Member | Party | Term | Congress | 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) | Union | 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) | Union | 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. |
Sarah McBride (elect) (Wilmington) | Democratic | January 3, 2025 | | Elected in 2024. |