Constitution of Zambia (Amendment) 77. [No. 2 of 2016 (1) Subject to this Article and Article 78, the National Assembly shall regulate its own procedure and make Standing 29 Procedure of National Assembly Orders for the conduct of its business. (2) The proceedings of the National Assembly shall not be invalid due to— (a) a vacancy in its membership; or (b) the presence or participation of a person not entitled to be present at, or to participate in, the proceedings of the National Assembly. (3) There shall preside at a sitting of the National Assembly— (a) the Speaker; (b) in the absence of the Speaker, the First Deputy Speaker; (c) in the absence of the First Deputy Speaker, the Second Deputy Speaker; or (d) in the absence of the Second Deputy Speaker, another Member of Parliament as the members may elect for that sitting. (4) The quorum for a meeting of the National Assembly shall be one-third of the Members of Parliament. 78. (1) Except as otherwise provided in this Constitution, a question proposed for decision in the National Assembly shall be Voting in National Assembly determined by a majority of the Members of Parliament present and voting. (2) On a question proposed for decision in the National Assembly — (a) the Speaker shall have no vote; and (b) in the case of a tie, the question shall be lost. 7. The Constitution is amended by the repeal of Articles 80 to 90 inclusive and the substitution therefor of the following: Repeal and replacement of Articles 80 to 90