At the same time that the board of supervisors of each affected county issues a proclamation and notice of election for the purpose of determining whether the proposed consolidated county shall be organized, the boards shall issue a proclamation and notice of an election to be held on the same day in each affected county, with the same election officers, for the election of officers and the location of the county seat of the proposed consolidated county if the vote at the election is in favor of organizing the proposed consolidated county.