Pennsylvania's twentieth congressional district was a congressional district in southwestern Pennsylvania. It was created following the 1830 Census and was disbanded after the 2000 Census removed two representatives from Pennsylvania. The 18th district is generally considered to be its successor, although the 12th district contains some of its territory.

List of members representing the district

Representatives	Party	Years	Cong ress	Electoral history
District created March 4, 1833
Andrew Stewart	Anti-Masonic	March 4, 1833 – March 3, 1835	23rd	Redistricted from the 14th district and re-elected in 1832. [data unknown/missing]
Andrew Buchanan	Jacksonian	March 4, 1835 – March 3, 1837	24th 25th	Elected in 1834. Re-elected in 1836. [data unknown/missing]
	Democratic	March 4, 1837 – March 3, 1839
Enos Hook	Democratic	March 4, 1839 – April 18, 1841	26th 27th	Elected in 1838. Re-elected in 1840. Resigned.
Vacant		April 18, 1841 – May 31, 1841	27th
Henry W. Beeson	Democratic	May 31, 1841 – March 3, 1843		Elected to finish Hook's term. [data unknown/missing]
John Dickey	Whig	March 4, 1843 – March 3, 1845	28th	Elected in 1843. [data unknown/missing]
John H. Ewing	Whig	March 4, 1845 – March 3, 1847	29th	Elected in 1844. [data unknown/missing]
John Dickey	Whig	March 4, 1847 – March 3, 1849	30th	Elected in 1846. [data unknown/missing]
Robert R. Reed	Whig	March 4, 1849 – March 3, 1851	31st	Elected in 1848. [data unknown/missing]
John Allison	Whig	March 4, 1851 – March 3, 1853	32nd	Elected in 1850. [data unknown/missing]
John L. Dawson	Democratic	March 4, 1853 – March 3, 1855	33rd	Redistricted from the 18th district and re-elected in 1852. [data unknown/missing]
Jonathan Knight	Opposition	March 4, 1855 – March 3, 1857	34th	Elected in 1854. [data unknown/missing]
William Montgomery	Democratic	March 4, 1857 – March 3, 1861	35th 36th	Elected in 1856. Re-elected in 1858. [data unknown/missing]
Jesse Lazear	Democratic	March 4, 1861 – March 3, 1863	37th	Elected in 1860. Redistricted to the 24th district.
Amos Myers	Republican	March 4, 1863 – March 3, 1865	38th	Elected in 1862. [data unknown/missing]
Charles V. Culver	Republican	March 4, 1865 – March 3, 1867	39th	Elected in 1864. [data unknown/missing]
Darwin A. Finney	Republican	March 4, 1867 – August 25, 1868	40th	Elected in 1866. Died.
Vacant		August 25, 1868 – December 7, 1868
S. Newton Pettis	Republican	December 7, 1868 – March 3, 1869		Elected to finish Finney's term. [data unknown/missing]
Calvin W. Gilfillan	Republican	March 4, 1869 – March 3, 1871	41st	Elected in 1868. [data unknown/missing]
Samuel Griffith	Democratic	March 4, 1871 – March 3, 1873	42nd	Elected in 1870. [data unknown/missing]
Hiram L. Richmond	Republican	March 4, 1873 – March 3, 1875	43rd	Elected in 1872. [data unknown/missing]
Levi A. Mackey	Democratic	March 4, 1875 – March 3, 1879	44th 45th	Elected in 1874. Re-elected in 1876. [data unknown/missing]
Seth H. Yocum	Greenback	March 4, 1879 – March 3, 1881	46th	Elected in 1878. [data unknown/missing]
Andrew G. Curtin	Democratic	March 4, 1881 – March 3, 1887	47th 48th 49th	Elected in 1880. Re-elected in 1882. Re-elected in 1884. [data unknown/missing]
John Patton	Republican	March 4, 1887 – March 3, 1889	50th	Elected in 1886. [data unknown/missing]
Edward Scull	Republican	March 4, 1889 – March 3, 1893	51st 52nd	Redistricted from the 17th district and re-elected in 1888. Re-elected in 1890. [data unknown/missing]
Josiah D. Hicks	Republican	March 4, 1893 – March 3, 1899	53rd 54th 55th	Elected in 1892. Re-elected in 1894. Re-elected in 1896. [data unknown/missing]
Joseph E. Thropp	Republican	March 4, 1899 – March 3, 1901	56th	Elected in 1898. [data unknown/missing]
Alvin Evans	Republican	March 4, 1901 – March 3, 1903	57th	Elected in 1900. Redistricted to the 19th district.
