In Graham County Electric Cooperative, Inc. v. Town of Safford, 95 Ariz. 174, 388 P.2d 169 (1963), the Arizona Supreme Court held that a vote by the electorate approving the acquisition of a portion of a utility's facilities located within town limits did not "imply or import future authority in the town to purchase further utility facilities either within or without the town limits in whole or in part. In order that the town purchase other facilities it must be authorized at an election held in conformity with 9-514." Id. at 184, 388 P.2d at 176.