The 57th Pennsylvania House of Representatives District is located in southwest Pennsylvania and has been represented by Eric Nelson since 2016.

Pennsylvania's 57th State House of Representatives district
Representative	Eric Nelson R–Hempfield Township, Westmoreland County
Population (2022)	66,577

The 57th District is located in Westmoreland County and includes the following areas:^[1]

PA House election, 2012:
Pennsylvania House, District 57

Party		Candidate	Votes	%	±%
	Republican	Tim Krieger	17,339	64.42
	Democratic	AJ Gales	9,576	35.58
Margin of victory			7,763	28.8
Turnout			26,915	100

PA House election, 2014:
Pennsylvania House, District 57

Party		Candidate	Votes	%	±%
	Republican	Tim Krieger	12,734	69.19
	Democratic	Donna J. McClelland	5,671	30.81
Margin of victory			7,063	38.4
Turnout			18,405	100
	Republican hold

PA House election, 2016:
Pennsylvania House, District 57

Party		Candidate	Votes	%	±%
	Republican	Eric Nelson	20,396	65.15	−4.04%
	Democratic	Linda L. Iezzi	10,909	34.85	+4.04%
Margin of victory			9,487	30.3
Turnout			31,305	100
	Republican hold

PA House election, 2018:
Pennsylvania House, District 57

Party		Candidate	Votes	%	±%
	Republican	Eric Nelson	16,043	62.83	−2.32%
	Democratic	Collin Warren	9,491	37.17	+2.32%
Margin of victory			6,912	25.66
Turnout			25,534	100
	Republican hold

PA House election, 2020:
Pennsylvania House, District 57

Party		Candidate	Votes	%	±%
	Republican	Eric Nelson	28,797	100	+37.17%
Margin of victory			28,797	100
Turnout			28,797	100
	Republican hold

• Cox, Harold (2004). "Legislatures - 1776-2004". Wilkes University Election Statistics Project. Wilkes University.

• District map from the United States Census Bureau
• Pennsylvania House Legislative District Maps from the Pennsylvania Redistricting Commission.
• Population Data for District 57 from the Pennsylvania Redistricting Commission.