The new head of State, Pedro Eugenio Aramburu, proscribed Peronism and banned the party from any future elections. Arturo Frondizi from the UCR won the 1958 general election. He encouraged investment to achieve energetic and industrial self-sufficiency, reversed a chronic trade deficit and lifted the ban on Peronism; yet his efforts to stay on good terms with both the Peronists and the military earned him the rejection of both and a new coup forced him out. Amidst the political turmoil, Senate leader José María Guido reacted swiftly and applied anti-power vacuum legislation, ascending to the presidency himself; elections were repealed and Peronism was prohibited once again. Arturo Illia was elected in 1963 and led an increase in prosperity across the board; however he was overthrown in 1966 by another military coup d'état led by General Juan Carlos Onganía in the self-proclaimed Argentine Revolution, creating a new military government that sought to rule indefinitely.