La Union's 1st congressional district

La Union's 1st congressional district is one of the two congressional districts of the Philippines in the province of La Union. 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 San Fernando and adjacent municipalities of Bacnotan, Balaoan, Bangar, Luna, San Gabriel, San Juan, Santol and Sudipen. It is currently represented in the 19th Congress by Francisco Paolo Ortega of the Nationalist People's Coalition (NPC).

Representation history
{| class=wikitable ! 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;" |

La Union's 1st district for the Philippine Assembly

 * colspan="9" style="text-align:center;" | District created January 9, 1907.
 * style="text-align:center;" | 1
 * style="color:inherit;background:;" |
 * Andrés Asprer
 * October 16, 1907
 * October 16, 1909
 * style="text-align:center;" | 1st
 * Nacionalista
 * Elected in 1907.
 * rowspan="3" style="text-align:center;" | 1907–1916 Bacnotan, Balaoan, Bangar, Luna, San Fernando, San Juan
 * rowspan="2" style="text-align:center;" | 2
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Joaquín Luna
 * rowspan="2" | October 16, 1909
 * rowspan="2" | October 16, 1916
 * style="text-align:center;" | 2nd
 * rowspan="2" | Nacionalista
 * Elected in 1909.
 * style="text-align:center;" | 3rd
 * Re-elected in 1912.
 * colspan="9" style="text-align:center;" |
 * style="text-align:center;" | 3rd
 * Re-elected in 1912.
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

La Union'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
 * rowspan="2" style="text-align:center;" | 3
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Juan T. Lucero
 * rowspan="2" | October 16, 1916
 * rowspan="2" | June 6, 1922
 * style="text-align:center;" | 4th
 * rowspan="2" | Nacionalista
 * Elected in 1916.
 * rowspan="7" style="text-align:center;" | 1916–1935 Bacnotan, Balaoan, Bangar, Luna, San Fernando, San Juan
 * style="text-align:center;" | 5th
 * Re-elected in 1919.
 * style="text-align:center;" | 4
 * style="background-color:#191970|
 * Pío Ancheta
 * June 6, 1922
 * June 2, 1925
 * style="text-align:center;" | 6th
 * Nacionalista Colectivista
 * Elected in 1922.
 * style="text-align:center;" | 5
 * style="background-color:#0000FF|
 * Fausto Almeida
 * June 2, 1925
 * June 5, 1928
 * style="text-align:center;" | 7th
 * Demócrata
 * Elected in 1925.
 * style="text-align:center;" | (4)
 * style="color:inherit;background:;" |
 * Pío Ancheta
 * June 5, 1928
 * June 2, 1931
 * style="text-align:center;" | 8th
 * Nacionalista Consolidado
 * Elected in 1928.
 * style="text-align:center;" | 6
 * style="color:inherit;background:;" |
 * Mariano Alisangco
 * June 2, 1931
 * June 5, 1934
 * style="text-align:center;" | 9th
 * Independent
 * Elected in 1931.
 * style="text-align:center;" | 7
 * style="color:inherit;background:;" |
 * Francisco I. Ortega
 * June 5, 1934
 * September 16, 1935
 * style="text-align:center;" | 10th
 * Nacionalista Democrático
 * Elected in 1934.
 * style="color:inherit;background:;" |
 * Francisco I. Ortega
 * June 5, 1934
 * September 16, 1935
 * style="text-align:center;" | 10th
 * Nacionalista Democrático
 * Elected in 1934.
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

La Union'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
 * style="text-align:center;" | 8
 * style="color:inherit;background:;" |
 * Camilo Osías
 * September 16, 1935
 * December 30, 1938
 * style="text-align:center;" | 1st
 * Nacionalista Demócrata Pro-Independencia
 * Elected in 1935.
 * rowspan="2" style="text-align:center;" | 1935–1941 Bacnotan, Balaoan, Bangar, Luna, San Fernando, San Gabriel, San Juan, Santol, Sudipen
 * style="text-align:center;" | 9
 * style="color:inherit;background:;" |
 * Delfín B. Flores
 * December 30, 1938
 * December 30, 1941
 * style="text-align:center;" | 2nd
 * Nacionalista
 * Elected in 1938.
 * colspan="9" style="text-align:center;" | District dissolved into the two-seat La Union's at-large district for the National Assembly (Second Philippine Republic).
 * Elected in 1938.
 * colspan="9" style="text-align:center;" | District dissolved into the two-seat La Union's at-large district for the National Assembly (Second Philippine Republic).
 * colspan="9" style="text-align:center;" | District dissolved into the two-seat La Union's at-large district for the National Assembly (Second Philippine Republic).
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

La Union'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;" | (7)
 * style="color:inherit;background:;" |
 * Francisco I. Ortega
 * June 11, 1945
 * May 25, 1946
 * style="text-align:center;" | 1st
 * Nacionalista
 * Elected in 1941.
 * style="text-align:center;" | 1945–1946 Bacnotan, Balaoan, Bangar, Luna, San Fernando, San Gabriel, San Juan, Santol, Sudipen
 * Elected in 1941.
 * style="text-align:center;" | 1945–1946 Bacnotan, Balaoan, Bangar, Luna, San Fernando, San Gabriel, San Juan, Santol, Sudipen
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

