Nueva Ecija's at-large congressional district

Nueva Ecija's at-large congressional district was the provincewide electoral district of Nueva Ecija for Philippine national legislatures before 1987.

The district was first created ahead of the 1898 Philippine legislative election for two seats in the Malolos Congress. Epifanio de los Santos and José Turiano Santiago were elected at-large as Nueva Ecija's representatives in the National Assembly of the nascent First Philippine Republic, with a third seat allocated for an appointed delegate from Pampanga, Gregorio Macapinlac. After the fall of the Republic, the U.S. insular government was installed which reorganized a legislative assembly for representatives of the different provinces in 1907, the Philippine Assembly. Nueva Ecija was given one seat in that legislature and continued to elect its representatives from this single-member at-large district until the 1926 reapportionment into two smaller districts which took effect beginning with the 1928 Philippine House of Representatives elections.

Nueva Ecija returned to at-large elections for a seat in the National Assembly of the Second Philippine Republic in 1943. The restoration of the Commonwealth government and the House of Representatives in 1945 also restored the two districts in the province thereby eliminating the provincewide electoral district. It was recreated for the last time ahead of the 1984 Philippine parliamentary election following a shift from regional electoral districts in the interim parliament, where Nueva Ecija was included in the multi-member at-large representation of Region III (Central Luzon) from 1978 to 1984, to provincial and city district constituencies in the regular parliament.

The district became obsolete following the 1987 reapportionment that established four districts in the province under a new constitution.

Representation history
{| class=wikitable ! rowspan=2 | # ! colspan=2 | Term of office ! rowspan=2 | National Assembly ! colspan=4 | Seat A ! colspan=4 | Seat B ! colspan=4 | Seat C !Start!!End ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history
 * rowspan=2 |
 * rowspan=2 |
 * rowspan=2 |
 * - style="height:3em"
 * colspan="19" style="text-align:center;" |
 * colspan="19" style="text-align:center;" |

Nueva Ecija's at-large district for the Malolos Congress
! rowspan=2 | # ! colspan=2 | Term of office ! rowspan=2 | Legislature ! colspan=4 | Single seat !Start!!End ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history
 * colspan="19" 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="background:;" |
 * José Turiano Santiago
 * Independent
 * Elected in 1898.
 * style="background:;" |
 * Epifanio de los Santos
 * Independent
 * Elected in 1898.
 * style="background:;" |
 * Gregorio Macapinlac
 * Independent
 * Appointed.
 * style="background:;" |
 * Gregorio Macapinlac
 * Independent
 * Appointed.
 * Appointed.
 * rowspan=2 |
 * - style="height:3em"
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Nueva Ecija's at-large district for the Philippine Assembly
! rowspan=2 | # ! colspan=2 | Term of office ! rowspan=2 | Legislature ! 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 January 9, 1907.
 * rowspan="2" style="text-align:center;" | 1
 * rowspan="2" | October 16, 1907
 * rowspan="2" | October 16, 1912
 * style="text-align:center;" | 1st
 * rowspan="3" |
 * rowspan="2" style="background:;" |
 * rowspan="2" | Isauro Gabaldón
 * rowspan="2" | Nacionalista
 * Elected in 1907.
 * style="text-align:center;" | 2nd
 * Re-elected in 1909.
 * style="text-align:center;" | 2
 * October 16, 1912
 * October 16, 1916
 * style="text-align:center;" | 3rd
 * style="background:;" |
 * Lucio Gonzales
 * Nacionalista
 * Elected in 1912.
 * style="background:;" |
 * Lucio Gonzales
 * Nacionalista
 * Elected in 1912.
 * rowspan=2 |
 * - style="height:3em"
 * colspan="9" style="text-align:center;" |
 * colspan="9" style="text-align:center;" |

