He represented the Independent Republicans (from 1962 to 1978) and the Union for French Democracy (from 1978 to 1981) in the National Assembly.
He remained in this position until 14 March 1977, when Socialist Party candidate Jacques Auxiette became mayor.
[citation needed] In 1967, he was elected to Vendée at the expense of incumbent Lionel de Tinguy du Pouët.
[citation needed] His brother, Martial Caillaud, was mayor of L'Herbergement from 1965 to 1987 and general counsel of canton de Rocheservière of 1973 to 1987.
[citation needed] His nephew Dominique Caillaud, son of the former, was mayor of Saint-Florent-des-Bois of 1977 to 2008, General Council of Vendée from 1988 to 2001, and a member of the second district of Vendee from 1997 to 2012.