The electoral system is based on single-member constituencies. The law (amendments to the Constitution and to the Parliamentary Elections Act) providing for group representation constituencies also stipulated that the total number of members of Parliament from group representation constituencies had to total less than half the total number of members. Slightly more than half the constituencies would remain single-member constituencies. The candidate receiving the largest number of votes wins the election in that constituency. The consequence of this electoral rule, common to most Britishstyle constitutions, is to eliminate parliamentary representation for minority parties and to encourage the organization of parties whose candidates can win pluralities in many constituencies. In theory it is possible for a party to win every seat in parliament by receiving a plurality in every constituency.

Data as of December 1989