Pennsylvania's 12th Congressional District
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Pennsylvania's 12th Congressional District
Pennsylvania's 12th congressional district
Pennsylvania Congressional District 12.png
Boundaries since January 2019
Cook PVIR+17[1]

Pennsylvania's 12th congressional district is located in the north central and northeastern parts of Pennsylvania, including the Northern Tier region, parts of the Susquehanna Valley, and part of Happy Valley including State College. It has been represented by Fred Keller since May 21, 2019, who won a special election to fill the vacancy caused by the resignation of former representative Tom Marino.[2][3]

Prior to 2018, the 12th district was located in southwestern Pennsylvania, and included all of Beaver County, and parts of Allegheny, Cambria, Lawrence, Somerset, and Westmoreland Counties. The Supreme Court of Pennsylvania redrew this and other state congressional districts in February 2018 after ruling the previous map unconstitutional due to partisan gerrymandering. The new 12th district covers much of the old 10th district. The old 12th district was redrawn to an area north and west of Pittsburgh and renamed the 17th district, for the 2018 elections and representation thereafter.[4]

Before the 2011 round of redistricting, the 12th District was widely considered to be gerrymandered by the Republican-controlled state legislature as a heavily Democratic district. It consisted of all of Greene County, and parts of Allegheny, Armstrong, Cambria, Fayette, Indiana, Somerset, Washington, and Westmoreland Counties.

Geography 2003-2013

Located in southwestern Pennsylvania, the 12th District consisted of all of Greene County, and parts of Allegheny, Armstrong, Cambria, Fayette, Indiana, Somerset, Washington, and Westmoreland Counties. A thoroughly unionized district, the 12th was historically among the most Democratic areas of the state. However, the Democrats in this area were not as liberal as their counterparts in Philadelphia and Pittsburgh. Most were somewhat conservative on social issues, particularly abortion and gun control.

The 12th included all of Greene County, a highly rural region that still has a traditionally Democratic influence due to its labor leanings. In Washington county, the city of Washington, a large and Democratic edge suburb of Pittsburgh was a part of the 12th, as well as the eastern portion of the county. Most of the Monongahela Valley region, a very Democratic area that was once an important steel-making area, was also part of the 12th. However, more rural western Washington County and the suburban northern portion of the county (with towns like McDonald and Canonsburg) then belonged to the 18th. The western portion of Fayette County, including the city of Uniontown, a labor Democratic stronghold was part of this district, while the rural mountainous eastern portion was a part of the 9th.

The 12th District continued eastward, including southeastern and northeastern parts of Westmoreland County, including the labor Democratic city of Latrobe, while leaving the suburban western part of the county (with towns such as Murrysville) and the generally left-leaning city of Greensburg in the 18th. The major population base of the district was located just to the east, taking in most of Somerset and Cambria counties. This area, the heart of a large coal-mining region, includes the district's largest city, Johnstown. The 12th also contained a part of Indiana County, mainly the college town of Indiana.

The 12th completed its wrap around the metro Pittsburgh region by ending in the northeastern corner of the city's suburbs, containing middle class regions such as Lower Burrell and the working class suburb of New Kensington. A portion of Armstrong County was also included in the district, including several industrial suburbs such as Freeport and Apollo.


[Data unknown/missing.]


After the 2000 census, the Republican-controlled state legislature radically altered the 12th in an effort to get more Republicans elected from traditionally heavily Democratic southwestern Pennsylvania. A large chunk of the old 20th District was incorporated into the 12th. In some parts of the western portion of the district, one side of the street is in the 12th while the other side of the street is in the 18th District (the reconfigured 20th). This led to criticism that the 12th was a gerrymander intended to pack as many of southwestern Pennsylvania's heavily Democratic areas as possible into just two districts--the 12th and the Pittsburgh-based 14th.

Prior to the 2012 redistricting, the district has a Cook Partisan Voting Index score of R+1. The district is notable as the only congressional district in the nation that voted for Democratic presidential candidate John Kerry in 2004 but went for Republican John McCain in 2008. This is mainly due to the fact that since 2000 Southwestern Pennsylvania has gradually become more Republican leaning.

2006 election

In the 2006 election, Murtha was re-elected with 61% of the vote. His Republican opponent, Washington County Commissioner Diana Irey, received 39%.

2008 election

John Murtha won the 2008 election with 58% of the vote. Murtha was a United States Marine and the first Vietnam War veteran to serve in Congress. He defeated Lt. Col. William T. Russell, an army veteran.

