Barisan Nasional, the coalition that had governed Malaysia since the country's independence in 1957, suffer an historic defeat in the 2018 Malaysian general election.

Barisan Nasional is a political coalition in Malaysia. It was founded in 1974 as a coalition of centre-right and right-wing ethnic political parties to succeed the Alliance Party, and had first competed in the general election that year. It is currently the third largest political coalition with 30 seats in the Dewan Rakyat, the lower house of the Parliament of Malaysia, after Pakatan Harapan (PH) with 82 seats and Perikatan Nasional (PN) with 74 seats. The coalition is dominated by the United Malays National Organisation (UMNO), the Malaysian Chinese Association (MCA) and the Malaysian Indian Congress (MIC), as well as more minor parties such as the United Sabah People's Party (PBRS) and the People's Progressive Party (PPP), the latter of which has no representation in the Dewan Rakyat.