The Communist Party of Denmark (, DKP) is a communist party in Denmark. The DKP was founded on 9 November 1919 as the Left-Socialist Party of Denmark (, VSP), through a merger of the Socialist Youth League and Socialist Labour Party of Denmark, both of which had broken away from the Social Democrats in March 1918. The party adopted its present name in November 1920, when it joined the Comintern. The DKP was last represented in the Danish parliament () in 1979. In 1989, on the initiative of the Left Socialists (VS), the DKP and the Socialist Workers Party (SAP) jointly launched a new socialist political party named the Red-Green Alliance (). History Background and establishment Marie-Sophie Nielsen led the faction of Social Democrats that broke away in 1918 and founded the Socialist Labour Party of Denmark, due to an accumulation of conflicts with the reformist leadership of the Social Democrats. In particular, they opposed cooperation with the Radical Liberal Party, with whom the Social Democrats allied themselves in general elections. The Socialist Labour Party of Denmark began laying the foundations for a new party in March 1918, soon after its establishment. In 1919, the party cooperated with the syndicalist movement, primarily organized within the Trade Union Opposition Coalition (, FS) and the Socialist Youth League, a left-wing group that broke away from the Social Democratic Youth (the youth wing of the Social Democrats), to establish the Left-Socialist Party of Denmark on 9 November 1919. The party participated in the 2nd Comintern Congress in 1920. The party approved the admission requirements, changed its name to the Communist Party of Denmark, and joined the Comintern the same year. This, however, led to a split within the party, with the FS-led syndicalist faction withdrawing from the party. Following a rapprochement between the two groups, and with the support of the Soviet Union, the DKP and FS formed a joint federation in 1921, known as the Communist Federation (). However, the cooperation was short lived; the federation split in 1922 following an attempted coup of the party's leadership, and for the next 18 months Denmark would have two parties calling themselves the Communist Party of Denmark, although only one was recognized by the Comintern. The two parties were successfully merged once more in 1923, but inter-factional conflicts would continue for another 20 years. For the initial period following the party's reunification, the DKP's