In 1985, Vaithilingam was elected become Public Works and Power Minister, which he served until 1990. From 1991 to 1996 he served as the Chief Minister of Pondicherry.
In 1985, Vaithilingam was elected for the position of Public Works and Power Minister, which he held until 1990. From 1991 to 1996, he served as the Chief Minister of Pondicherry.