La Union's 1st district for the House of Representatives of the Philippines

 * style="text-align:center;" | (7)
 * style="color:inherit;background:;" |
 * Francisco I. Ortega
 * May 25, 1946
 * December 30, 1949
 * style="text-align:center;" | 1st
 * Liberal
 * Re-elected in 1946.
 * rowspan="7" style="text-align:center;" | 1946–1972 Bacnotan, Balaoan, Bangar, Luna, San Fernando, San Gabriel, San Juan, Santol, Sudipen
 * style="text-align:center;" | 10
 * style="color:inherit;background:;" |
 * Miguel G. Rilloraza Jr.
 * December 30, 1949
 * December 30, 1953
 * style="text-align:center;" | 2nd
 * Nacionalista
 * Elected in 1949.
 * rowspan="3" style="text-align:center;" | (7)
 * rowspan="3" style="color:inherit;background:;" |
 * rowspan="3" | Francisco I. Ortega
 * rowspan="3" | December 30, 1953
 * rowspan="3" | December 30, 1965
 * style="text-align:center;" | 3rd
 * rowspan="3" | Nacionalista
 * Elected in 1953.
 * style="text-align:center;" | 4th
 * Re-elected in 1957.
 * style="text-align:center;" | 5th
 * Re-elected in 1961.
 * style="text-align:center;" | 11
 * style="color:inherit;background:;" |
 * Magnolia Antonino
 * December 30, 1965
 * November 14, 1967
 * style="text-align:center;" | 6th
 * Independent
 * Elected in 1965. Resigned on election as senator.
 * style="text-align:center;" | 12
 * style="color:inherit;background:;" |
 * Joaquín L. Ortega
 * December 30, 1969
 * September 23, 1972
 * style="text-align:center;" | 7th
 * Nacionalista
 * Elected in 1969. Removed from office after imposition of martial law.
 * 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 La Union's at-large district for the Regular Batasang Pambansa.
 * colspan="9" style="text-align:center;" | District re-created February 2, 1987.
 * rowspan="3" style="text-align:center;" | 13
 * style="color:inherit;background:;" |
 * rowspan="3" | Victor Francisco C. Ortega
 * rowspan="3" | June 30, 1987
 * rowspan="3" | June 30, 1998
 * style="text-align:center;" | 8th
 * Nacionalista
 * Elected in 1987.
 * rowspan="12" style="text-align:center;" | 1987–present Bacnotan, Balaoan, Bangar, Luna, San Fernando, San Gabriel, San Juan, Santol, Sudipen
 * rowspan="2" style="color:inherit;background:;" |
 * style="text-align:center;" | 9th
 * rowspan="2" | NPC
 * Re-elected in 1992.
 * style="text-align:center;" | 10th
 * Re-elected in 1995.
 * rowspan="3" style="text-align:center;" | 14
 * rowspan="3" style="color:inherit;background:;" |
 * rowspan="3" | Manuel C. Ortega
 * rowspan="3" | June 30, 1998
 * rowspan="3" | June 30, 2007
 * style="text-align:center;" | 11th
 * rowspan="3" | NPC
 * Elected in 1998.
 * style="text-align:center;" | 12th
 * Re-elected in 2001.
 * style="text-align:center;" | 13th
 * Re-elected in 2004.
 * rowspan="3" style="text-align:center;" | (13)
 * rowspan="3" style="color:inherit;background:;" |
 * rowspan="3" | Victor Francisco C. Ortega
 * rowspan="3" | June 30, 2007
 * rowspan="3" | June 30, 2016
 * style="text-align:center;" | 14th
 * rowspan="3" | Lakas
 * Elected in 2007.
 * style="text-align:center;" | 15th
 * Re-elected in 2010.
 * style="text-align:center;" | 16th
 * Re-elected in 2013.
 * rowspan="2" style="text-align:center;" | 15
 * style="color:inherit;background:;" |
 * rowspan="2" | Pablo C. Ortega
 * rowspan="2" | June 30, 2016
 * rowspan="2" | June 30, 2022
 * style="text-align:center;" | 17th
 * Liberal
 * Elected in 2016.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 18th
 * NPC
 * Re-elected in 2019.
 * style="text-align:center;" | 16
 * style="color:inherit;background:;" |
 * Francisco Paolo P. Ortega V
 * June 30, 2022
 * Incumbent
 * style="text-align:center;" | 19th
 * NPC
 * Elected in 2022.
 * }
 * rowspan="2" | Pablo C. Ortega
 * rowspan="2" | June 30, 2016
 * rowspan="2" | June 30, 2022
 * style="text-align:center;" | 17th
 * Liberal
 * Elected in 2016.
 * style="color:inherit;background:;" |
 * style="text-align:center;" | 18th
 * NPC
 * Re-elected in 2019.
 * style="text-align:center;" | 16
 * style="color:inherit;background:;" |
 * Francisco Paolo P. Ortega V
 * June 30, 2022
 * Incumbent
 * style="text-align:center;" | 19th
 * NPC
 * Elected in 2022.
 * }
 * Elected in 2022.
 * }