Prior to gaining separate representation, areas now under the jurisdiction of Sultan Kudarat were represented under the Department of Mindanao and Sulu (1917–1935) and Cotabato (1935–1972).
The enactment of Presidential Decree No. 341 on November 22, 1973 created the Province of Sultan Kudarat out of the reduced Cotabato Province's southern municipalities.[1] This new province was represented in the Interim Batasang Pambansa as part of Region XII from 1978 to 1984.
The approval of Republic Act No. 9357 on October 10, 2006 increased Sultan Kudarat's representation by reapportioning the province into two congressional districts,[3] which elected their separate representatives starting in the 2007 elections.
^ abcdCongressional Library Bureau. "Roster of Philippine Legislators". Republic of the Philippines, House of Representatives. Retrieved February 7, 2017.