The returns of any such election shall be canvassed in the manner provided by law. If the majority of qualified electors voting upon said question at said election shall have voted "For sale of liquor" within the unit in which the election is held, the sale of liquor may be continued in accordance with the provisions of this title. If the majority of the qualified electors voting on such question at any such election shall vote "Against sale of liquor", then, within thirty days after such canvass no sale or purchase of liquor, save as herein provided, shall be made within such unit until such permission so to do be subsequently granted at an election held for that purpose under the provisions of this title.