Municipalities have been the most important unit of administration in Lithuania since the system of county governorship (''apskrities viršininkas'') was dissolved in 2010. Some municipalities are historically called "district municipalities" (often shortened to "district"), while others are called "city municipalities" (sometimes shortened to "city"). Each has its own elected government. The election of municipality councils originally occurred every three years, but now takes place every four years. The council appoints elders to govern the elderships. Mayors have been directly elected since 2015; prior to that, they were appointed by the council.