Electoral system for national legislature

Electoral Commission, Kingdom of Tonga, Constitution of Tonga (last amended 2016), found in Resources, accessed 27 January 2026

Part II. Form of Government

Section: The Legislative Assembly

Article 60, Representative members: There shall be elected by the nobles of the Kingdom from their number nine nobles as representatives of the nobles and there shall be elected by electors duly qualified seventeen representatives of the people. The Legislative Assembly shall determine the boundaries of electoral districts for the election of representatives of the nobles and shall establish an independent Commission to determine the boundaries of the electoral constituencies for the election of representatives of the people: Provided that the constituency boundaries for the general election of 2010 shall be based on the recommendations of the Royal Constituency Boundaries Commission as approved by the Legislative Assembly.

Parliament of Tonga, How Parliament works?, accessed 27 January 2026

The assembly has 26 members, in which 17 members are elected by the people for 5-year term in single-seat constituencies via the single non-transferable vote system. The other 9 members are elected by the 33 hereditary nobles of Tonga.