Pennsylvania's 4th congressional district

From 2003 to 2013 the district included suburbs of Pittsburgh as well as Beaver County, Lawrence County, and Mercer County. The district had a slight Democratic registration edge, although it had voted for Republicans in several federal elections over the 2000s decade, including for President George W. Bush in 2000 and 2004, as well as Lynn Swann for governor in 2006. The heart of the district was a string of mostly white and middle class suburbs. Plum and Murrysville, two large and mainly residential boroughs, are the main towns in the suburban portion of the district that lies to the east of the city. Also included were the many suburban areas that make up northern Allegheny County and southern Butler County, Pennsylvania, including the larger communities of McCandless and Franklin Park, as well as several exclusive suburbs that have long been home to Pittsburgh's old money elite, including Fox Chapel and Sewickley. The northern suburbs had a generally moderate voting populace, which trends Democratic but makes up the swing vote, especially in races for national office. Further north, the district took on a different character. The suburban areas of Beaver County are somewhat less affluent and were heavily labor Democratic. The areas of Lawrence County and Mercer County had a more rural feel, but also had a union Democrat center within the city of New Castle.

This district changed drastically when Pennsylvania's new districts went into effect on January 3, 2013. Due to slower population growth than the nation as a whole, Pennsylvania lost a seat in Congress in reapportionment following the 2010 United States Census, and this seat was effectively eliminated. Most of the 4th district was merged into a redrawn 12th district, and the previous 19th district was rebranded as the 4th. Thus from 2013 to 2018, the 4th district was located in south-central Pennsylvania and included all of Adams and York counties, as well as parts of Cumberland and Dauphin counties. During this time, the district was represented by Republican Scott Perry.

The Supreme Court of Pennsylvania redrew the state's congressional districts in February 2018 after ruling the previous map unconstitutional due to gerrymandering. The fourth district was reconfigured as a Democratic-leaning area to the northwest of Philadelphia for the 2018 election and representation thereafter. Geographically, it is the successor to the old 13th district, which was represented at the time by Democrat Brendan Boyle. Boyle, however, opted to run in the neighboring 2nd district, the geographic successor to the 1st district, represented by retiring incumbent Bob Brady. The bulk of Perry's representation, including York and Harrisburg, became part of a redrawn tenth district. Gettysburg and Adams County joined a new, heavily Republican 13th District, which was the successor to the old ninth district of retiring Congressman Bill Shuster. Areas to the south and east of York joined Lancaster in a redrawn, heavily Republican eleventh district, the successor of Republican Lloyd Smucker's 16th district.[3]

The district was organized from the Pennsylvania's at-large congressional district in 1791

1795–1843: Two, then one, then three seats

District created in 1795 with two seats from the Pennsylvania's at-large congressional district. The second seat was eliminated in 1813. The second seat was restored in 1823 along with a third seat.

