The Fono Aoao Faitulafono (Legislative Assembly) of Samoa has 49 members. Of these, 47 are elected from 41 territorial constituencies based on traditional districts. Two members are elected on a non-territorial basis by voters on the Individual Voters Roll. Until 1991 voting for candidates in traditional territorial constituencies was by matai (chiefs) suffrage only. After a 1990 plebiscite, universal suffrage was introduced with a voting age of 21.
The eligibility of candidates and voters for the two types of constituencies is different. Only registered matais may stand in territorial electorates. Voters and candidates may move from the territorial constituencies rolls to the Individual Voters Roll.
The constituencies each belong to an itūmālō (political district) and are given an official number: