After the political reforms on 2016, the city is divided for administrative purposes into 16 boroughs (''demarcaciones territoriales'', colloquially ''alcadias''), formerly called ''delegaciones''. While they are not fully equivalent to municipalities, the boroughs have gained significant autonomy. Formerly appointed by the Federal District's head of government, local authorities were first elected directly by plurality in 2000. From 2016, each borough is headed by a mayor, expanding their local government powers.