Furthermore, in Nigeria, though the hundreds of sub-regional polities that exist there are not provided for in the current constitution, they are nevertheless legally recognised aspects of the structure of governance that operates in the nation. For example, the Yoruba city-state of Akure in south-western Nigeria is something of an elective monarchy: its reigning "Oba Deji" has to be chosen by an electoral college of nobles from amongst a finite collection of royal princes of the realm upon the death or removal of an incumbent.