South Cotabato's 1st congressional district

South Cotabato's 1st congressional district
South Cotabato's 1st congressional district
Constituency; for the House of Representatives of the Philippines
	Map
	Location of South Cotabato within the Philippines
Province	South Cotabato
Region	Soccsksargen
Population	297,574 (2024)
Electorate	195,438 (2025)
Major settlements	3 LGUs Municipalities ; Polomolok ; Tampakan ; Tupi ;
Area	957.97 km2 (369.87 sq mi)
Current constituency
Created	1987
Representative	Isidro D. Lumayag
Political party	PFP
Congressional bloc	Majority

South Cotabato's 1st congressional district is one of the two congressional districts of the Philippines in the province of South Cotabato. It has been represented in the House of Representatives since 1987.^[3] The district covers its southern municipalities of Polomolok, Tampakan and Tupi, and, until 2022, the independent city of General Santos.^[4]^[5]^[6] It is currently represented in the 20th Congress by Isidro Lumayag of the Partido Federal ng Pilipinas.^[7]

Quick facts Province, Region ...

#	Image	Member	Term of office		Congress	Party	Electoral history	Constituent LGUs
#	Image	Member	Start	End	Congress	Party	Electoral history	Constituent LGUs
South Cotabato's 1st district for the House of Representatives of the Philippines
District created February 2, 1987 from South Cotabato's at-large district.^[4]
1		Adelbert W. Antonino	June 30, 1987	June 30, 1992	8th	LDP	Elected in 1987.	1987–2022 General Santos, Polomolok, Tampakan, Tupi
2		Luwalhati Antonino	June 30, 1992	June 30, 2001	9th	Lakas	Elected in 1992.
					10th	Lakas	Re-elected in 1995.
					11th	LAMMP	Re-elected in 1998.
3		Darlene Antonino Custodio	June 30, 2001	June 30, 2010	12th	NPC	Elected in 2001.
					13th		Re-elected in 2004.
					14th		Re-elected in 2007.
4		Pedro B. Acharon Jr.	June 30, 2010	June 30, 2019	15th	NPC	Elected in 2010.
					16th	Liberal (AIM)	Re-elected in 2013.
					17th	NPC	Re-elected in 2016.
Vacant			June 30, 2019	November 4, 2019	18th		Election delayed to late 2019.
5		Shirlyn Bañas Nograles	November 4, 2019	June 30, 2022	18th	PDP–Laban	Delayed election declared as unconstitutional. Elected in 2019.
6		Isidro D. Lumayag	June 30, 2022	Incumbent	19th	PFP	Elected in 2022.	2022–present Polomolok, Tampakan, Tupi

Party		Candidate	Votes	%
	PFP	Isidro Lumayag	80,501	58.95
	PDP–Laban	Danny Nograles	56,053	41.05
Total votes			136,554	100.00

Party		Candidate	Votes	%
	NPC	Pedro Acharon	138,079	51.43
	UNA	Rogelio Pacquiao	130,377	48.57
Total votes			268,456	100.00
	NPC hold

Party		Candidate	Votes	%
	NPC	Pedro Acharon Jr.	163,590	63.24
	Independent	Ramon Melliza	51,306	19.83
	Liberal	Rogelio Garcia	14,053	5.43
	Independent	Franklin Gacal, Jr.	6,327	2.45
	Independent	Aldwin Angangan	985	0.38
	Independent	Abelardo Plaza	731	0.28
Valid ballots			236,992	91.61
Invalid or blank votes			21,694	8.39
Total votes			258,686	100.00
	NPC hold

Party		Candidate	Votes	%
	NPC	Darlene Antonino-Custodio	139,061	64.49
	Liberal	Manny Pacquiao	75,908	35.51
Valid ballots			214,969	100.00
	NPC hold

Representation history