Section 32Omnibus Election Code of the Philippines (Batas Pambansa Blg. 881), Sec. 32

Apportionment of members of the Sangguniang Pampook. - The Members of the Sangguniang Pampook of Region IX and of Region XII shall be apportioned as follows:

Region IX:

Basilan, one (1);

Sulu, three (3);

Tawi-Tawi, one (1);

Zamboanga del Norte including the cities of Dipolog and Dapitan, four, (4);

and Zamboanga del Sur, including the City of Pagadian, six (6);

and Zamboanga City, two (2);

Region XII:

Lanao del Norte, two (2);

Iligan City, one (1);

Lanao del Sur including the City of Marawi, four (4);

Maguindanao including the City of Cotabato, four (4);

North Cotabato, four (4);

and Sultan Kudarat, two (2).