2010 special election

Pennsylvania governor Ed Rendell scheduled a special election for May 18, 2010, following the death of Representative John Murtha. On March 8, 2010, the Pennsylvania Democratic Party's Executive Committee nominated Mark Critz, Murtha's former district director.[5] On March 11, a convention of Republicans from the 12th district nominated businessman Tim Burns.[6] The Libertarian Party's candidate was Demo Agoris, who ran for the Pennsylvania House of Representatives in the 48th district as a Libertarian in 2006.

Mark Critz won the election.

2010 election

Mark Critz was re-elected in the regularly scheduled 2010 election; again beating Republican Tim Burns (this time with 51% of the vote against 49%).

2012 election

Mark Critz ran for re-election to a second full term in the 2012 election, but was defeated by Republican challenger Keith Rothfus. Critz garnered 48.5% of the vote to Rothfus' 51.5%.[7] The 12th had absorbed a large chunk of the old 4th District, including Rothfus' home, after the 2010 census, and was significantly more Republican than its predecessor.

2019 special election

After Tom Marino's resignation in January 2019, an election was held on May 21st to fill the open seat. Republican Fred Keller defeated 2018 Democratic nominee Mark Friedenberg. [8][9]

List of members representing the district

Representative Party Years Electoral history Location
District created in 1795.
Albert Gallatin
Democratic-Republican March 4, 1795 -
May , 1801
Elected in 1794.
Re-elected in 1796.
Re-elected in 1798.
Re-elected in 1800 but declined the seat to become U.S. Secretary of the Treasury.
[Data unknown/missing.]
Vacant May , 1801 -
December 7, 1801
William Hoge Democratic-Republican December 7, 1801 -
March 3, 1803
Elected October 13, 1801 to finish Gallatin's term and seated December 7, 1801.
Redistricted to the 10th district.
District eliminated March 4, 1803.
District restored March 4, 1813.
Aaron Lyle Democratic-Republican March 4, 1813 -
March 3, 1817
Redistricted from the 10th district and re-elected in 1812.
Re-elected in 1814.
[Data unknown/missing.]
Thomas Patterson Democratic-Republican March 4, 1817 -
March 3, 1823
Elected in 1816.
Re-elected in 1818.
Re-elected in 1820.
Redistricted to the 15th district.
John Brown Jackson Democratic-Republican March 4, 1823 -
March 3, 1825
Redistricted from the 9th district and re-elected in 1822.
Lost re-election.
[Data unknown/missing.]
John Mitchell Jacksonian March 4, 1825 -
March 3, 1829
Elected in 1824.
Re-elected in 1826.
John scott.jpg
John Scott
Jacksonian March 4, 1829 -
March 3, 1831
Elected in 1828.
Lost re-election.
Robert Allison Anti-Masonic March 4, 1831 -
March 3, 1833
Elected in 1830.
George Chambers Anti-Masonic March 4, 1833 -
March 3, 1837
Elected in 1832.
[Data unknown/missing.]
[Data unknown/missing.]
Daniel Sheffer Democratic March 4, 1837 -
March 3, 1839
[Data unknown/missing.]
Lost re-election.
James Cooper
Whig March 4, 1839 -
March 3, 1843
[Data unknown/missing.]
Almon H. Read Democratic March 4, 1843 -
June 3, 1844
Redistricted from the 17th district.
[Data unknown/missing.]
Vacant June 3, 1844 -
December 2, 1844
George Fuller Democratic December 2, 1844 -
March 3, 1845
[Data unknown/missing.]
David Wilmot.png
David Wilmot
Democratic March 4, 1845 -
March 3, 1851
[Data unknown/missing.]
Galusha A. Grow
Democratic March 4, 1851 -
March 3, 1853
[Data unknown/missing.]
Redistricted to the 14th district.
Hendrick B. Wright
Democratic March 4, 1853 -
March 3, 1855
[Data unknown/missing.]
Lost re-election.
[Data unknown/missing.]
Henry M. Fuller Opposition March 4, 1855 -
March 3, 1857
[Data unknown/missing.]
John G. Montgomery Democratic March 4, 1857 -
April 24, 1857
[Data unknown/missing.]
Vacant April 24, 1857 -
December 7, 1857
Paul Leidy
Democratic December 7, 1857 -
March 3, 1859
[Data unknown/missing.]
George W. Scranton (Pennsylvania Congressman).jpg
George W. Scranton
Republican March 4, 1859 -
March 24, 1861
[Data unknown/missing.]
Vacant March 24, 1861 -
July 4, 1861
Hendrick B. Wright
Democratic July 4, 1861 -
March 3, 1863
[Data unknown/missing.]
Charles Denison Democratic March 4, 1863 -
June 27, 1867
[Data unknown/missing.]
[Data unknown/missing.]
Vacant June 27, 1867 -
November 21, 1867
George Washington Woodward - Brady-Handy.jpg
George W. Woodward
Democratic November 21, 1867 -
March 3, 1871
[Data unknown/missing.]
Lazarus D. Shoemaker (Pennsylvania Congressman).jpg
Lazarus D. Shoemaker
Republican March 4, 1871 -
March 3, 1875
[Data unknown/missing.]
[Data unknown/missing.]
Winthrop Welles Ketchum - Brady-Handy adjusted.jpg
Winthrop W. Ketcham
Republican March 4, 1875 -
July 19, 1876
[Data unknown/missing.]
Resigned to become U.S. District Judge
Vacant July 19, 1876 -
November 7, 1876
William Henry Stanton 2.jpg
William H. Stanton
Democratic November 7, 1876 -
March 3, 1877
[Data unknown/missing.]
Hendrick B. Wright
Democratic March 4, 1877 -
March 3, 1879
[Data unknown/missing.]
