Ilocos Sur's 1st congressional district

Ilocos Sur's 1st congressional district is one of the two congressional districts of the Philippines in the province of Ilocos Sur. It has been represented in the House of Representatives of the Philippines since 1916 and earlier in the Philippine Assembly from 1907 to 1916. The district consists of the provincial capital city of Vigan and adjacent municipalities of Bantay, Cabugao, Caoayan, Magsingal, San Ildefonso, San Juan, San Vicente, Santa Catalina, Santo Domingo and Sinait. It is currently represented in the 19th Congress by Ronald Singson of the Nationalist People's Coalition (NPC).

Representation history
{| class=wikitable ryan ! rowspan="2" | # ! rowspan="2" colspan=2 | Member ! colspan=2 | Term of office ! rowspan="2" | Legislature ! rowspan="2" | Party ! rowspan="2" | Electoral history ! rowspan="2" | Constituent LGUs !Start!!End
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Ilocos Sur's 1st district for the Philippine Assembly

 * colspan="9" style="text-align:center;" | District created January 9, 1907.
 * rowspan="3" style="text-align:center;" | 1
 * rowspan="3" style="color:inherit;background:;" |
 * rowspan="3" | Vicente Singson Encarnacion
 * rowspan="3" | October 16, 1907
 * rowspan="3" | October 30, 1913
 * style="text-align:center;" | 1st
 * rowspan="3" | Progresista
 * Elected in 1907.
 * rowspan="2" style="text-align:center;" | 1907–1912 Cabugao, Lapog, Magsingal, Santa Catalina, Santo Domingo, Sinait, Vigan
 * style="text-align:center;" | 2nd
 * Re-elected in 1909.
 * rowspan="2" style="text-align:center;" | 3rd
 * Re-elected in 1912. Resigned on appointment as commissioner.
 * rowspan="2" style="text-align:center;" | 1912–1916 Bantay, Cabugao, Caoayan, Lapog, Magsingal, San Vicente, Santa Catalina, Santo Domingo, Sinait, Vigan
 * style="text-align:center;" | 2
 * style="color:inherit;background:;" |
 * Alberto Reyes
 * October 30, 1913
 * October 16, 1916
 * Progresista
 * Elected in 1913 to finish Encarnación's term.
 * colspan="9" style="text-align:center;" |
 * October 30, 1913
 * October 16, 1916
 * Progresista
 * Elected in 1913 to finish Encarnación's term.
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Ilocos Sur's 1st district for the House of Representatives of the Philippine Islands
! rowspan="2" | # ! rowspan="2" colspan=2 | Member ! colspan=2 | Term of office ! rowspan="2" | National Assembly ! rowspan="2" | Party ! rowspan="2" | Electoral history ! rowspan="2" | Constituent LGUs !Start!!End
 * style="text-align:center;" | (2)
 * style="color:inherit;background:;" |
 * Alberto Reyes
 * October 16, 1916
 * June 3, 1919
 * style="text-align:center;" | 4th
 * Progresista
 * Re-elected in 1916.
 * rowspan="2" style="text-align:center;" | 1916–1922 Bantay, Cabugao, Caoayan, Lapog, Magsingal, San Vicente, Santa Catalina, Santo Domingo, Sinait, Vigan
 * style="text-align:center;" | 3
 * style="color:inherit;background:;" |
 * Elpidio Quirino
 * June 3, 1919
 * June 6, 1922
 * style="text-align:center;" | 5th
 * Nacionalista
 * Elected in 1919.
 * style="text-align:center;" | 4
 * style="color:inherit;background:;" |
 * Vicente Singson Pablo
 * June 6, 1922
 * June 2, 1925
 * style="text-align:center;" | 6th
 * Demócrata
 * Elected in 1922.
 * rowspan="5" style="text-align:center;" | 1922–1935 Bantay, Cabugao, Caoayan, Lapog, Magsingal, San Ildefonso, San Vicente, Santa Catalina, Santo Domingo, Sinait, Vigan
 * style="text-align:center;" | 5
 * style="color:inherit;background:;" |
 * Simeón Ramos
 * June 2, 1925
 * June 5, 1928
 * style="text-align:center;" | 7th
 * Demócrata
 * Elected in 1925.
 * style="text-align:center;" | 6
 * style="color:inherit;background:;" |
 * Benito T. Soliven
 * June 5, 1928
 * June 2, 1931
 * style="text-align:center;" | 8th
 * Nacionalista Consolidado
 * Elected in 1928.
