The Romanian Communist Party (, , PCR) was a communist party in Romania. The successor to the pro-Bolshevik wing of the Socialist Party of Romania, it gave an ideological endorsement to a communist revolution that would replace the social system of the Kingdom of Romania. After being outlawed in 1924, the PCR remained a minor and illegal grouping for much of the interwar period and submitted to direct Comintern control. During the 1920s and the 1930s, most of its activists were imprisoned or took refuge in the Soviet Union, which led to the creation of competing factions that sometimes came into open conflict. That did not prevent the party from participating in the political life of the country through various front organizations, most notably the Peasant Workers' Bloc. During the mid-1930s, due to the purges against the Iron Guard, the party was on the road to achieving power, but the dictatorship of king Carol II crushed this. In 1934–1936, PCR reformed itself in the mainland of Romania properly, with foreign observers predicting a possible communist takeover in Romania. The party emerged as a powerful actor on the Romanian political scene in August 1944, when it became involved in the royal coup that toppled the pro-Nazi government of Ion Antonescu. With support from Soviet occupational forces, the PCR pressured King Michael I into abdicating, and it established the Romanian People's Republic in December 1947. The party operated under the title of the Romanian Workers' Party (Partidul Muncitoresc Romîn between 1948 and 1964 and Partidul Muncitoresc Român in 1964 and 1965) until it was officially renamed by Nicolae Ceaușescu, who had just been elected secretary general. Other legal, political parties existed in Romania, but their influence was limited and they were subordinate to the constitutionally-authorised leading role of the PCR. All other legal parties and entities were part of the Communist-dominated National Front. The PCR was a communist party, organized based on democratic centralism, a principle conceived by Russian Marxist theoretician Vladimir Lenin, which entails a democratic and open discussion on policy on the condition of unity in upholding the agreed-upon policies. The highest body within the PCR was the Party Congress, which began in 1969 to convene every five years. The Central Committee was the highest body when Congress was not in session. Because the Central Committee met only twice a year, most day-to-day duties and responsibilities were vested in Politburo.