Lost re-election.
Greenback March 4, 1879 -
March 3, 1881
Joseph A. Scranton (Pennsylvania Congressman).jpg
Joseph A. Scranton
Republican March 4, 1881 -
March 3, 1883
[Data unknown/missing.]
Lost re-election.
Daniel W. Connolly (Pennsylvania Congressman).jpg
Daniel W. Connolly
Democratic March 4, 1883 -
March 3, 1885
[Data unknown/missing.]
Lost re-election.
[Data unknown/missing.]
Joseph A. Scranton (Pennsylvania Congressman).jpg
Joseph A. Scranton
Republican March 4, 1885 -
March 3, 1887
[Data unknown/missing.]
Lost re-election.
John Lynch (1843-1910), Pennsylvania Congressman.jpg
John Lynch
Democratic March 4, 1887 -
March 3, 1889
[Data unknown/missing.]
Lost re-election.
Edwin S. Osborne (Pennsylvania Congressman).jpg
Edwin S. Osborne
Republican March 4, 1889 -
March 3, 1891
Redistricted from the At-large District
George W. Shonk (Pennsylvania Congressman).jpg
George W. Shonk
Republican March 4, 1891 -
March 3, 1893
Declined to be a candidate for renomination
William H. Hines (Pennsylvania Congressman).jpg
William H. Hines
Democratic March 4, 1893 -
March 3, 1895
[Data unknown/missing.]
Lost re-election.
[Data unknown/missing.]
John Leisenring (Pennsylvania Congressman).jpg
John Leisenring
Republican March 4, 1895 -
March 3, 1897
Declined to be a candidate for re-election
Morgan B. Williams (Pennsylvania Congressman).jpg
Morgan B. Williams
Republican March 4, 1897 -
March 3, 1899
[Data unknown/missing.]
Lost re-election.
Stanley W. Davenport (cropped).jpg
Stanley W. Davenport
Democratic March 4, 1899 -
March 3, 1901
[Data unknown/missing.]
Lost renomination.
Henry W. Palmer.jpg
Henry W. Palmer
Republican March 4, 1901 -
March 3, 1903
[Data unknown/missing.]
Redistricted to the 11th district.
George R. Patterson (Pennsylvania Congressman).jpg
George R. Patterson
Republican March 4, 1903 -
March 21, 1906
[Data unknown/missing.]
[Data unknown/missing.]
Vacant January 21, 1906 -
November 6, 1906
Charles N. Brumm, Pennsylvania Congressman.jpg
Charles N. Brumm
Republican November 6, 1906 -
January 4, 1909
[Data unknown/missing.]
Resigned when he was elected judge of the court of common pleas of Schuylkill County, Pennsylvania
Vacant January 4, 1909 -
March 3, 1909
Alfred B. Garner (Pennsylvania Congressman).jpg
Alfred B. Garner
Republican March 4, 1909 -
March 3, 1911
Unsuccessful candidate for renomination in 1910
Robert E. Lee Democratic March 4, 1911 -
March 3, 1915
[Data unknown/missing.]
Lost re-election.
[Data unknown/missing.]
Robert D. Heaton (Pennsylvania Congressman).jpg
Robert D. Heaton
Republican March 4, 1915 -
March 3, 1919
[Data unknown/missing.]
John Reber
Republican March 4, 1919 -
March 3, 1923
[Data unknown/missing.]
John J. Casey
Democratic March 4, 1923 -
March 3, 1925
[Data unknown/missing.]
Lost re-election.
Edmund N. Carpenter (Pennsylvania Congressman).jpg
Edmund N. Carpenter
Republican March 4, 1925 -
March 3, 1927
[Data unknown/missing.]
Lost re-election.
John J. Casey
Democratic March 4, 1927 -
May 5, 1929
[Data unknown/missing.]
Vacant May 5, 1929 -
June 4, 1929
C. Murray Turpin Republican June 4, 1929 -
January 3, 1937
[Data unknown/missing.]
Lost re-election.
[Data unknown/missing.]
J. Harold Flannery Democratic January 3, 1937 -
January 3, 1942
[Data unknown/missing.]
Resigned to become judge of the common pleas court of Luzerne County, Pennsylvania
Vacant January 3, 1942 -
May 19, 1942
Thomas B. Miller Republican May 19, 1942 -
January 3, 1945
[Data unknown/missing.]
Lost re-election.
[Data unknown/missing.]
Ivor D. Fenton
Republican January 3, 1945 -
January 3, 1963
Redistricted from the 13th district.
Lost re-election.
[Data unknown/missing.]
J. Irving Whalley.jpg
J. Irving Whalley
Republican January 3, 1963 -
January 3, 1973
Redistricted from the 18th district.
[Data unknown/missing.]
John P. Saylor 89th Congress 1965.jpg
John P. Saylor
Republican January 3, 1973 -
October 28, 1973
Redistricted from the 22nd district.
[Data unknown/missing.]
Vacant October 28, 1973 -
February 5, 1974
John Murtha portrait 2008.jpg
John Murtha
Democratic February 5, 1974 -
February 8, 2010
[Data unknown/missing.]
[Data unknown/missing.]
[Data unknown/missing.]
Pa12 109.gif
Vacant February 8, 2010 -
May 18, 2010
Mark Critz
Democratic May 18, 2010 -
January 3, 2013
Elected to finish Murtha's term
Re-elected in 2010.
Lost re-election.
Keith Rothfus.png
Keith Rothfus
Republican January 3, 2013 -
January 3, 2019
Elected in 2012.
Re-elected in 2014.
Re-elected in 2016.
Redistricted to the 17th district and lost re-election.
Pennsylvania US Congressional District 12 (since 2013).tif
Tom Marino Official Portrait, 112th Congress (cropped 2).jpg
Tom Marino
Republican January 3, 2019 -
January 23, 2019
Redistricted from the 10th district and re-elected in 2018.
Pennsylvania Congressional District 12.png
Vacant January 23, 2019 -
May 21, 2019
Fred Keller, official portrait, 116th Congress (cropped2).jpg
Fred Keller
Republican May 21, 2019 -
Elected to finish Marino's term.