 * rowspan="2" style="text-align:center;" | 7
 * style="color:inherit;background:;" |
 * rowspan="2" | Pedro Singson Reyes
 * rowspan="2" | June 2, 1931
 * rowspan="2" | September 16, 1935
 * style="text-align:center;" | 9th
 * Nacionalista Consolidado
 * Elected in 1931.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 10th
 * Nacionalista Democrático
 * Re-elected in 1934.
 * Nacionalista Consolidado
 * Elected in 1931.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 10th
 * Nacionalista Democrático
 * Re-elected in 1934.
 * Re-elected in 1934.
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Ilocos Sur's 1st district for the National Assembly (Commonwealth of the Philippines)
! rowspan="2" | # ! rowspan="2" colspan=2 | Member ! colspan=2 | Term of office ! rowspan="2" | Common wealth Congress ! rowspan="2" | Party ! rowspan="2" | Electoral history ! rowspan="2" | Constituent LGUs !Start!!End
 * rowspan="2" style="text-align:center;" | (6)
 * style="color:inherit;background:;" |
 * rowspan="2" | Benito T. Soliven
 * rowspan="2" | September 16, 1935
 * rowspan="2" | December 30, 1941
 * style="text-align:center;" | 1st
 * Nacionalista Demócrata Pro-Independencia
 * Elected in 1935.
 * rowspan="2" style="text-align:center;" | 1935–1941 Bantay, Cabugao, Caoayan, Lapog, Magsingal, San Ildefonso, San Vicente, Santa Catalina, Santo Domingo, Sinait, Vigan
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 2nd
 * Nacionalista
 * Re-elected in 1938.
 * colspan="9" style="text-align:center;" | District dissolved into the two-seat Ilocos Sur's at-large district for the National Assembly (Second Philippine Republic).
 * Re-elected in 1938.
 * colspan="9" style="text-align:center;" | District dissolved into the two-seat Ilocos Sur's at-large district for the National Assembly (Second Philippine Republic).
 * colspan="9" style="text-align:center;" | District dissolved into the two-seat Ilocos Sur's at-large district for the National Assembly (Second Philippine Republic).
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Ilocos Sur's 1st district for the House of Representatives of the Commonwealth of the Philippines
! rowspan="2" | # ! rowspan="2" colspan=2 | Member ! colspan=2 | Term of office ! rowspan="2" | Congress ! rowspan="2" | Party ! rowspan="2" | Electoral history ! rowspan="2" | Constituent LGUs !Start!!End
 * colspan="9" style="text-align:center;" | District re-created May 24, 1945.
 * style="text-align:center;" | 8
 * style="color:inherit;background:;" |
 * Jesús O. Serrano
 * June 11, 1945
 * May 25, 1946
 * style="text-align:center;" | 1st
 * Nacionalista
 * Elected in 1941.
 * style="text-align:center;" | 1945–1946 Bantay, Cabugao, Caoayan, Lapog, Magsingal, San Ildefonso, San Vicente, Santa Catalina, Santo Domingo, Sinait, Vigan
 * Elected in 1941.
 * style="text-align:center;" | 1945–1946 Bantay, Cabugao, Caoayan, Lapog, Magsingal, San Ildefonso, San Vicente, Santa Catalina, Santo Domingo, Sinait, Vigan
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Ilocos Sur's 1st district for the House of Representatives of the Philippines

 * rowspan="3" style="text-align:center;" | 9
 * style="color:inherit;background:;" |
 * rowspan="3" | Floro S. Crisólogo
 * rowspan="3" | May 25, 1946
 * rowspan="3" | December 30, 1957
 * style="text-align:center;" | 1st
 * Nacionalista
 * Elected in 1946.
 * rowspan="4" style="text-align:center;" | 1946–1961 Bantay, Cabugao, Caoayan, Lapog, Magsingal, San Ildefonso, San Vicente, Santa Catalina, Santo Domingo, Sinait, Vigan
 * rowspan="2" style="color:inherit;background:;" |
 * style="text-align:center;" | 2nd
 * rowspan="2" | Liberal
 * Re-elected in 1949.
 * style="text-align:center;" | 3rd
 * Re-elected in 1953.
 * style="text-align:center;" | 10
 * style="color:inherit;background:;" |
 * Faustino B. Tobia
 * December 30, 1957
 * December 30, 1961
 * style="text-align:center;" | 4th
 * Nacionalista
 * Elected in 1957.
 * rowspan="3" style="text-align:center;" | (9)
 * style="color:inherit;background:;" |
 * rowspan="3" | Floro S. Crisólogo
 * rowspan="3" | December 30, 1961
 * rowspan="3" | October 18, 1970
 * style="text-align:center;" | 5th
 * Liberal
 * Elected in 1961.
 * rowspan="3" style="text-align:center;" | 1961–1972 Bantay, Cabugao, Caoayan, Magsingal, San Ildefonso, San Juan, San Vicente, Santa Catalina, Santo Domingo, Sinait, Vigan
 * rowspan="2" style="color:inherit;background:;" |
 * style="text-align:center;" | 6th
 * rowspan="2" | Nacionalista
 * Re-elected in 1965.
 * style="text-align:center;" | 7th
 * Re-elected in 1969. Died.
 * colspan="9" style="text-align:center;" | District dissolved into the twelve-seat Region I's at-large district for the Interim Batasang Pambansa, followed by the two-seat Ilocos Sur's at-large district for the Regular Batasang Pambansa.
 * colspan="9" style="text-align:center;" | District re-created February 2, 1987.
 * style="text-align:center;" | 11
 * style="color:inherit;background:;" |
 * Chavit Singson
 * June 30, 1987
 * June 30, 1992
 * style="text-align:center;" | 8th
 * LABAN
 * Elected in 1987.
 * rowspan="14" style="text-align:center;" | 1987–present Bantay, Cabugao, Caoayan, Magsingal, San Ildefonso, San Juan, San Vicente, Santa Catalina, Santo Domingo, Sinait, Vigan
 * rowspan="2" style="text-align:center;" | 12
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Mariano M. Tajon
 * rowspan="2" | June 30, 1992
 * rowspan="2" | June 30, 1998
 * style="text-align:center;" | 9th
 * rowspan="2" | LDP
 * Elected in 1992.
 * style="text-align:center;" | 10th
 * Re-elected in 1995.
 * rowspan="3" style="text-align:center;" | 13
 * style="color:inherit;background:;" |
 * rowspan="3" | Salacnib F. Baterina
 * rowspan="3" | June 30, 1998
 * rowspan="3" | June 30, 2007
 * style="text-align:center;" | 11th
 * LAMMP
 * Elected in 1998.
 * rowspan="2" style="color:inherit;background:;" |
 * style="text-align:center;" | 12th
 * rowspan="2" | Lakas
 * Re-elected in 2001.
 * style="text-align:center;" | 13th
 * Re-elected in 2004.
 * rowspan="2" style="text-align:center;" | 14
 * style="color:inherit;background:;" |
 * rowspan="2" | Ronald Singson
 * rowspan="2" | June 30, 2007
 * rowspan="2" | March 1, 2011
 * style="text-align:center;" | 14th
 * Lakas
 * Elected in 2007.
 * style="color:inherit;background:;" |
 * rowspan="3" style="text-align:center;" | 15th
 * Nacionalista
 * Re-elected in 2010. Resigned.
 * style="text-align:center;" rowspan="2" | 15
 * style="color:inherit;background:;" |
 * rowspan="2" | Ryan Luis V. Singson
 * rowspan="2" | May 30, 2011
 * rowspan="2" | June 30, 2013
 * Biled
 * rowspan="2" | Elected in 2011 to finish Singson's term.
 * style="color:inherit;background:;" |
 * Nacionalista (Biled)
 * style="text-align:center;" | (14)
 * style="color:inherit;background:;" |
 * Ronald Singson
 * June 30, 2013
 * June 30, 2016
 * style="text-align:center;" | 16th
 * Nacionalista
 * Elected in 2013.
 * rowspan="2" style="text-align:center;" | 16
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Deogracias Victor Savellano
 * rowspan="2" | June 30, 2016
 * rowspan="2" | June 30, 2022
 * style="text-align:center;" | 17th
 * rowspan="2" | Nacionalista
 * Elected in 2016.
 * style="text-align:center;" | 18th
 * Re-elected in 2019.
 * style="text-align:center;" | (14)
 * style="color:inherit;background:;" |
 * Ronald Singson
 * June 30, 2022
 * Incumbent
 * style="text-align:center;" | 19th
 * NPC
 * Elected in 2022.
 * }
 * Elected in 2013.
 * rowspan="2" style="text-align:center;" | 16
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Deogracias Victor Savellano
 * rowspan="2" | June 30, 2016
 * rowspan="2" | June 30, 2022
 * style="text-align:center;" | 17th
 * rowspan="2" | Nacionalista
 * Elected in 2016.
 * style="text-align:center;" | 18th
 * Re-elected in 2019.
 * style="text-align:center;" | (14)
 * style="color:inherit;background:;" |
 * Ronald Singson
 * June 30, 2022
 * Incumbent
 * style="text-align:center;" | 19th
 * NPC
 * Elected in 2022.
 * }
 * NPC
 * Elected in 2022.
 * }