An elected Iraqi parliament first formed following the establishment of a constitutional monarchy in 1925. The 1925 constitution called for a bicameral parliament whose lower house, the Chamber of Deputies of Iraq or Council of Representatives would be elected based on universal manhood suffrage. The upper house, the Senate of Iraq was appointed by the king. Sixteen elections took place between 1925 and the coup of 1958. On January 17, 1953 elections for the Chamber of Deputies took place. Following controversy over the implementation of the so-called Baghdad Pact, Prime Minister Nuri Pasha as-Said called for elections the following year, in early 1954. As-Said dissolved the assembly shortly thereafter and began to rule by decree, but opposition forced him to hold a third election within three years. The second 1954 election was very corrupt, with as-Said's political enemies banned from running, and widespread voter coercion. The assembly was suspended yet again, and in 1958 a military coup deposed as-Said and the monarchy, and abolished the parliament.
The 1970 constitution created a republic with an elected National Assembly. However, elections for the Assembly did not take place until June 1980, under Iraq's new military president, Saddam Hussein. Several more elections took place between 1989 and 2003. Elections for its members were not considered free and fair by the international community. Only members of Hussein's own Baath Party were ever elected.
Under the permanent constitution approved on October 15, 2005, legislative authority is vested in two bodies, the Council of Representatives and the Council of Union. The Council of Representatives consists of 325 members elected for four years, with two sessions in each annual term. The Council passes federal laws, oversees the executive, ratifies treaties, and approves nominations of specified officials. It elects the president of the republic, who selects a prime minister from the majority coalition in the Council. Elections for the Council of Representatives were held on December 15, 2005. The Council first met on March 16, 2006, exactly one year after the first meeting of the transitional assembly. The Council of Representatives of Iraq has the same name in Arabic as the lower legislative houses of Bahrain, Morocco, Jordan, and Yemen, and as the unicameral legislatures of Lebanon and Tunisia. However, a number of different English terms are used to refer to these bodies. The Council of Union, or Federation Council, will consist of representatives from Iraq's regions and governorates. Its precise composition and responsibilities are not defined in the constitution and will be determined by the Council of Representatives.
A group of Sunni lawmakers boycotted parliament in a June 2007 protest of the removal of the speaker, Mahmoud al-Mashhadani, after a series of controversial actions. They returned in July after the speaker was re-instated with the understanding that he would quietly resign after a few sessions. A group of Shiite members also returned in July after a boycott which gained them an investigation into the bombing of a Shiite mosque, along with reconstruction and improved security. The parliament was under pressure from the United States to pass legislation dealing with members of the Baath party, distribution of oil revenues, regional autonomy, and constitutional reform, by September 2007.
2009 electoral reform
The Iraqi cabinet approved a draft elections law in September 2009. However, it took two months and ten delays for the law to pass in the Council of Representatives. The main areas of dispute concerned the "open list" electoral system and the voters roll in Kirkuk Governorate, which Arab and Turkmen parties alleged had been manipulated by the Kurdistan Regional Government of Iraq. UNAMI advised the electoral system was changed to allow people to vote for individuals as well as party lists under the open list form of proportional representation. The last national elections had used a closed list system, but the Iraqi governorate elections of 2009 had used open lists. In the end, all parties except for the Kurdistani Alliance agreed to support open lists which was adopted. The law increased the size of the Council from 275 to 325 members—equal to one seat per 100,000 citizens, as specified in the Constitution of Iraq.
2016 protests
The parliament was stormed by protesters in April 2016; the protestors also attacked buildings within the parliamentary complex.
As a result of the ongoing 2019 Iraqi protests, the Council of Representatives approved a new law on 24 December 2019 which aims to make it easier for independent politicians to win a seat in the Council of Representatives. The new law will see each of Iraq's governorates split into several electoral districts, with one legislator being elected per 100,000 people, thus replacing its proportional representation system for a district-based system. The new law will also prevent parties from running on unified lists.