The President is elected via the two-round system.[2] Of the 167 members of the National Assembly, 156 are elected by the first-past-the-post system in single-member constituencies, with a further eight appointed by the President and three others being ex officio members: the vice president, the Speaker and one deputy speaker elected from outside the National Assembly (while the second deputy speaker is chosen from the elected members of the house).[3] The voting age is 18, whilst National Assembly candidates must be at least 21.[4]