# South Cotabato's 1st congressional district

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. The district covers its southern municipalities of Polomolok, Tampakan and Tupi, and, until 2022, the independent city of General Santos. It is currently represented in the 19th Congress by Isidro Lumayag of the Partido Federal ng Pilipinas.

## Representation history

| # | Image | Image | Member | Term of office | Term of office | Congress | Party | Electoral history | Constituent LGUs |
| # | Image | 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. ||||||||||
| 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. | 1987–2022 General Santos, Polomolok, Tampakan, Tupi |
| 2 | | | Luwalhati Antonino | June 30, 1992 | June 30, 2001 | 10th | Lakas | Re-elected in 1995. | 1987–2022 General Santos, Polomolok, Tampakan, Tupi |
| 2 | | | Luwalhati Antonino | June 30, 1992 | June 30, 2001 | 11th | LAMMP | Re-elected in 1998. | 1987–2022 General Santos, Polomolok, Tampakan, Tupi |
| 3 | | | Darlene Antonino Custodio | June 30, 2001 | June 30, 2010 | 12th | NPC | Elected in 2001. | 1987–2022 General Santos, Polomolok, Tampakan, Tupi |
| 3 | | | Darlene Antonino Custodio | June 30, 2001 | June 30, 2010 | 13th | NPC | Re-elected in 2004. | 1987–2022 General Santos, Polomolok, Tampakan, Tupi |
| 3 | | | Darlene Antonino Custodio | June 30, 2001 | June 30, 2010 | 14th | NPC | Re-elected in 2007. | 1987–2022 General Santos, Polomolok, Tampakan, Tupi |
| 4 | | | Pedro B. Acharon Jr. | June 30, 2010 | June 30, 2019 | 15th | NPC | Elected in 2010. | 1987–2022 General Santos, Polomolok, Tampakan, Tupi |
| 4 | | | Pedro B. Acharon Jr. | June 30, 2010 | June 30, 2019 | 16th | Liberal (AIM) | Re-elected in 2013. | 1987–2022 General Santos, Polomolok, Tampakan, Tupi |
| 4 | | | Pedro B. Acharon Jr. | June 30, 2010 | June 30, 2019 | 17th | NPC | Re-elected in 2016. | 1987–2022 General Santos, Polomolok, Tampakan, Tupi |
| 5 | | | Shirlyn Bañas Nograles | June 30, 2019 | June 30, 2022 | 18th | PDP–Laban | Elected in 2019. | 1987–2022 General Santos, Polomolok, Tampakan, Tupi |
| 6 | | | Isidro D. Lumayag | June 30, 2022 | Incumbent | 19th | PFP | Elected in 2022. | 2022–present Polomolok, Tampakan, Tupi |

## Election results
### 2022

2022 Philippine House of Representatives election in South Cotabato's 1st congressional district :
| Party | Party | Candidate | Votes | % |
| | PFP | Isidro Lumayag | 80,501 | 58.95 |
| | PDP–Laban | Danny Nograles | 56,053 | 41.05 |
| Total votes | Total votes | Total votes | 136,554 | 100.00 |

### 2013

2013 Philippine House of Representatives election at South Cotabato's 1st district :
| Party | Party | Candidate | Votes | % |
| | NPC | Pedro Acharon | 138,079 | 51.43 |
| | UNA | Rogelio Pacquiao | 130,377 | 48.57 |
| Total votes | Total votes | Total votes | 268,456 | 100.00 |
| | NPC hold | NPC hold | NPC hold | NPC hold |

### 2010

2010 Philippine House of Representatives election at South Cotabato's 1st district :
| Party | 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 | Valid ballots | Valid ballots | 236,992 | 91.61 |
| Invalid or blank votes | Invalid or blank votes | Invalid or blank votes | 21,694 | 8.39 |
| Total votes | Total votes | Total votes | 258,686 | 100.00 |
| | NPC hold | NPC hold | NPC hold | NPC hold |

### 2007

2007 Philippine House of Representatives election at South Cotabato's 1st district :
| Party | Party | Candidate | Votes | % |
| | NPC | Darlene Antonino-Custodio | 139,061 | 64.49 |
| | Liberal | Manny Pacquiao | 75,908 | 35.51 |
| Valid ballots | Valid ballots | Valid ballots | 214,969 | 100.00 |
| | NPC hold | NPC hold | NPC hold | NPC hold |