In order to ensure adequate representation for Taiwan's rapidly expanding population and to compensate for the passing of life-term representatives, supplementary elections began to be held in Taiwan in 1972.
隨著台灣人口迅速增長，及部分委員、代表老成凋謝，在維持法統、充實成員、及強化各民意機關職權功能的多方考慮下，政府自民國六十一年開始辦理「增額中央民意代表選舉」。