Once the new constitution was adopted, elections were set for 1953. The PPP's coalition of lower-class Afro-Guyanese and rural Indo-Guyanese workers, together with elements of both ethnic groups' middle sectors, made for a formidable constituency. Conservatives branded the PPP as communist, but the party campaigned on a center-left platform and appealed to a growing nationalism. The other major party participating in the election, the National Democratic Party (NDP), was a spin-off of the League of Coloured People and was largely an Afro-Guyanese middle-class organization, sprinkled with middle-class Portuguese and IndoGuyanese . The NDP, together with the poorly organized United Farmers and Workers Party and the United National Party, was soundly defeated by the PPP. Final results gave the PPP eighteen of twenty-four seats compared with the NDP's two seats and four seats for independents.

The PPP's first administration was brief. The legislature opened on May 30, 1953. Already suspicious of Jagan and the PPP's radicalism, conservative forces in the business community were further distressed by the new administration's program of expanding the role of the state in the economy and society. The PPP also sought to implement its reform program at a rapid pace, which brought the party into confrontation with the governor and with high-ranking civil servants who preferred more gradual change. The issue of civil service appointments also threatened the PPP, in this case from within. Following the 1953 victory, these appointments became an issue between the predominantly Indo-Guyanese supporters of Jagan and the largely Afro-Guyanese backers of Burnham. Burnham threatened to split the party if he were not made sole leader of the PPP. A compromise was reached by which members of what had become Burnham's faction received ministerial appointments.

The PPP's introduction of the Labour Relations Act provoked a confrontation with the British. This law ostensibly was aimed at reducing intraunion rivalries, but would have favored the GIWU, which was closely aligned with the ruling party. The opposition charged that the PPP was seeking to gain control over the colony's economic and social life and was moving to stifle the opposition. The day the act was introduced to the legislature, the GIWU went on strike in support of the proposed law. The British government interpreted this intermingling of party politics and labor unionism as a direct challenge to the constitution and the authority of the governor. The day after the act was passed, on October 9, 1953, London suspended the colony's constitution and, under pretext of quelling disturbances, sent in troops.

Data as of January 1992