The United Sabah Party (, abbreviated PBS) is a political party of Sabah. The PBS was founded by Joseph Pairin Kitingan in 1985 and it is Sabah's oldest local party. In August 2020, PBS confirmed that they would be using their own logo and flag until Sabah's local coalition is established under Registrar of Societies (RoS). In 2022, Gabungan Rakyat Sabah (GRS) is the only Sabah's local coalition that has been successfully registered under the Registrar of Societies (RoS) making PBS interested in using the coalition's logo and becoming part of the coalition's component. Since 2022, the PBS acts as an allied partner, providing confidence and supply to the ruling federal Pakatan Harapan (PH) coalition. It is a major component of the Sabah-based Gabungan Rakyat Sabah (GRS) state governing alliance. History PBS was registered as a political party on 5 March 1985. Its founding President is Joseph Pairin Kitingan who had broken away from the ruling Parti Bersatu Rakyat Jelata Sabah (BERJAYA) because of his differences with the Chief Minister of Sabah and party president, Harris Salleh in whose state cabinet Pairin served before the break-up. BERJAYA itself had ousted the previous state government of United Sabah National Organisation (USNO) to govern Sabah for 8 years from 1976 to 1985. PBS later formed the state government after winning the May 1985 state elections. Following the 1986 Sabah riots after winning the 1986 state election, PBS joined the Barisan Nasional (BN) coalition and governed Sabah from 1985 to 1994. However, on the eve of the July 1990 state elections, PBS pulled out of the BN to join the Gagasan Rakyat (GR) coalition and won the state election for a third time. It also won the 1994 state elections by a narrow margin. However, numerous defections occurred as many PBS representatives switched allegiance to the then opposition BN coalition before PBS was even able to form a new state government. PBS subsequently rejoined the BN coalition in 2002, ending any form of opposition as BN fully occupied the state legislature and returning Sabah to the rule of the BN coalition that also holds the federal parliament. Following the fall of both federal and state BN governments in the 2018 general election (GE14), PBS left the coalition and formed a new Sabah-based informal coalition of parties known as the United Alliance (Sabah) or Gabungan Bersatu (Sabah) and also the succeeding United Sabah Alliance