The board of county commissioners of any county having a population of more than thirty-five thousand (35,000) and not more than fifty thousand (50,000) and an assessed valuation of more than one hundred and ten million dollars ($110,000,000) owning a county farm or county home may after having submitted the proposition to and having received the approval of a majority of the electors voting at an election called and held as required by Kan. Stat. Ann. § 19-211, sell all or any portion of the county farm or home.