Where the people of any township or part thereof have approved township zoning regulations in accordance with sections 519.02 to 519.25, inclusive, of the Revised Code, prior to the adoption of a county rural zoning resolution by the board of county commissioners, and the county plan includes any area covered by the township zoning plan, the zoning resolution adopted by the board of township trustees shall take precedence over the zoning resolution adopted by the board of county commissioners, unless a majority of the voters in such zoned area of the township voting on the issue have voted to have the township plan of zoning replaced with the plan of county rural zoning.