|Pennsylvania's 1st congressional district|
Boundaries since the 2018 elections.
The state congressional district map was redrawn by the Supreme Court of Pennsylvania in February 2018 after ruling the previous map unconstitutional due to partisan gerrymandering; the previous 1st district was geographically succeeded by the newly redrawn 2nd district which on November 6, 2018 elected Brendan Boyle, the incumbent from the 13th district. The new first district is similar to the previous eighth district, with the new boundaries going into effect for the 2018 elections and representation thereafter. Brian Fitzpatrick, the incumbent from the previous 8th district, was elected on November 6, 2018 to the newly redrawn 1st district.
List of members representing the district
The district was organized from Pennsylvania's at-large congressional district in 1791.
1791–1793: One seat
|Pro-Administration||March 4, 1791 –
March 3, 1793
|2nd||Redistricted from the at-large district and re-elected in 1791.|
Redistricted to the at-large district.
1795–1803: One seat
The district was organized from Pennsylvania's At-large congressional district in 1795.
|John Swanwick||Democratic-Republican||March 4, 1795 –
August 1, 1798
|Elected in 1794.|
Re-elected in 1796.
|Vacant||August 1, 1798 –
December 3, 1798
|Robert Waln||Democratic-Republican||December 3, 1798 –
March 3, 1801
|Elected October 9, 1798 to finish Swanwick's term and seated December 3, 1798.|
Elected the same day to the next term.
|Federalist||March 4, 1801 –
March 3, 1803
|7th||Elected in 1800.|
1803–1823: Three seats, then four
1823–present: One seat
The district was reorganized in 1823 to have one seat.
- "New Pennsylvania Map Is a Major Boost for Democrats". The Cook Political Report. February 20, 2017. Retrieved February 21, 2017.
- Cohn, Nate; Bloch, Matthew; Quealy, Kevin (February 19, 2018). "The New Pennsylvania House Districts Are In. We Review the Mapmakers' Choices". The Upshot. The New York Times. Retrieved February 20, 2018.
- 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