. The Sabor, in its various forms, has represented the identity and opinions of
Croats from the
diets of the medieval nobility to the modern parliament. The oldest Sabor whose records are preserved was held in
Zagreb on 19 April 1273 as the
Congregatio Regni totius Sclavonie generalis or
Universitas nobilium Regni Sclavoniae (General diet of the entire kingdom of Slavonia or Community of the nobility of the kingdom of Slavonia). Its decisions had legislative power. The 1527 Parliament decision was a decisive event of fundamental importance for the extension and confirmation of Croatian statehood, as described by the Constitution of Croatia. Following the entry into the Habsburg Monarchy, the Sabor became a regular noble diet, and its official title gradually stabilised by 1558 to the Parliament of the Kingdom of Croatia and Slavonia. In the
Kingdom of Dalmatia, two major parties were the
People's Party, a branch of the People's Party active in the
Kingdom of Croatia-Slavonia, and the
Autonomist Party, which advocated maintaining the autonomy of Dalmatia, opposing the People's Party's demands for unifying Croatia-Slavonia and Dalmatia. The Autonomist Party was also linked to
Italian irredentism. By the 1900s, the Party of Rights also made electoral gains in Dalmatia. In Dalmatia, the Autonomists won the first three elections held there in 1861, 1864 and 1867, while those from 1870 to 1908 were won by the People's Party. In 1861–1918, there were 17 elections in Croatia-Slavonia and 10 in Dalmatia. The
Cvetković–Maček Agreement of August 1939 established the autonomous
Province of Croatia, or
Banovina of Croatia, in which the Yugoslav government retained control of defence, internal security, foreign affairs, trade, and transport, while other matters were left to the Croatian Sabor and a crown-appointed
ban (
Viceroy or governor). Before any elections were held, the establishment was made obsolete with the beginning of
World War II and the establishment of the
Independent State of Croatia which banned all political opposition. In 1942, three sessions of an unelected Sabor were held in the Independent State of Croatia; these were held between 23 February and 28 December 1942, when it was formally dissolved. The assembly had no real power as the state was under the direct rule of (the fascist)
Ante Pavelić. After the war, the Communists ran unopposed in the 1945 elections; all opposition parties boycotted the elections due to coercion and intimidation by the
OZNA secret police and the
Communist Party, aimed at eliminating electoral dissent. Once in power, the Communists introduced a single-party political system, with the
Communist Party of Yugoslavia (from 1952 the
League of Communists of Yugoslavia) as the ruling party and the
Communist Party of Croatia (from 1952 the
League of Communists of Croatia) as a branch party. In January 1990, the Communist Party fragmented along national lines, with the Croatian
faction demanding a looser federation. During Communist rule, the Sabor went from a unicameral parliament as specified by the 1947 constitution, to bicameral in 1953, changing again in 1963 to as many as five chambers and then to three in 1974. The constitutional amendments of 1971 established the Presidency of the Sabor, and one of its functions became
representing Croatia, The first political party founded in Croatia since the beginning of the Communist rule was the Croatian Social Liberal Party (HSLS), established on 20 May 1989, followed by the Croatian Democratic Union (HDZ) on 17 June 1989. In December,
Ivica Račan became the head of the reformed Communist party. At this time, the Communist party decided to cancel political trials, release political prisoners and endorse a
multi-party political system. The Civil Organisations Act was formally amended to allow multiple political parties on 11 January 1990, legalising the new parties. By the time of the first round of the
first multi-party elections, held on 22 April 1990, there were 33 registered parties. There were single-seat constituencies for half of the seats and a single nationwide constituency (through election lists) for the remaining seats. Still, the most relevant parties and coalitions were the renamed Communist party (the League of Communists of Croatia — Party of Democratic Changes), the HDZ and the
Coalition of People's Accord (KNS), which included the HSLS, led by
Dražen Budiša, and the HSS, which resumed operating in Croatia in December 1989. The
runoff election, open to any candidate receiving at least 7% of the vote, The HDZ maintained a parliamentary majority until the 2000 parliamentary elections when it was defeated by the SDP led by Račan. The HDZ returned to power in the
2003 elections, while the SDP remained the largest opposition party. ==Parliamentary powers==