In all counties, cities, towns and precincts in which voting machines are used, all the provisions of this Act, and not inconsistent with the provisions of this article, relating to the furnishing of ballot boxes, printing and furnishing official ballots and supplies in such number as provided by law, the canvassing of the ballots and making the proper return of the result of the election, shall, to the extent necessary to make this article effective, apply with full force and effect; Provided, however, that the number of ballots to be printed shall be in the discretion of the election authority.