Issues of sub-national referendums regulated at the national level

Constitution (2005)

http://parliament.iq/manshurat/dastoreng.pdf

Article 119:One or more governorates shall have the right to organize into a region based on a request to be voted on in a referendum submitted in one of the following two methods:First: A request by one-third of the council members of each governorate intending to form a region.Second: A request by one-tenth of the voters in each of the governorates intending to form a region.

Article 4[?] Fifth: Each region or governorate may adopt any other local language as an additional official language if the majority of its population so decides in a general referendum.