After May 1968, Papon was elected as a member the French National Assembly and served several terms. From 1978 to 1981, he served in the cabinet of Prime Minister Raymond Barre under President Valéry Giscard d'Estaing. Between the two rounds of the May 1981 presidential election, where Giscard d'Estaing was running for a second term, details about Papon's past were leaked in "Le Canard enchaîné" newspaper. Documents signed by Papon were made public that showed his responsibility in the deportation of 1,690 Bordeaux Jews to Drancy internment camp from 1942–44. After a long investigation and protracted legal wranglings, he was eventually tried.