Chief Election Commissioner as its chairman (who is a judge or retired judge of the Supreme Court or a senior civil servant who has served at least 20 years or has retired in BPS-22 or is a technocrat) and four appointed members from each four provinces, each of whom is a judge of the four high courts of the four provinces; all appointed by the president by constitution. After approving the consultations from the chief justices of high courts of four provinces and the chief election commissioner, the president constitutionally approves the appointments of the designated members of the Election Commission. The Chief Election Commissioner is appointed by the president, in his/her discretion, for a term of 3 years. The Constitution grants the c ommissioner the security of tenure and financial autonomy. Levels of elections Parliamentary elections Assemblies elections Pakistan has a parliamentary system in which, the executive and legislature are elected directly by public voting in constituencies on first-past-the-post system through a secret ballot. Article 222–229 of the Constitution of Pakistan forbids the candidate from the membership of National Assembly and the provincial assemblies simultaneously. In direct elections, a candidate who obtains the highest number of votes in a constituency, is declared elected as a member of National Assembly or a provincial assembly. The seats in the National Assembly are allocated to each of four provinces, the FATA and the federal capital on the basis of population in accordance with the last officially published census. Members to the seats reserved for women and non-Muslims, are elected in accordance with the law through proportional representation system of political partys' lists of candidates on the basis of total number of general seats secured by each political party in the National Assembly or a provincial assembly. The National Assembly has 342 seats, usually elected for five year terms; however, if the National Assembly is dissolved, a general elections must be called within ninety days, according to the constitution. Senate elections The Senate consists of 104 members, of whom 14 members are elected by each provincial assembly, eight members are elected from FATA by members of National Assembly from these areas, two members (one woman and one technocrat) are elected from the federal capital also by members of National Assembly; four women and four technocrats are elected by members of each provincial assembly. One seat in the Senate is reserved for minorities in