The island of Tongatapu has ten constituencies, Vavaʻu three, Haʻapai two and ʻEua and Niuatoputapu/Niuafoʻou one each.[18] Nine seats are held by members of the nobility who elect representatives amongst themselves.[19] The Cabinet formed by a Prime Minister may include up to four members not elected to the Assembly, who then automatically become members of the legislature.[19] Around 60,000 voters were eligible to vote.[20]