Cong ress	Years		Seat A				Seat B				Seat C
			Representative	Party	Electoral history		Representative	Party	Electoral history		Representative	Party	Electoral history
4th	March 4, 1795 – March 3, 1797		Samuel Sitgreaves	Federalist	Elected in 1794. Re-elected in 1796. Resigned.		John Richards	Democratic-Republican	Elected in 1794. Lost re-election.		No third seat until 1823
5th	March 4, 1797 – August 29, 1798						John Chapman	Federalist	Elected in 1796. Lost re-election.
	August 29, 1798 – December 4, 1798		Vacant
	December 4, 1798 – March 3, 1799		Robert Brown	Democratic-Republican	Elected October 9, 1798 to finish Sitgreaves's term and seated December 4, 1798. Also elected October 9, 1798 to the next term. Re-elected in 1800. Redistricted to the 2nd district.
6th	March 4, 1799 – March 3, 1801						Peter Muhlenberg	Democratic-Republican	Elected in 1798. Elected in 1800 but declined the seat when elected U.S. Senator.
7th	March 4, 1801 – December 7, 1801						Vacant
	December 7, 1801 – March 3, 1803						Isaac Van Horne	Democratic-Republican	Elected October 13, 1801 to finish Muhlenberg's term and seated December 7, 1801. Redistricted to the 2nd district.
8th	March 4, 1803 – March 3, 1805		John A. Hanna	Democratic-Republican	Redistricted from the 6th district and re-elected in 1802. Died.		David Bard	Democratic-Republican	Elected in 1802. Re-elected in 1804. Re-elected in 1806. Re-elected in 1808. Re-elected in 1810. Redistricted to the 9th district.
9th	March 4, 1805 – July 23, 1805
	July 23, 1805 – December 2, 1805		Vacant
	December 2, 1805 – March 3, 1807		Robert Whitehill	Democratic-Republican	Elected October 8, 1805 to finish Hanna's term and seated December 2, 1805. Re-elected in 1806. Re-elected in 1808. Re-elected in 1810. Redistricted to the 5th district.
10th	March 4, 1807 March 3, 1809
11th	March 4, 1809 March 3, 1811
12th	March 4, 1811 March 3, 1813
13th	March 4, 1813 – March 3, 1815		Hugh Glasgow	Democratic-Republican	Elected in 1812. Re-elected in 1814. Retired.		No second seat from 1813 to 1823
14th	March 4, 1815 – March 3, 1817
15th	March 4, 1817 – April 20, 1818		Jacob Spangler	Democratic-Republican	Elected in 1816. Resigned to become Surveyor-General of Pennsylvania.
	April 20, 1818 – November 16, 1818		Vacant
	November 16, 1818 – March 3, 1819		Jacob Hostetter	Democratic-Republican	Elected in 1818 to finish Spangler's term and seated November 16, 1818. Also elected in 1818 to the next term. Lost re-election.
16th	March 4, 1819 – March 3, 1821
17th	March 4, 1821 – March 3, 1823		James S. Mitchell	Democratic-Republican	Elected in 1820. Redistricted to the 10th district.
18th	March 4, 1823 – March 3, 1825		James Buchanan	Jackson Federalist	Redistricted from the 3rd district and re-elected in 1822. Re-elected in 1824. Re-elected in 1826. Re-elected in 1828. Retired.		Samuel Edwards	Jackson Federalist	Redistricted from the 1st district and re-elected in 1822. Re-elected in 1824. Retired.		Isaac Wayne	Jackson Federalist	[data unknown/missing]
19th	March 4, 1825 – March 3, 1827			Jacksonian				Jacksonian			Charles Miner	Anti-Jacksonian	Elected in 1824. Re-elected in 1826. Retired.
20th	March 4, 1827 – March 3, 1829						Samuel Anderson	Anti-Jacksonian	Elected in 1826. Returned to Pennsylvania House of Representatives.
21st	March 4, 1829 – March 3, 1831						George G. Leiper	Jacksonian	Elected in 1828. Retired.		Joshua Evans Jr.	Jacksonian	Elected in 1828. Re-elected in 1830. Retired.
22nd	March 4, 1831 – March 3, 1833		William Hiester	Anti-Masonic	Elected in 1830. Re-elected in 1832. Re-elected in 1834. Retired.		David Potts Jr.	Anti-Masonic	Elected in 1830. Re-elected in 1832. Re-elected in 1834. Re-elected in 1836. Retired.
23rd	March 4, 1833 – March 3, 1835										Edward Darlington	Anti-Masonic	Elected in 1832. Re-elected in 1834. Re-elected in 1836. Retired.
24th	March 4, 1835 – March 3, 1837
25th	March 4, 1837 – March 3, 1839		Edward Davies	Anti-Masonic	Elected in 1836. Re-elected in 1838. [data unknown/missing]
26th	March 4, 1839 – March 3, 1841						Francis James	Anti-Masonic	Elected in 1838. Re-elected in 1840. [data unknown/missing]		John Edwards	Anti-Masonic	Elected in 1838. Re-elected in 1840. [data unknown/missing]
27th	March 4, 1841 – March 3, 1843		Jeremiah Brown	Whig	Elected in 1840. Redistricted to the 8th district.			Whig				Whig

