Catanduanes's at-large congressional district

Catanduanes's at-large congressional district, also known as Catanduanes's lone district, is the sole congressional district of the Philippines in the province of Catanduanes. Catanduanes has been represented in the country's various national legislatures since 1898. Since 1946 when it was reorganized as an independent province separate from Albay, Catanduanes has been entitled to one member in the House of Representatives of the Philippines, elected provincewide at-large, except for the period under the Fourth Philippine Republic between 1978 and 1984 when its representation was absorbed by the regional at-large assembly district of Region V.

The district is currently represented in the 19th Congress by Leo Rodriguez, who is an independent.

Representation history
{| class=wikitable ! rowspan=2 | # ! colspan=2 | Term of office ! rowspan=2 | National Assembly ! colspan=4 | Seat A ! colspan=4 | Seat B !Start!!End ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history
 * rowspan=2 |
 * rowspan=2 |
 * - style="height:3em"
 * colspan="14" style="text-align:center;" |
 * colspan="14" style="text-align:center;" |

Catanduanes's at-large district for the Malolos Congress
! rowspan=2 | # ! colspan=2 | Term of office ! rowspan=2 | Congress ! colspan=4 | Single seat !Start!!End ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history
 * colspan="14" style="text-align:center;" | District created June 18, 1898.
 * - style="height:3em"
 * style="text-align:center;" | –
 * September 15, 1898
 * March 23, 1901
 * style="text-align:center;" | 1st
 * style="color:inherit;background:;" |
 * José Alejandrino
 * Independent
 * Appointed.
 * style="color:inherit;background:;" |
 * Marcelino Santos
 * Independent
 * Appointed.
 * style="color:inherit;background:;" |
 * Marcelino Santos
 * Independent
 * Appointed.
 * rowspan=2 |
 * rowspan=59 colspan=5 style="text-align:center;" | Seats eliminated
 * - style="height:3em"
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Catanduanes's at-large district for the House of Representatives of the Philippines
! rowspan=2 | # ! colspan=2 | Term of office ! rowspan=2 | Batasang Pambansa ! colspan=4 | Single seat !Start!!End ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history
 * colspan="9" style="text-align:center;" | District re-created September 26, 1945.
 * style="text-align:center;" | 1
 * May 25, 1946
 * December 30, 1949
 * style="text-align:center;" | 1st
 * rowspan=7 |
 * style="color:inherit;background:;" |
 * Francisco Perfecto
 * Nacionalista
 * Redistricted from Albay's 4th district and re-elected in 1946.
 * style="text-align:center;" | 2
 * December 30, 1949
 * December 30, 1953
 * style="text-align:center;" | 2nd
 * style="color:inherit;background:;" |
 * Severiano de León
 * Liberal
 * Elected in 1949.
 * style="text-align:center;" | (1)
 * December 30, 1953
 * December 30, 1957
 * style="text-align:center;" | 3rd
 * style="color:inherit;background:;" |
 * Francisco Perfecto
 * Nacionalista
 * Elected in 1953.
 * rowspan="4" style="text-align:center;" | 3
 * rowspan="4" | December 30, 1957
 * rowspan="4" | September 23, 1972
 * style="text-align:center;" | 4th
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="4" | José M. Alberto
 * rowspan="2" | Liberal
 * Elected in 1957.
 * style="text-align:center;" | 5th
 * Re-elected in 1961.
 * style="text-align:center;" | 6th
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Nacionalista
 * Re-elected in 1965.
 * style="text-align:center;" | 7th
 * Re-elected in 1969. Removed from office after imposition of martial law.
 * colspan="9" style="text-align:center;" | District dissolved into the twelve-seat Region V's at-large district for the Interim Batasang Pambansa.
 * style="text-align:center;" | 6th
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="2" | Nacionalista
 * Re-elected in 1965.
 * style="text-align:center;" | 7th
 * Re-elected in 1969. Removed from office after imposition of martial law.
 * colspan="9" style="text-align:center;" | District dissolved into the twelve-seat Region V's at-large district for the Interim Batasang Pambansa.
 * colspan="9" style="text-align:center;" | District dissolved into the twelve-seat Region V's at-large district for the Interim Batasang Pambansa.
 * colspan="9" style="text-align:center;" | District dissolved into the twelve-seat Region V's at-large district for the Interim Batasang Pambansa.
 * rowspan=2 |
 * - style="height:3em"
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Catanduanes's at-large district for the Regular Batasang Pambansa
! rowspan=2 | # ! colspan=2 | Term of office ! rowspan=2 | Congress ! colspan=4 | Single seat !Start!!End ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history
 * colspan="9" style="text-align:center;" | District re-created February 1, 1984.
 * - style="height:3em"
 * style="text-align:center;" | (3)
 * July 23, 1984
 * March 25, 1986
 * style="text-align:center;" | 2nd
 * style="color:inherit;background:;" |
 * José M. Alberto
 * KBL
 * Elected in 1984.
 * José M. Alberto
 * KBL
 * Elected in 1984.
 * rowspan=2 |
 * - style="height:3em"
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Catanduanes's at-large district for the House of Representatives of the Philippines

