 2004 .Re-elected in 2006 .Re-elected in 2008 . Retired to run for U.S. senator . John Carney (Wilmington ) Democratic January 3, 2011 – January 3, 2017 112th 113th 114th Elected in 2010 .Re-elected in 2012 .Re-elected in 2014 . Retired to run for Governor of Delaware . Lisa Blunt Rochester (Wilmington ) Democratic January 3, 2017 – present 115th 116th 117th 118th Elected in 2016 .Re-elected in 2018 .Re-elected in 2020 .Re-elected in 2022 . Retiring at the end of term to run for U.S. Senator .