Pennsylvania sent 12 Democrats and 11 Republicans to the US House in 1986.

23 districts. Each row shows the winning party, margin, and member elected. Vote counts are the certified district totals.

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Pennsylvania — 1986 House districts

Source: MIT Election Data + Science Lab, US House returns (party-classified by literal ballot party).

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District	Won	Margin	Member elected	Votes
PA-01	D	+49.5%	Thomas M Foglietta	118,035
PA-02	D	+98.4%	William H Gray	130,495
PA-03	D	+23.6%	Robert A Borski	174,497
PA-04	D	+21.7%	Joseph P Kolter	142,594
PA-05	R	−31.5%	Richard T Schulze	133,241
PA-06	D	+38.2%	Gus Yatron	142,000
PA-07	R	−22.6%	Curt Weldon	179,675
PA-08	D	+10.1%	Peter H Kostmayer	155,778
PA-09	R	−100.0%	Bud Shuster	120,890
PA-10	R	−49.3%	Joseph Michael McDade	158,851
PA-11	D	+41.2%	Paul E Kanjorski	159,190
PA-12	D	+34.8%	John P Murtha	144,072
PA-13	R	−17.0%	Lawrence Coughlin	172,082
PA-14	D	+89.6%	William J Coyne	116,859
PA-15	R	−13.5%	Don Ritter	131,801
PA-16	R	−49.1%	Robert S Walker	135,183
PA-17	R	−47.3%	George W Gekas	137,184
PA-18	D	+26.0%	Doug Walgren	165,328
PA-19	R	−45.8%	Bill Goodling	137,278
PA-20	D	+98.5%	Joseph M Gaydos	138,752
PA-21	R	−61.7%	Tom Ridge	137,472
PA-22	D	+100.0%	Austin J Murphy	131,650
PA-23	R	−11.0%	Bill Clinger	143,470