Nueva Ecija's at-large district for the House of Representatives of the Philippine Islands
! 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
 * style="text-align:center;" | 3
 * October 16, 1916
 * June 3, 1919
 * style="text-align:center;" | 4th
 * rowspan=5 |
 * style="background:;" |
 * Isidoro Gonzales
 * Nacionalista
 * Elected in 1916.
 * style="text-align:center;" | 4
 * June 3, 1919
 * June 6, 1922
 * style="text-align:center;" | 5th
 * style="background:;" |
 * Gaudencio Medina
 * Nacionalista
 * Elected in 1919.
 * style="text-align:center;" | 5
 * June 6, 1922
 * June 2, 1925
 * style="text-align:center;" | 6th
 * style="background:;" |
 * Hermogenes Concepción Sr.
 * Demócrata
 * Elected in 1922.
 * style="text-align:center;" | (1)
 * rowspan="2" style="text-align:center;" | 7th
 * style="background:;" |
 * Isauro Gabaldón
 * Nacionalista Consolidado
 * Elected in 1925. Disqualified for lack of residency.
 * style="text-align:center;" | 6
 * March 22, 1926
 * June 5, 1928
 * style="background:;" |
 * Feliciano Ramoso
 * Nacionalista Consolidado
 * Elected in 1926 to fill vacancy.
 * colspan="9" style="text-align:center;" | District dissolved into Nueva Ecija's 1st and 2nd districts.
 * March 22, 1926
 * June 5, 1928
 * style="background:;" |
 * Feliciano Ramoso
 * Nacionalista Consolidado
 * Elected in 1926 to fill vacancy.
 * colspan="9" style="text-align:center;" | District dissolved into Nueva Ecija's 1st and 2nd districts.
 * colspan="9" style="text-align:center;" | District dissolved into Nueva Ecija's 1st and 2nd districts.
 * rowspan=2 |
 * rowspan=2 |
 * - style="height:3em"
 * colspan="14" style="text-align:center;" |
 * colspan="14" style="text-align:center;" |

Nueva Ecija's at-large district for the National Assembly (Second Philippine Republic)
! rowspan=2 | # ! colspan=2 | Term of office ! rowspan=2 | Batasang Pambansa ! colspan=4 | Seat A ! colspan=4 | Seat B ! colspan=4 | Seat C ! colspan=4 | Seat D !Start!!End ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history ! colspan="2" style="text-align:center;" | Member ! Party ! Electoral history
 * colspan="14" style="text-align:center;" | District re-created September 7, 1943.
 * style="text-align:center;" | –
 * September 25, 1943
 * February 2, 1944
 * style="text-align:center;" | 1st
 * style="background:;" |
 * Hermogenes Concepción Sr.
 * KALIBAPI
 * Elected in 1943.
 * style="background:;" |
 * José Robles Jr.
 * KALIBAPI
 * Appointed as an ex officio member.
 * colspan="14" style="text-align:center;" | District dissolved into Nueva Ecija's 1st and 2nd districts.
 * José Robles Jr.
 * KALIBAPI
 * Appointed as an ex officio member.
 * colspan="14" style="text-align:center;" | District dissolved into Nueva Ecija's 1st and 2nd districts.
 * colspan="14" style="text-align:center;" | District dissolved into Nueva Ecija's 1st and 2nd districts.
 * rowspan=2 |
 * rowspan=2 |
 * rowspan=2 |
 * rowspan=2 |
 * - style="height:3em"
 * colspan="24" style="text-align:center;" |
 * colspan="24" style="text-align:center;" |

Nueva Ecija's at-large district for the Regular Batasang Pambansa

 * colspan="24" style="text-align:center;" | District re-created February 1, 1984.
 * - style="height:3em"
 * style="text-align:center;" | –
 * July 23, 1984
 * March 25, 1986
 * style="text-align:center;" | 2nd
 * style="background:;" |
 * Angel D. Concepcion
 * KBL
 * Elected in 1984.
 * style="background:;" |
 * Leopoldo D. Diaz
 * KBL
 * Elected in 1984.
 * style="background:;" |
 * Mario S. Garcia
 * KBL
 * Elected in 1984.
 * style="background:;" |
 * Eduardo Nonato Joson
 * KBL
 * Elected in 1984.
 * colspan="24" style="text-align:center;" | District dissolved into Nueva Ecija's 1st, 2nd, 3rd and 4th districts.
 * }
 * Eduardo Nonato Joson
 * KBL
 * Elected in 1984.
 * colspan="24" style="text-align:center;" | District dissolved into Nueva Ecija's 1st, 2nd, 3rd and 4th districts.
 * }
 * }