General elections were held in the Belgian Congo on 22 May 1960, in order to create a government to rule the country following independence as the Republic of the Congo (Congo-Léopoldville), scheduled for 30 June. The 137-seat Chamber of Deputies was elected by men over the age of 21. The seats were filled by district-based lists,DRC: 1960 National Assembly results EISA although only two parties, the Mouvement National Congolais-Lumumba (MNC-L) and the Parti National du Progrès, submitted lists in more than one district.

The MNC-L, led by Patrice Lumumba, won the most seats and Lumumba was confirmed as prime minister by Parliament after forming a coalition that included the Parti Solidaire Africain, Centre de Regroupment Africain and other parties. Voter turnout was 82%.Dieter Nohlen, Michael Krennerich & Bernhard Thibaut (1999) Elections in Africa: A data handbook, p291

Following the election, an 84-seat Senate was elected by Provincial Assembly members, and the two chambers elected Joseph Kasa-Vubu of ABAKO as president after some days of turmoil.

Background Belgian rule of the Congo

Colonial rule in the Congo began in the late 19th century. King Leopold II of Belgium, frustrated by Belgium's lack of international power and prestige, attempted to persuade the Belgian government to support colonial expansion around the largely unexplored Congo Basin. The Belgian government's ambivalence about the idea led Leopold to eventually create a state on his own account, achieving international recognition for the Congo Free State in 1885. By the turn of the century, however, the violence of Free State officials against indigenous Congolese and the ruthless system of economic extraction had led to intense diplomatic pressure on Belgium to take official control of the country, which it did in 1908, creating the Belgian Congo. The colony was divided into six provinces: Léopoldville, Équateur, Orientale, Kivu, Kasaï, and Katanga. The city of Léopoldville was designated as the capital in 1923.

Belgian rule in the Congo was based around the "colonial trinity" (trinité coloniale) of state, missionary and private company interests. The privileging of Belgian commercial interests meant that capital sometimes flowed back into the Congo and that individual regions became specialised. The country was split into nesting, hierarchically organised administrative subdivisions, and run uniformly according to a set "native policy" (politique indigène). As early as the 1920s, the Congo possessed one of the densest colonial regimes in Africa. The administration was heavily involved in the life of the Congolese; Belgian functionaries (government civil servants) closely monitored and enforced agricultural production, provided medical services to many residents, and frequently toured even the most rural territories to oversee their subjects. There was also a high degree of racial segregation between the native and white populations, the latter of which grew considerably after the end of World War II due to immigration from Europe.

Rise in Congolese political activity

During the latter stages of World War II a new social stratum emerged in the Congo, known as the évolués. Forming an African middle class in the colony, they held skilled positions (such as clerks and nurses) made available by the economic boom. While there were no universal criteria for determining évolué status, it was generally accepted that one would have "a good knowledge of French, adhere to Christianity, and have some form of post-primary education." Early on in their history, most évolués sought to use their unique status to earn special privileges in the Congo. Since opportunities for upward mobility through the colonial structure were limited, the évolué class institutionally manifested itself in elite clubs through which they could enjoy trivial privileges that made them feel distinct from the Congolese "masses". Additional groups, such as labour unions, alumni associations, and ethnic syndicates, provided other Congolese the means of organisation. Among the most important of these was the Alliance des Bakongo (ABAKO), representing the Kongo people of the Lower Congo. However, they were restricted in their actions by the administration. While white settlers were consulted in the appointment of certain officials, the Congolese had no means of expressing their beliefs through the governing structures. Though native chiefs held legal authority in some jurisdictions, in practice they were used by the administration to further its own policies.

Up into the 1950s most évolués were concerned only with social inequalities and their treatment by the Belgians. Questions of self-government were not considered until 1954, when ABAKO requested that the administration consider a list of suggested candidates for a Léopoldville municipal post. That year the association was taken over by Joseph Kasa-Vubu, and under his leadership it became increasingly hostile to the colonial authority and sought autonomy for the Kongo regions in the Lower Congo. In 1956 a group of Congolese intellectuals under the tutelage of several European academics issued a manifesto calling for a transition to independence over the course of 30 years. The ABAKO quickly responded with a demand for "immediate independence". The Belgian government was not prepared to grant the Congo independence and even when it started realising the necessity of a plan for decolonisation in 1957, it was assumed that such a process would be solidly controlled by Belgium. In December 1957 the colonial administration instituted reforms that permitted municipal elections and the formation of political parties. Some Belgian parties attempted to establish branches in the colony, but these were largely ignored by the population in favour of Congolese-initiated groups. Nationalism fermented in 1958 as more évolués began interacting with others outside of their own locales and started discussing the future structures of a post-colonial Congolese state. Nevertheless, most political mobilisation occurred along tribal and regional divisions. In Katanga, various tribal groups came together to form the Confédération des associations tribales du Katanga (CONAKAT) under the leadership of Godefroid Munongo and Moïse Tshombe. Hostile to immigrant peoples, it advocated provincial autonomy and close ties with Belgium. Most of its support was rooted in individual chiefs, businessmen, and European settlers of southern Katanga. It was opposed by Jason Sendwe's Association Générale des Baluba du Katanga (BALUBAKAT).

