Vice President Isabel Perón assumes powers and duties as Acting President of Argentina, while her husband President Juan Perón is terminally ill.

Isabel Martínez de Perón is an Argentine politician who served as the 41st president of Argentina from 1974 to 1976. She was one of the first female republican heads of state in the world, and the first woman to serve as president of a country. Perón was the third wife of President Juan Perón. During her husband's third term as president from 1973 to 1974, she served as both the 29th vice president and first lady of Argentina. From 1974 until her resignation in 1985, she was also the second President of the Justicialist Party. Isabel Perón's politics exemplify right-wing Peronism and Orthodox Peronism. Ideologically, she was considered close to corporate neo-fascism.

The president of Argentina, officially known as the president of the Argentine Nation, is both head of state and head of government of Argentina. Under the national constitution, the president is also the chief executive of the federal government and commander-in-chief of the armed forces.

Juan Domingo Perón was an Argentine military officer and statesman who served as the 29th president of Argentina from 1946 to his overthrow in 1955 and again as the 40th president from 1973 to his death in 1974. He is the only Argentine president elected three times and holds the highest percentage of votes in clean elections with universal suffrage. Perón is arguably the most important and controversial Argentine politician of the 20th century and his influence extends to the present day. Perón's ideas, policies and movement are known as Peronism, which continues to be one of the major forces in Argentine politics.