See also


  1. ^ "New Pennsylvania Map Is a Major Boost for Democrats". The Cook Political Report. February 20, 2018. Retrieved 2018.
  2. ^ "Congressman Tom Marino resigns, leaving vacancy in Pa.'s 12th district". Centre Daily Times. January 17, 2019. Retrieved 2019.
  3. ^ "Keller to take the oath of office on June 3". Daily Item. May 24, 2019. Retrieved 2019.
  4. ^ 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 2018.
  5. ^ Becker, Bernie (March 8, 2010). "Dems Choose Nominee for Murtha Seat". The New York Times. Retrieved 2010.
  6. ^ Faher, Mike (March 12, 2010). "GOP chooses Burns for special election in 12th". The Tribune-Democratic. Retrieved 2010.
  7. ^ "2012 General Election: Representative in Congress, District 12". Pennsylvania Department of State. Archived from the original on 16 November 2012. Retrieved 2012.
  8. ^ Levy, Marc (March 2, 2019). "GOP state lawmaker becomes favorite in House race to succeed Marino". Center Daily Times. Associated Press. Retrieved 2019.
  9. ^ "Pennsylvania Democratic Party Announces Candidate For Special Election In The 12th Congressional District - Pennsylvania Democratic PartyPennsylvania Democratic Party". February 12, 2019. Retrieved 2019.
  10. ^ "Ex-Congressman Marino Now Cites Health for Resigning". US News & World Report. Associated Press. February 12, 2019. Retrieved 2019.

External links

Coordinates: 40°25?42?N 79°29?11?W / 40.42833°N 79.48639°W / 40.42833; -79.48639

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