Lawyer Arturo Frondizi, 49, leader of the left-wing faction of the sprawling, middle-of-the-road Radical Party, won Argentina's presidential election this week after the first truly free campaign the country had known in 30 years. With a growing five-to-three margin in the key districts, he apparently handed his opponent, moderate Radical Ricardo Balbin, a decisive licking.
For his victory, Frondizi owed a potentially embarrassing debt to ousted Dictator Juan Perón. In constituent assembly elections last July, Perón ordered his last-ditch followers to vote blank, and they piled up 2,000,000 void ballots. Two weeks ago Perón, now an exile in the Dominican...