When seats for the upper house of the Philippine Legislature were elected from territory-based districts between 1916 and 1935, the province formed part of the third senatorial district which elected two out of the 24-member senate.
The pre-war two-representative district configuration was restored upon the re-establishment of the Philippine Commonwealth in 1945, and lasted until the disbandment of Congress in 1972 as a result of the declaration of Martial Law. Two chartered cities created during this period — Cabanatuan (1950) and Palayan (1965) — remained part of the second congressional district of Nueva Ecija, by virtue of Republic Act No. 526 (§90)[4] and Republic Act No. 4475 (§42), respectively.[5]
The province was reapportioned into four congressional districts[6] under the new Constitution which was proclaimed on February 11, 1987, and elected members to the restored House of Representatives starting that same year.
Current Districts
Legislative districts and representatives of Nueva Ecija
^"List of Provinces". PSGC Interactive. National Statistical Coordination Board. Archived from the original on April 19, 2016. Retrieved August 2, 2022.
^ abcCongressional Library Bureau. "Roster of Philippine Legislators". Republic of the Philippines - House of Representatives. Retrieved March 20, 2020.