Zamboanga's at-large congressional district

The Spanish colonial province of Zamboanga was represented in the Malolos Congress following its reorganization in 1898 for the National Assembly of the First Philippine Republic.

[4] Provincial government was re-established in Zamboanga in 1914 but was not entitled to its own representation in the national legislature.

[5] Instead, it remained a part of the larger constituency of the Department of Mindanao and Sulu under the Bureau of Non-Christian Tribes whose representatives were appointed by the Governor General beginning in 1916.

[6] The province then began to send a representative to the Commonwealth National Assembly from its single-member at-large district created under the 1935 constitution.

[7] Zamboanga was also represented in the Second Republic National Assembly during the Pacific War.