The CEAZs consist of seven members and a secretary who are appointed by the CEC upon the proposal of parliamentary parties. The Code also requires political balance between the parliamentary majority and the parliamentary opposition in the composition of the CEAZs. Article 28 foresees that two members are proposed by the main party of the parliamentary majority, two members by the main party of the parliamentary opposition, one member by the second party of the parliamentary majority and one member by the second party of the parliamentary opposition. In half of the CEAZs, the seventh member is proposed by the largest party of the parliamentary majority, while in the other half the seventh member is proposed by the largest party of the parliamentary opposition.