The People's National Movement (PNM) is the longest-serving and oldest active political party in Trinidad and Tobago.

The party espouses the principles of liberalism[8][9][10][11][12] and generally sits at the centre[13][14][15] to centre-left[16][17] of the political spectrum.

These elections resulted in an 18–18 tie between the PNM and the UNC, and President Arthur N. R. Robinson appointed Manning as Prime Minister.

In the 2020 general election, they won the popular vote and a majority in the House of Representatives, winning 22 seats.

[27][28][20][21] The PNM's signature policies and legislative decisions include independence, writing the Constitution of Trinidad and Tobago, republicanism, the establishment of the Tobago House of Assembly, the Public Transport Service Corporation, the Water Taxi Service, universal preschool, primary and secondary education, universal health care, criminalizing child marriage and decriminalizing cannabis.

The party includes a semi-autonomous Tobagonian branch known as the Tobago Council of the People's National Movement.

With the collapse of the West Indian Federation, the PNM led Trinidad and Tobago to independence on 31 August 1962.

On 13 April, PNM Deputy Leader and Minister of External Affairs A. N. R. Robinson resigned from the party and government.

On 20 April, facing a revolt by a portion of the Army in collusion with the growing Black Power movement, Williams declared a State of Emergency.

Additionally, Williams split the post of Deputy Leader into three and appointed Kamaluddin Mohammed, Errol Mahabir and George Chambers to the position.

By 18 November 250 of 476 registered party groups had submitted nominations, 224 of them for Attorney General Karl Hudson-Phillips and 26 for Minister of Health, Kamaluddin Mohammed.

In March 1978, Hector McClean, Minister of Works, resigned from the party and government and declared himself an independent MP.

In the absence of a clear successor, President Ellis Clarke was left to choose the new Prime Minister from among the three Deputy Political Leaders of the party.

Clarke appointed George Chambers Prime Minister in preference to Kamaluddin Mohammed and Errol Mahabir.

It subsequently held on to power until 1986 when it was defeated by the National Alliance for Reconstruction (NAR) under the leadership of A. N. R. Robinson.

He appointed Wendell Mottley, Keith Rowley and Augustus Ramrekersingh as his deputy leaders.

Attempting to halt the decline in party support Manning called an early "snap election" in 1995 .

The PNM was further weakened when two MPs resigned from the party and threw their support behind the UNC government.

[47] In August 2020, the governing PNM won the following general election, leading to the incumbent Prime Minister Keith Rowley serving a second term.