In October 1958 a group of Léopoldville évolués including Patrice Lumumba, Cyrille Adoula and Joseph Iléo established the Mouvement National Congolais (MNC). Diverse in membership, the party sought to peacefully achieve Congolese independence, promote the political education of the populace, and eliminate regionalism. The MNC drew most of its membership from the residents of the eastern city of Stanleyville, where Lumumba was well known, and from the population of the Kasai Province, where efforts were directed by a Muluba businessman, Albert Kalonji. Belgian officials appreciated its moderate and anti-separatist stance and allowed Lumumba to attend the All-African Peoples' Conference in Accra, Ghana, in December 1958 (Kasa-Vubu was informed that the documents necessary for his travel to the event were not in order and was not permitted to go). Lumumba was deeply impressed by the Pan-Africanist ideals of Ghanaian president Kwame Nkrumah and returned to the Congo with a more radical party programme. He reported on his trip during a widely attended rally in Léopoldville and demanded the country's "genuine" independence.

Fearing that they were being overshadowed by Lumumba and the MNC, Kasa-Vubu and the ABAKO leadership announced that they would be hosting their own rally in the capital on 4 January 1959. The municipal government (under Belgian domination) was given short notice, and communicated that only a "private meeting" would be authorised. On the scheduled day of the rally the ABAKO leadership told the crowd that had gathered that the event was postponed and that they should disperse. The mass was infuriated and instead began hurling stones at the police and pillaging European property, initiating three days of violent and destructive riots. The Force Publique, the colonial army, was called into service and suppressed the revolt with considerable brutality. In wake of the riots Kasa-Vubu and his lieutenants were arrested. Unlike earlier expressions of discontent, the grievances were conveyed primarily by uneducated urban residents, not évolués. Popular opinion in Belgium was one of extreme shock and surprise. An investigative commission found the riots to be the culmination of racial discrimination, overcrowding, unemployment, and wishes for more political self-determination. On 13 January the administration announced several reforms, and the Belgian King, Baudouin, declared that independence would be granted to the Congo in the future.

Meanwhile, discontent surfaced among the MNC leadership, who were bothered by Lumumba's domination over the party's politics. Relations between Lumumba and Kalonji also grew tense, as the former was upset with how the latter was transforming the Kasai branch into an exclusively Luba group and antagonising other tribes. This culminated into the split of the party into the MNC-Lumumba/MNC-L under Lumumba and the MNC-Kalonji/MNC-K under Kalonji and Iléo. The latter began advocating federalism. Adoula left the organisation. Alone to lead his own faction and facing competition from ABAKO, Lumumba became increasingly strident in his demands for independence. Following an October riot in Stanleyville he was arrested. Nevertheless, the influence of himself and the MNC-L continued to grow rapidly. The party advocated for a strong unitary state, nationalism, and the termination of Belgian rule and began forming alliances with regional groups, such as the Kivu-based Centre du Regroupement Africain (CEREA). Though the Belgians supported a unitary system over the federal models suggested by ABAKO and CONAKAT, they and more moderate Congolese were unnerved by Lumumba's increasingly extremist attitudes. With the implicit support of the colonial administration, the moderates formed the Parti National du Progrès (PNP) under the leadership of Paul Bolya and Albert Delvaux. It advocated centralisation, respect for traditional elements, and close ties with Belgium. In southern Léopoldville Province, a socialist-federalist party, the Parti Solidaire Africain (PSA) was founded. Antoine Gizenga served as its president, and Cléophas Kamitatu was in charge of the Léopoldville Province chapter.

The Belgo-Congolese Round Table Conference

After the riots of 4 January 1959 Belgian leaders became increasingly fearful of a violent political conflict emerging in the Congo. The security situation in the country deteriorated over the course of the year, especially in the Lower Congo and in Kasai, where violent clashes between Baluba and Lulua were taking place. Fearing the degeneration of the unrest into a colonial war and facing intense pressure for reform, in late 1959 the Belgian government announced that it would host a round table conference in Brussels in 1960 with the Congolese leadership to discuss the political future of the country.