[3] The province first elected its representative provincewide at-large for the Malolos Congress of the First Philippine Republic.

In 1907, when the Philippine Assembly was established, the province had no representation as it was then classified as a special province under the supervision of the Department of the Interior Bureau of Non-Christian Tribes.

[4] Since 1916 when it was re-established as a specially organized province separate from its former Comandancia de Quiañgan which became the Ifugao sub-province under Jones Law, Nueva Vizcaya has been entitled to one member in the House of Representatives.

[5] It remains as a single-member district, except for a brief period between 1943 and 1944 when a second seat was allocated in the National Assembly of the Second Philippine Republic.

[6] The district is currently represented by Luisa Lloren Cuaresma of the United Nationalist Alliance (UNA).