Fourth Republic
Marcos officially lifted martial law on January 17, 1981. However, he retained much of the government's power for arrest and detention. Corruption and nepotism as well as civil unrest contributed to a serious decline in economic growth and development under Marcos, whose own health faced obstacles due to lupus. The political opposition decided to boycotted the 1981 presidential elections, which pitted Marcos against retired general Alejo Santos, in protest over his control over the results.[151] Marcos won by a margin of over 16 million votes, which constitutionally allowed him to have another six-year term. Finance Minister Cesar Virata was evetually appointed to succeed Marcos as Prime Minister.
In 1983, opposition leader Benigno Aquino, Jr. was assassinated at the Manila International Airport upon his return to the Philippines after a long period of exile. This coalesced popular dissatisfaction with Marcos and began a succession of events, including pressure from the United States, that culminated in a snap presidential election in February 1986. The opposition united under Aquino's widow, Corazon Aquino. The official election canvasser, the Commission on Elections (Comelec), declared Marcos the winner of the election. However, there was a large discrepancy between the Comelec results and that of Namfrel, an accredited poll watcher. The allegedly fraudulent result was rejected by Corazon Aquino and her supporters. International observers, including a U.S. delegation, denounced the official results. General Fidel Ramos and Defense Minister Juan Ponce Enrile withdrew their support for Marcos. A peaceful civilian-military uprising, now popularly called the People Power Revolution, forced Marcos into exile and installed Corazon Aquino as president on February 25, 1986.