 Each of these states has a separate head of government called the "Ketua Menteri" or Chief Minister.The four Yang di-Pertua Negeri are members of the Conference of Rulers, however they cannot participate in the election of the Yang di-Pertuan Agong, discussions related to the privileges of the Malay rulers and matters concerning the observance of Islam.In Nigeria (once a colony governed by a single British Governor before independence), each State has a Governor who is popularly elected by the citizens of the State.