15. Except for the cases contemplated in the first paragraph of section 23.1, six members including the president or the vice-president are a quorum of the Commission. In case of a tie-vote, the president or, if he is absent, the vice-president has a casting vote.
1977, c. 20, s. 15; 1981, c. 2, s. 4; 1989, c. 53, s. 12.