The Can Lao Party played a key role in Diệm's regime. Initially, the party acted secretly based on a network of cells, and each member only knew the identities of a few other members. When necessary, the Party could assume the role of the government. After 1954, the existence of the party was recognized, but its activities were hidden from public view. In the early 1950s, Diệm and Nhu used the party to mobilize support for Diệm's political movements. According to the decree 116/BNV/CT of the Republic of Vietnam, the Can Lao Party was established on 2 September 1954. Personalism ("Vietnamese: Chủ nghĩa nhân vị") officially became the basic doctrine of Diệm's regime since the Constitution's preface declared that "Building Politics, Economy, Society, Culture for the people based on respecting Personalism".