Actually, to be friendly to your friendly amendment, there is a disadvantage to being specific by saying “vice-chairs” and “parliamentary secretary”. If Malcolm, as a vice-chair, is away and can't be there because he has a duty somewhere else, no one can replace him on the steering committee. It might be better to say “an NDP member” and it might be better to say “a Liberal member”. That allows for flexibility. If the vice-chair is available, the vice-chair is there. If the vice-chair is not available, one of your colleagues can replace you, and the same for Francis, and actually the same for me.
I think it's better not to say “two vice-chairs”, but “a member of the NDP, a member of the Liberals, and two government members”.