(1) A general election of members of Parliament shall be held on the second Tuesday in August in every fifth year.
(2) Whenever a vacancy occurs in the office of a member of the National Assembly under Article 97 (1) (c), or of the Senate under Article 98 (1) (b), (c) or (d), the respective Speaker shall, within twenty-one days of the occurrence of the vacancy, give notice in writing of the vacancy to--
(a) the Independent Electoral and Boundaries Commission;
and
(b) the political party on whose party list the member was elected or nominated.
(3) A vacancy referred to in clause (2) shall, subject to clause (5), be filled in the manner prescribed by an Act of Parliament within twenty-one days of the notification by the respective Speaker.
(4) Whenever a vacancy occurs in the office of a member of the National Assembly elected under Article 97 (1) (a) or (b), or of the Senate elected under Article 98 (1) (a)--
(a) the respective Speaker shall, within twenty-one days after the occurrence of the vacancy, give notice in writing of the vacancy to the Independent Electoral and Boundaries Commission; and
(b) a by-election shall be held within ninety days of the occurrence of the vacancy, subject to clause (5).
(5) A vacancy referred to in clause (4) shall not be filled within the three months immediately before a general election.