During the Second World War, the Mountain Province sent two delegates to the National Assembly of the Japanese-sponsored Second Philippine Republic: one was the provincial governor (an ex officio member), while the other was elected through a provincial assembly of KALIBAPI members during the Japanese occupation of the Philippines.
During World War II, the Mountain Province sent two delegates to the National Assembly of the Japanese-controlled Second Philippine Republic: one was the governor, who held an ex officio position, while the other was elected by a provincial assembly of KALIBAPI members during the Japanese occupation of the Philippines.