The votes cast on such question shall be counted by the election officers and returns thereof made by them, and by election officers where voting machines are used, to the prothonotary of the county, who shall lay the same before the return board for computation at the same time and in the same manner as other returns. The return board shall compute the said returns by municipalities and certify the results of the vote cast on the question to the legislative body of each municipality within the county.

Such election shall be governed by the election laws of the Commonwealth, and all penalties provided by said laws shall apply to such elections.