Pennsylvania sent 11 Democrats and 12 Republicans to the US House in 1990.

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

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Pennsylvania — 1990 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	+58.9%	Thomas M Foglietta	92,441
PA-02	D	+84.2%	William H Gray III	102,702
PA-03	D	+20.0%	Robert A Borski	149,809
PA-04	D	+11.8%	Joe Kolter	132,583
PA-05	R	−18.6%	Richard T Schulze	131,489
PA-06	D	+14.0%	Gus Yatron	130,487
PA-07	R	−30.6%	Curt Weldon	162,160
PA-08	D	+13.3%	Peter H Kostmayer	150,115
PA-09	R	−100.0%	Bud Shuster	106,632
PA-10	R	−100.0%	Joseph M McDade	113,490
PA-11	D	+100.0%	Paul E Kanjorski	88,219
PA-12	D	+23.5%	John P Murtha	130,693
PA-13	R	−20.6%	Lawrence Coughlin	148,544
PA-14	D	+43.6%	William J Coyne	108,133
PA-15	R	−21.1%	Don Ritter	127,411
PA-16	R	−32.3%	Robert S Walker	129,445
PA-17	R	−100.0%	George W Gekas	110,317
PA-18	R	−2.9%	Rick Santorum	166,577
PA-19	R	−100.0%	William F Goodling	96,336
PA-20	D	+31.2%	Joseph M Gaydos	125,134
PA-21	R	−100.0%	Thomas J Ridge	92,732
PA-22	D	+26.5%	Austin J Murphy	123,884
PA-23	R	−18.8%	William F Clinger JR	131,654