The paper grew steadily, and La Razón was expropriated in 1947 by order of President Juan Perón, whose populist leadership had become increasingly autocratic.

Controlled by influential First Lady Eva Perón, the paper displaced longtime circulation leader La Nación by 1952, when its daily distribution reached 500,000 copies (Latin America's largest).

The dictatorship that displaced Perón in 1955 initially resolved to retain the lucrative daily, but were challenged in court by the Peralta Ramos family; the legal case presented by their attorney, Marcos Satanowsky, made La Razón one of the few such publications returned to its rightful owners, as many were reportedly resold by the regime to pliant buyers.

Editor-in-chief Félix Laiño retired in 1984, and was replaced by former La Opinión publisher Jacobo Timerman, who had returned from exile in Israel, to where he fled after his abduction and torture by the last dictatorship, in 1977-79.

The insolvent publication was converted into a free-distribution evening daily in tabloid format, and can be found most commonly in train and subway stations, as well in as coffee shops in Buenos Aires.