During elections, the Election Commission designates a senior government officer as Chief Election Coordinator in each Dzongkhag, whose primary function is to facilitate free and fair elections. The Election Commission also designates a government officer in each Dzongkhag as Dzongkhag Electoral Officer, whose primary duty is to revise and update Electoral Rolls for all parliamentary and local government constituencies on behalf of the Commission. These twenty Officers are each supported by staff including one or more Electoral Registration Officers appointed by the Commission. Returning Officers and their assistants are likewise designated by the Commission for one or more constituencies, reporting directly to the Commission. Returning Officers appoint a Presiding Officer for each polling station; Presiding Officers are in turn assisted by Polling Officers. Returning Officers also appoint Counting Personnel for the tallying and inspection of votes. The Election Commission may appoint independent observers, and with the approval of the Ministry of Foreign Affairs, may also include international observers, any of whom may bring apparent irregularities or violations of the law to the attention of the Election Commission.