Within the Socialist Party On 5 October 2010, Ferenc Gyurcsány announced to the Socialist Party (MSZP) party executive that he was founding a platform named the Democratic Coalition within the party. He stated that he would organize "a broad, open social community for 1989 Democrats", and political representation for them. The mood at the meeting was calm, but several party officials expressed disagreement with him. The plan, however, pushed through. The Democratic Coalition held its inaugural meeting at 2 p.m. in the Szent István Park in the 13th District on 22 October 2010. Meanwhile, MSZP deputy chairman
András Balogh told newspaper
Népszava that the party performed poorly at the elections due to several mistakes which included incompetence of Gyurcsány's while in government, the abandonment of
left-wing values, complacency, and the fact that Gyurcsány was involved in corruption. The former
prime minister's group became the MSZP's seventh platform. The platforms within the MSZP held a debate in May 2011 on whether the party should develop as an alliance between left-wing groups or a collective party welcoming non-leftist groups and politicians – a broader alternative to the ruling party
Fidesz. The latter idea was only supported by the Democratic Coalition Platform. Representatives from all seven platforms of the party agreed that the Socialists did not need a "chieftain", an "Orbán of the Left", but a team leader. This was according to
István Hiller, the head of the Social Democratic Platform, in an interview with reporters during a break of the meeting. He dismissed Gyurcsány's idea of embracing
liberal and
conservative trends, stating that Gyurcsány's model would make the party dysfunctional.
New party On 22 October 2011, Gyurcsány announced he was leaving the Hungarian Socialist Party (MSZP) and would set up a new parliamentary group after persuading the necessary number of lawmakers to join him. The new Democratic Coalition party was to be a "Western, Left-wing" formation with ten lawmakers. Gyurcsány announced on the first anniversary of the founding of its forerunner, the Democratic Coalition Platform. He stated that he had decided to leave the MSZP because the party had failed in its efforts to transform itself. Socialist representatives strongly condemned Gyurcsány, who had signed a pledge to stay on in the party the previous week. In his speech Gyurcsány branded the new constitution as "illegitimate" and insisted that members and heads of the independent branches of state such as the constitutional court and the public prosecutor "exclusively serve
Viktor Orbán". The former Democratic Party (
Demokrata Párt) changed its name to Democratic Coalition (DK) and elected Gyurcsány its leader on 6 November 2011. At a press conference, Gyurcsány announced that the renewed party had elected
Tamás Bauer,
József Debreczeni,
Csaba Molnár and
Péter Niedermüller as deputy chairmen. The announcement stated that DK would be Hungary's "most democratic party" with all the members electing its officials directly at the party congress, adding that the authority of each member in the party's 12-strong presidium and the chairman itself will be virtually the same. The new party initially received over 3,800 membership applications. The Democratic Coalition was not allowed to form a new party faction until the spring after leaving the MSZP, based on the parliament's Constitutional and Procedural Committee decision on 7 November 2011. According to the parliamentary rules, any parliamentarian that leaves or is expelled from a party faction must sit as an independent candidate for six months before joining another faction. However, in April 2012, ruling party Fidesz approved new House rules which required that 12 MPs – rather than 10 as per previous rules – were needed to form a faction, thus blocking DK from forming a parliamentary group. Gyurcsány described this as "petty revenge on the part of the prime minister." Csaba Molnár said they might take the matter to the
Constitutional Court and European forums.
Cooperation negotiations of 2014 In September 2013, the MSZP declined to sign an election deal with DK and
Gábor Fodor's
Hungarian Liberal Party (MLP) because both parties presented excessive expectations in proportion to their electoral support.
Attila Mesterházy told a forum held at the party headquarters, broadcast by commercial news channel
ATV, that in order to win the next year's election, the MSZP need to win over uncertain voters. He added that the party board decided that running with Gyurcsány would keep uncertain voters away. Gyurcsány said the MSZP had instead proposed alliances of four rather than nine constituencies, all of which were impossible to win. In addition, they offered every 25th place on their party list and would have banned Gyurcsány himself from running either individually or on a list. Another request was that DK should not present a platform of its own. The party could not accept these conditions, the politician said. On 14 January 2014, centre-left opposition parties agreed to submit a joint list for the
spring 2014 general election. The list was headed by MSZP leader Attila Mesterházy, the centre-left alliance's candidate for Prime Minister. Mesterházy was followed by
Gordon Bajnai (
Together 2014) as second and Ferenc Gyurcsány as third. Liberal leader Gábor Fodor was entered at fourth place and co-leader of the E14-PM alliance and the
Dialogue for Hungary.
Tímea Szabó was entered at fifth place on the joint list of the MSZP, E2014-PM, DK, and Liberals. The Liberals also received two additional places (56th and 58th) on the list. The party eventually won 4 seats. In the
2014 European election, DK received 9.75% of the vote, and had two
MEPs returned. On 26 May 2014, Csaba Molnar announced that DK had applied to join the
Progressive Alliance of Socialists and Democrats.
Independent performance and united opposition The party ran alone in the 2018 parliamentary election, receiving 5.38% of votes and electing 9 candidates to the National Assembly. In the 2019 European election, DK did very well, scoring 16.08%, overtaking the MSZP and
Jobbik and becoming the leading opposition party. In
2019 local elections, the party had its best performance in
Tatabánya and in
Budapest, where 3 district mayorships were won. In 2020, two more mayorships in Budapest were added to DK after two mayors, elected as MSZP candidates, joined Democratic Coalition. After this DK became the second largest party in
General Assembly of Budapest (after
Fidesz–KDNP alliance) and the largest party in opposition's coalition, which is ruling in the Budapest. In late 2020, the party formed the
United for Hungary electoral coalition along with the
Momentum Movement, MSZP, Jobbik, Dialogue,
LMP – Hungary's Green Party, and the Liberals. In 2021, the party took part in
the coalition's primary. In this, it joined forces with the Liberals, running 2019 European Parliament election lead candidate
Klára Dobrev as candidate for prime minister. The DK
–Liberal ticket won a plurality in the first round of the election for the coalition's candidate for prime minister, with Dobrev placing first with 34.84% of votes and the parties' candidates being selected to run for 32 of the 106 single-member districts. Dobrev then proceeded to a runoff against independent candidate
Péter Márki-Zay, who was endorsed by withdrawn second-place Dialogue
–MSZP
–LMP candidate
Gergely Karácsony, Momentum, and the MSZP. Márki-Zay won the runoff with 56.71% of votes to Dobrev's 43.29%. In the parliamentary elections held on 12 April 2026, the DK failed to reach the 5% threshold required for parliamentary representation, and so lost all 15 seats it had held until then in the National Assembly. Dobrev announced her resignation as party leader, accepting responsibility for the electoral defeat. ==Political positions and international affiliation==