1843–present: One seat

Member	Party	Years	Cong ress	Electoral history
Charles J. Ingersoll	Democratic	March 4, 1843 – March 3, 1849	28th 29th 30th	Redistricted from the 3rd district and re-elected in 1843. Re-elected in 1844. Re-elected in 1846. Retired.
John Robbins	Democratic	March 4, 1849 – March 3, 1853	31st 32nd	Elected in 1848. Re-elected in 1850. Redistricted to the 3rd district.
William H. Witte	Democratic	March 4, 1853 – March 3, 1855	33rd	Elected in 1852. Retired.
Jacob Broom	American	March 4, 1855 – March 3, 1857	34th	Elected in 1854. Lost renomination.
Henry M. Phillips	Democratic	March 4, 1857 – March 3, 1859	35th	Elected in 1856. Lost re-election.
William Millward	Republican	March 4, 1859 – March 3, 1861	36th	Elected in 1858. Lost renomination.
William D. Kelley	Republican	March 4, 1861 – January 9, 1890	37th 38th 39th 40th 41st 42nd 43rd 44th 45th 46th 47th 48th 49th 50th 51st	Elected in 1860. Re-elected in 1862. Re-elected in 1864. Re-elected in 1866. Re-elected in 1868. Re-elected in 1870. Re-elected in 1872. Re-elected in 1874. Re-elected in 1876. Re-elected in 1878. Re-elected in 1880. re-elected in 1882. Re-elected in 1884. re-elected in 1886. re-elected in 1888. Died.
Vacant		January 9, 1890 – February 18, 1890	51st
John E. Reyburn	Republican	February 18, 1890 – March 3, 1897	51st 52nd 53rd 54th	Elected in 1890. to finish Kelley's term. Re-elected in 1890. Re-elected in 1892. Re-elected in 1894. Lost renomination.
James R. Young	Republican	March 4, 1897 – March 3, 1903	55th 56th 57th	Elected in 1896. Re-elected in 1898. Re-elected in 1900. [data unknown/missing]
Robert H. Foerderer	Republican	March 4, 1903 – July 26, 1903	58th	Redistricted from the at-large district and re-elected in 1902. Died.
Vacant		July 26, 1903 – November 3, 1903
Reuben O. Moon	Republican	November 3, 1903 – March 3, 1913	58th 59th 60th 61st 62nd	Elected to complete Foerderer's term. Re-elected in 1904. Re-elected in 1906. Re-elected in 1908. Re-elected in 1910. Lost renomination.
George W. Edmonds	Republican	March 4, 1913 – March 3, 1925	63rd 64th 65th 66th 67th 68th	Elected in 1912. Re-elected in 1914. Re-elected in 1916. Re-elected in 1918. Re-elected in 1920. Re-elected in 1922. Lost renomination.
Benjamin M. Golder	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. Lost re-election.
George W. Edmonds	Republican	March 4, 1933 – January 3, 1935	73rd	Elected in 1932. Lost re-election.
J. Burrwood Daly	Democratic	January 3, 1935 – March 12, 1939	74th 75th 76th	Elected in 1934. Re-elected in 1936. Re-elected in 1938. Died.
Vacant		March 12, 1939 – November 7, 1939	76th
John E. Sheridan	Democratic	November 7, 1939 – January 3, 1947	76th 77th 78th 79th	Elected to complete Daly's term. Re-elected in 1940. Re-elected in 1942. Elected in 1944. Retired.
Franklin J. Maloney	Republican	January 3, 1947 – January 3, 1949	80th	Elected in 1946. Lost re-election.
Earl Chudoff	Democratic	January 3, 1949 – January 5, 1958	81st 82nd 83rd 84th 85th	Elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-lected in 1956. Resigned to become judge of the Philadelphia Court of Common Pleas.
Vacant		January 5, 1958 – May 20, 1958	85th
Robert N. C. Nix Sr.	Democratic	May 20, 1958 – January 3, 1963	85th 86th 87th	Elected to complete Chudoff's term. Re-elected in 1958. Re-elected in 1960. Redistricted to the 2nd district.
Herman Toll	Democratic	January 3, 1963 – January 3, 1967	88th 89th	Redistricted from the 6th district and re-elected in 1962. Elected in 1964. Retired.
Joshua Eilberg	Democratic	January 3, 1967 – January 3, 1979	90th 91st 92nd 93rd 94th 95th	Elected in 1966. Elected in 1968. Elected in 1970. Elected in 1972. Elected in 1974. Elected in 1976. Lost renomination.
Charles F. Dougherty	Republican	January 3, 1979 – January 3, 1983	96th 97th	Elected in 1978. Re-elected in 1980. Redistricted to the 3rd district and lost re-election.
Joseph P. Kolter	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. Lost renomination.
Ron Klink	Democratic	January 3, 1993 – January 3, 2001	103rd 104th 105th 106th	Elected in 1992. Elected in 1994. Re-elected in 1996. Elected in 1998. Retired to run for U.S. Senator.
Melissa Hart	Republican	January 3, 2001 – January 3, 2007	107th 108th 109th	Elected in 2000. Re-elected in 2002. Re-elected in 2004. Lost re-election.
Jason Altmire	Democratic	January 3, 2007 – January 3, 2013	110th 111th 112th	Elected in 2006. Re-elected in 2008. Re-elected in 2010. Redistricted to the 12th district and lost renomination there.
Scott Perry	Republican	January 3, 2013 – January 3, 2019	113th 114th 115th	Elected in 2012. Re-elected in 2014. Re-elected in 2016. Redistricted to the 10th district.
Madeleine Dean	Democratic	January 3, 2019 – present	116th 117th	Elected in 2018. Re-elected in 2020.

In the very early 19th Century this district included all or part of Bucks County.

• 
  2003–2013
• 
  2013–2019

• List of United States congressional districts
• Pennsylvania's congressional districts

• 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

• District map
• Congressional redistricting in Pennsylvania