The People's Action Party (PAP) is a major conservative political party in Singapore and is the contemporary governing political party represented in the Parliament of Singapore, followed by the opposition Workers' Party (WP).
The PAP was established in 1954 as a conventional centre-left party. Following its initial electoral success in 1959, Prime Minister Lee Kuan Yew sought to reposition the party ideologically toward the centre. In pursuit of this objective, he expelled the party's leftist faction, which reorganised as Barisan Sosialis, in 1961, during the period of Singapore's merger with Malaysia. Over the course of the 1960s and since then, the PAP continued its ideological shift towards the centre-right. After Singapore's separation from Malaysia and subsequent independence in 1965, the majority of opposition parties, excluding the WP, boycotted the 1968 general election. Consequently, the PAP secured all parliamentary seats in that election. In the ensuing decades, the PAP consolidated its political dominance through successive electoral victories. It consistently formed the executive branch of government and exerted substantial influence over key national institutions, including the country's sole trade union, the National Trades Union Congress (NTUC), which is affiliated with the party, as well as the civil service.
Between 1965 and 1981, the PAP was the sole political party represented in Parliament. This period of exclusive representation ended with the party's first electoral defeat in a 1981 by-election in the Anson Constituency, where the WP secured the seat. Despite this setback, the PAP has retained its political dominance. In every subsequent general election, the party consistently garnered over 60 percent of the popular vote and secured more than 80 percent of parliamentary seats, achieving landslide victories on each occasion. Having governed continuously for 67 years, the PAP remains the dominant political force in Singapore, effectively operating within the framework of a de facto one-party state. It has maintained an unbroken two-thirds parliamentary supermajority enabling it to amend the Constitution at will. As of 2025, the PAP is the longest-serving uninterrupted ruling party among contemporary multi-party parliamentary democracies and holds the second-longest tenure of any governing party in a multi-party system in modern history, surpassed solely by Mexico's Institutional Revolutionary Party (PRI), which governed from 1929 to 2000.
Positioned on the centre-right of Singapore's political spectrum, the PAP espouses a combination of social conservatism and economic liberalism. The party generally advocates free-market principles, favouring policies such as low taxation, the absence of tariffs, limited government expenditure relative to gross domestic product (GDP), minimal economic regulation and the promotion of economic freedom. Nonetheless, the PAP occasionally engages in strategic state intervention, reflecting elements of welfarism. A distinctive feature of its economic approach is the support for the development and expansion of state-owned enterprises (SOEs), locally referred to as government-linked corporations (GLCs). These entities were initially established in response to the economic disruptions caused by the British military withdrawal from Singapore in 1971. GLCs played a central role in driving export-oriented industrialisation, fostering economic development and generating employment across key sectors of the economy. On social matters, the PAP endorses communitarian values and civic nationalism. A cornerstone of its social policy is the promotion of national cohesion through the integration of the country's major ethnic groups into a unified Singaporean identity.
Lee Kuan Yew, Toh Chin Chye and Goh Keng Swee were involved in the Malayan Forum, a London-based student activist group that was against colonial rule in Malaya in the 1940s and early 1950s. Upon returning to Singapore, the group met regularly to discuss approaches to attain independence in Malayan territories and started looking for like-minded individuals to start a political party. Journalist S. Rajaratnam was introduced to Lee by Goh. Lee was also introduced to several English-educated left-wing students and Chinese-educated union and student leaders while working on the Fajar sedition trial and the National Service riot case.
The PAP was officially registered as a political party on 21 November 1954. Members of the first Central Executive Committee (CEC) of the party include a group of trade unionists, lawyers and journalists such as Lee Kuan Yew, Abdul Samad Ismail, Toh Chin Chye, Devan Nair, S. Rajaratnam, Chan Chiaw Thor, Fong Swee Suan, Tann Wee Keng and Tann Wee Tiong. The political party was led by Lee Kuan Yew as its secretary-general, with Toh Chin Chye as its founding chairman. Other party officers include Tann Wee Tiong, Lee Gek Seng, Ong Eng Guan and Tann Wee Keng.
The PAP first contested the 1955 general election in which 25 of 32 seats in the legislature were up for election. In this election, the PAP's four candidates gained much support from the trade union members and student groups such as the University Socialist Club, who canvassed for them. The party won three seats, one by its leader Lee Kuan Yew for the Tanjong Pagar division and one by PAP co-founder Lim Chin Siong for the Bukit Timah division. Then 22 years old, Lim was the youngest Assemblyman ever to be elected to office. The election was won by the Labour Front headed by David Marshall.
In April 1956, Lim and Lee represented the PAP at the London Constitutional Talks along with Chief Minister David Marshall which ended in failure as the British declined to grant Singapore internal self-government. On 7 June 1956, Marshall, disappointed with the constitutional talks, stepped down as Chief Minister as he had pledged to do so earlier if self-governance was not achieved. He was replaced by Lim Yew Hock, another Labour Front member. Lim pursued a largely anti-communist campaign and managed to convince the British to make a definite plan for self-government. The Constitution of Singapore was revised accordingly in 1958, replacing the Rendel Constitution with one that granted Singapore self-government and the ability for its own population to fully elect its Legislative Assembly.
PAP and left-wing members who were communists were criticised for inciting riots in the mid-1950s. Lim Chin Siong, Fong Swee Suan and Devan Nair as well as several unionists were detained by the police after the Chinese middle schools riots. Lim Chin Siong was placed under solitary confinement for close to a year, away from his other PAP colleagues, as they were placed in the Medium Security Prison (MSP) instead. The number of PAP members imprisoned rose in August 1957, when PAP members from the trade unions (viewed as "communist or pro-communist") won half the seats in the Central Executive Committee (CEC). The "moderate" CEC members, including Lee Kuan Yew, Toh Chin Chye and others, refused to take their appointments in the CEC. Yew Hock's government again made a sweeping round of arrests, imprisoning all the "communist" members, before the "moderates" re-assumed their office.
Following this, the PAP decided to re-assert ties with the labour faction of Singapore in the hope of securing the votes of working-class Chinese Singaporeans, many of whom were supporters of the jailed unionists. Lee Kuan Yew convinced the incarcerated union leaders to sign documents to state their support for the party and its policies, promising to release the jailed members of the PAP when the party came to power in the next elections. Ex-Barisan Sosialis member Tan Jing Quee claims that Lee was secretly in collusion with the British to stop Lim Chin Siong and the labour supporters from attaining power because of their huge popularity. Quee also states that Lim Yew Hock deliberately provoked the students into rioting and then had the labour leaders arrested. Greg Poulgrain of Griffiths University argued that "Lee Kuan Yew was secretly a party with Lim Yew Hock in urging the Colonial Secretary to impose the subversives ban in making it illegal for former political detainees to stand for election". Lee Kuan Yew eventually accused Lim Chin Siong and his supporters of being communists working for the Communist United Front, but evidence of Lim being a communist cadre was a matter of debate as many documents have yet to be declassified.