Daniel F. Lafean	Republican	March 4, 1903 – March 3, 1913	58th 59th 60th 61st 62nd	Elected in 1902. Re-elected in 1904. Re-elected in 1906. Re-elected in 1908. Re-elected in 1910. [data unknown/missing]
Andrew R. Brodbeck	Democratic	March 4, 1913 – March 3, 1915	63rd	Elected in 1912. [data unknown/missing]
Cyrus W. Beales	Republican	March 4, 1915 – March 3, 1917	64th	Elected in 1914. [data unknown/missing]
Andrew R. Brodbeck	Democratic	March 4, 1917 – March 3, 1919	65th	Elected in 1916. [data unknown/missing]
Edward S. Brooks	Republican	March 4, 1919 – March 3, 1923	66th 67th	Elected in 1918. Re-elected in 1920. [data unknown/missing]
George M. Wertz	Republican	March 4, 1923 – March 3, 1925	68th	Elected in 1922. [data unknown/missing]
Anderson H. Walters	Republican	March 4, 1925 – March 3, 1927	69th	Elected in 1924. [data unknown/missing]
J. Russell Leech	Republican	March 4, 1927 – January 29, 1932	70th 71st 72nd	Elected in 1926. Re-elected in 1928. Re-elected in 1930. Resigned to become a member of the U.S. Board of Tax Appeals
Vacant		January 29, 1932 – April 26, 1932	72nd
Howard W. Stull	Republican	April 26, 1932 – March 3, 1933		Elected to finish Leech's term. [data unknown/missing]
Thomas C. Cochran	Republican	March 4, 1933 – January 3, 1935	73rd	Redistricted from the 28th district and re-elected in 1932. [data unknown/missing]
Denis J. Driscoll	Democratic	January 3, 1935 – January 3, 1937	74th	Elected in 1934. [data unknown/missing]
Benjamin Jarrett	Republican	January 3, 1937 – January 3, 1943	75th 76th 77th	Elected in 1936. Re-elected in 1938. Re-elected in 1940. [data unknown/missing]
Leon H. Gavin	Republican	January 3, 1943 – January 3, 1945	78th	Elected in 1942. Redistricted to the 19th district.
Francis E. Walter	Democratic	January 3, 1945 – January 3, 1953	79th 80th 81st 82nd	Redistricted from the 21st district and re-elected in 1944. Re-elected in 1946. Re-elected in 1948. Re-elected in 1950. Redistricted to the 15th district.
James E. Van Zandt	Republican	January 3, 1953 – January 3, 1963	83rd 84th 85th 86th 87th	Redistricted from the 22nd district and re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Re-elected in 1958. Re-elected in 1960. [data unknown/missing]
Elmer J. Holland	Democratic	January 3, 1963 – August 9, 1968	88th 89th 90th	Redistricted from the 30th district and re-elected in 1962. Re-elected in 1964. Re-elected in 1966. Died.
Vacant		August 9, 1968 – November 5, 1968	90th
Joseph M. Gaydos	Democratic	November 5, 1968 – January 3, 1993	90th 91st 92nd 93rd 94th 95th 96th 97th 98th 99th 100th 101st 102nd	Elected to finish Holland's term. Re-elected in 1968. Re-elected in 1970. Re-elected in 1972. Re-elected in 1974. Re-elected in 1976. Re-elected in 1978. Re-elected in 1980. Re-elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Re-elected in 1990. [data unknown/missing]
Austin Murphy	Democratic	January 3, 1993 – January 3, 1995	103rd	Redistricted from the 22nd district and re-elected in 1992. [data unknown/missing]
Frank Mascara	Democratic	January 3, 1995 – January 3, 2003	104th 105th 106th 107th	Elected in 1994. Re-elected in 1996. Re-elected in 1998. Re-elected in 2000. Redistricted to the 18th district but moved to and lost renomination in the 12th district.
District eliminated January 3, 2003

Recent electoral history

This list is incomplete; you can help by adding missing items. (August 2008)

Source: "Election Statistics". Office of the Clerk of the House of Representatives. Retrieved 2007-08-08.

References

• Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
• Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
• Congressional Biographical Directory of the United States 1774–present