The Social Democratic Party of Croatia (, SDP) is a social democratic political party in Croatia. The SDP is anti-fascist, progressive, and strongly pro-European. The SDP was formed in 1990 as the successor of the League of Communists of Croatia, the Croatian branch of the League of Communists of Yugoslavia, which had governed Croatia within the Socialist Federal Republic of Yugoslavia since World War II.

The party first won the elections in 2000 and formed a coalition government headed by Ivica Račan. After losing the 2003 general election, the party remained in opposition for eight years. In the 2011 parliamentary election, SDP won 61 out of 151 seats in the Croatian Parliament, and managed to form the 12th Croatian Government under Zoran Milanović with its partners from the Kukuriku coalition. After SDP and its coalition partners failed to achieve an agreement on forming a new government following the 2015 general election, the party returned to the opposition. Former SDP member and presidential candidate Ivo Josipović served as the third President of Croatia from 2010 to 2015. Another SDP member, Neven Mimica was the European Commissioner for International Cooperation and Development at the Juncker Commission.

The SDP is a member of the Party of European Socialists (PES), Progressive Alliance of Socialists and Democrats (S&D), Progressive Alliance (PA), and the Socialist International (SI).

History Early 1990s

The SDP was established on 3 November 1990 by the social democratic faction of the former League of Communists of Croatia (SKH), the Croatian branch of the League of Communists of Yugoslavia (SKJ).

If SDP is claimed successor of Austria-Hungary's Social Democratic Party of Croatia and Slavonia founded on 8 and 9 September 1894, it would be the oldest social democratic party in Yugoslavia, before becoming the Communist Party of Croatia as part of the League of Communists of Yugoslavia.

The SKH delegation led by Ivica Račan, along with their Slovenian counterparts, had abandoned the 14th congress of SKJ in January 1990 following a dispute with the Serbian delegation led by Slobodan Milošević over how SFR Yugoslavia should be reorganised.

At the same time, Croatia was preparing for its first multi-party election following the decision made by SKH in December 1989 which envisioned elections in April and May 1990. In February 1990 the SR Croatia parliament adopted amendments to the constitution which enabled a multi-party system. That same month SKH had rebranded themselves as the "Party of Democratic Reform" (Stranka demokratskih promjena or SDP) and went on to run in the 1990 election as SKH-SDP, coming in second behind the Croatian Democratic Union (HDZ) with 26 percent of votes and a total of 107 seats in all three houses of parliament which had 351 seat.

On 3 November 1990, the party was officially established in its current form, by dropping the initialism SKH from its name. In the August 1992 election, the first election held according to the new Constitution of Croatia which had been adopted on 22 December 1990, SDP won 5.52% of the popular vote and a total of 11 seats in the 138-seat parliament. In 1993 the party re-branded themselves again and changed their name to the "Social Democratic Party" (Socijaldemokratska partija), the name they kept to this day.

Merger with SDH In 1990, a parallel Social Democratic Party of Croatia (, SDSH) was founded. It was later renamed to the Social Democrats of Croatia (Socijaldemokrati Hrvatske, SDH). Like most parties created at the time, it was opposed to the communist government and wanted Croatia to secede from Yugoslavia, yet it had the distinction of being one of the few to present itself as left-wing. The party founders included many prominent intellectuals, including Antun Vujić and Miroslav Tuđman. This party claimed that it was continuing tradition of the historical Social Democratic Party of Croatia, created in 1894 and merged in 1919 into the Communist Party of Yugoslavia.

In the first 1990 Croatian parliamentary election, SDSH joined the centrist Coalition of People's Accord and fared badly, winning only 21 out of 351 seats. However, its position was strong enough to warrant ministerial posts in the national unity government of Franjo Gregurić which was in power from July 1991 to August 1992. However, its two ministers Bosiljko Mišetić and Zvonimir Baletić defected to the conservative Croatian Democratic Union (HDZ) soon after their appointment.

Before the 1992 parliamentary and presidential elections, SDSH was involved in bitter dispute with the SDP over its rebranding into the Social Democratic Party of Croatia. SDSH claimed that its name was stolen. The election showed SDP to be much stronger party than SDSH, which failed to win parliament seats. At the same time, SDSH leader Antun Vujić finished last in the 1992 presidential race, winning a meagre 0.7 percent of the vote. This ultimately led to SDSH and SDP patching their differences and former being incorporated into the latter in April 1994.

In the following 1995 election, SDP won 8.93 percent of the popular vote and a total of 10 seats in the parliament, coming in fourth behind the Croatian Democratic Union (HDZ), Croatian Peasant Party (HSS) and the Croatian Social Liberal Party (HSLS).

Račan government (2000–2003)

In August 1998, SDP and HSLS leaders Ivica Račan and Dražen Budiša signed a coalition agreement and proceeded to run together in the January 2000 parliamentary elections. The SDP-HSLS coalition won the election with 38.7% of the vote and 71 out of 151 seats. SDP and HSLS then formed a six-way centre-left coalition government along with the Croatian Peasant Party (HSS), the Liberal Party (LS), Croatian People's Party (HNS), and the Istrian Democratic Assembly (IDS). Račan, as the leader of the strongest party, became prime minister in the first Račan cabinet. This period was marred with constant disagreements among coalition members on various issues. The constitution was changed several times.