 * colspan="9" style="text-align:center;" | District re-created February 2, 1987.
 * style="text-align:center;" | 4
 * June 30, 1987
 * November 15, 1987
 * style="text-align:center;" | 8th
 * rowspan="12" |
 * style="color:inherit;background:;" |
 * Moises M. Tapia
 * Independent
 * Elected in 1987. Died in office.
 * rowspan="3" style="text-align:center;" | 5
 * rowspan="3" | June 30, 1992
 * rowspan="3" | June 30, 2001
 * style="text-align:center;" | 9th
 * rowspan="3" style="color:inherit;background:;" |
 * rowspan="3" | Leandro B. Verceles Jr.
 * rowspan="3" | Lakas
 * Elected in 1992.
 * style="text-align:center;" | 10th
 * Re-elected in 1995.
 * style="text-align:center;" | 11th
 * Re-elected in 1998.
 * rowspan="3" style="text-align:center;" | 6
 * rowspan="3" | June 30, 2001
 * rowspan="3" | June 30, 2010
 * style="text-align:center;" | 12th
 * rowspan="3" style="color:inherit;background:;" |
 * rowspan="3" | Joseph Santiago
 * rowspan="3" | NPC
 * Elected in 2001.
 * style="text-align:center;" | 13th
 * Re-elected in 2004.
 * style="text-align:center;" | 14th
 * Re-elected in 2007.
 * rowspan="3" style="text-align:center;" | 7
 * rowspan="3" | June 30, 2010
 * rowspan="3" | June 30, 2019
 * style="text-align:center;" | 15th
 * rowspan="2" style="color:inherit;background:;" |
 * rowspan="3" | Cesar V. Sarmiento
 * rowspan="2" | Liberal
 * Elected in 2010.
 * style="text-align:center;" | 16th
 * Re-elected in 2013.
 * style="text-align:center;" | 17th
 * style="color:inherit;background:;" |
 * PDP–Laban
 * Re-elected in 2016.
 * style="text-align:center;" | 8
 * June 30, 2019
 * June 30, 2022
 * style="text-align:center;" | 18th
 * style="color:inherit;background:;" |
 * Hector S. Sanchez
 * Lakas
 * Elected in 2019.
 * style="text-align:center;" | 9
 * June 30, 2019
 * Incumbent
 * style="text-align:center;" | 19th
 * style="color:inherit;background:;" |
 * Eulogio R. Rodriguez
 * Independent
 * Elected in 2022.
 * }
 * Hector S. Sanchez
 * Lakas
 * Elected in 2019.
 * style="text-align:center;" | 9
 * June 30, 2019
 * Incumbent
 * style="text-align:center;" | 19th
 * style="color:inherit;background:;" |
 * Eulogio R. Rodriguez
 * Independent
 * Elected in 2022.
 * }
 * }