Račan had initially offered the post of Speaker of Parliament to Budiša, but Budiša declined hoping to win the upcoming 2000 presidential election. Following Budiša's defeat to Stjepan Mesić in February 2000, Budiša continued to serve as member of Croatian parliament. In July 2001, he opposed Račan government's decision to extradite Croatian army generals which were wanted because of, later in 2013 dismissed, charges for committing war crimes during Croatian War of Independence to the International Criminal Tribunal for the former Yugoslavia (ICTY) which caused considerable turmoil within HSLS.

In June 2001, the Istrian regionalist party Istrian Democratic Assembly (IDS) withdrew from the coalition government and its chairman Ivan Jakovčić resigned his post as Minister of European Integration, citing criticism of the way they governed Istria on the regional level which had been coming from other parties within the ruling coalition. The uneasy coalition broke apart in early July 2002 when Račan formally handed in his resignation following HSLS refusal to support the agreement made with Slovenia concerning the two countries' joint control of the Krško Nuclear Power Plant.

In late July 2002, the second Račan cabinet was formed, with members of the remaining four parties of the original coalition (following the departure of IDS and HSLS) plus two minor liberal parties which had splintered from HSLS, the Party of Liberal Democrats (Libra) and the Liberal Party (LS). This cabinet remained in power until the next elections in November 2003. SDP then ran in the 2003 election as part of a coalition with IDS, Libra and LS, but was defeated by the conservative HDZ. The SDP thus returned to opposition with the coalition winning 43 out of 151 seats in the parliament (34 of which held by SDP).

The January 2000 election win and the defeat of the ruling HDZ was seen as a turning point as it marked the first transition of power in Croatia's young democracy and upon coming into power Račan's government was seen as the country's first staunchly pro-Western government following a decade of the "authoritarian and nationalist rule" of late President Franjo Tuđman. During its term, the country signed a pre-membership agreement with the European Union, which paved the way for the formal opening of membership negotiations in October 2006. Although the six-party coalition government made a clear break from the former regime, it nevertheless failed to handle the growing social problems, unemployment and economic difficulties. Račan struggled to contain factional disputes within the coalition and appeared indecisive in dealing with Western demands to hand over war crimes suspects to the ICTY, as well as with extremists at home who vehemently opposed such extraditions.

Opposition (2003–2011)

In the 2005 presidential race, SDP opted to support independent incumbent Stjepan Mesić, who succeeded in winning his second term by an overwhelming majority of 65.9% of the vote in the run-off in front of HDZ candidate and runner-up Jadranka Kosor with 34.1%.

In 2007, the party was dealt a blow due to the death of their long-time leader and founder Ivica Račan, who died on 30 April 2007 due to complications from his previously treated kidney cancer, after he stepped down from his chairman post earlier that month. In an extraordinary party convention, former party spokesman Zoran Milanović was elected as their new leader, beating acting chairwoman and former defence minister Željka Antunović in the party election run-off. Other prominent candidates for the post were Zagreb mayor Milan Bandić and former foreign minister Tonino Picula.

For the November 2007 parliamentary election, SDP ran on an economic program with Third Way elements devised by the previously non-partisan economist Ljubo Jurčić, who was also picked to be the party's candidate for the post of prime minister in case of their election victory at a party meeting in July 2007. In the election of 25 November SDP finished a close second behind HDZ, with 56 out of 153 seats. It might have won the domestic election, but as SDP does not participate in diaspora constituency, it lost in the overall tally. Five days after the election, amid speculations that SDP might assemble a governing coalition in spite of them failing to win outright majority, he was replaced in that role by Zoran Milanović. Nevertheless, SDP failed to assemble a governing coalition, and positioned itself as the largest opposition party instead.

In the subsequent June 2009 local elections, the party failed to make significant gains on the county level, but still managed to achieve some major wins in important cities, due to the adoption of a new election system where mayors and county heads were for the first time elected directly, as opposed to the previous system which employed party lists. SDP recorded mayoral victories in a number of traditionally centre-right leaning coastal cities such as Dubrovnik, Šibenik and Trogir and also managed to win in Vukovar, a city that had been almost destroyed in the Croatian War of Independence and was regarded as HDZ stronghold ever since. They also manage to retain control of the economically most powerful parts of the country, including the capital Zagreb, the northern Adriatic city of Rijeka and also won in Istria (in coalition with IDS).

In the run up to the 2009–10 presidential race, SDP held a primary election for the very first time, in which party nominees Ljubo Jurčić and Ivo Josipović ran. Josipović won the primary by some two-thirds of the vote. Josipović later won the 2009–10 election with 60% of the vote in the second round in front of former SDP member and populist Mayor of Zagreb Milan Bandić (who was expelled that year for running in the elections) and was officially inaugurated on 18 February 2010.

Milanović government (2011–15)