"What does it mean when we say that Party centralism is centralism based on democracy? It means that the leading bodies of the Party are elected by the membership on a democratic basis and enjoy their confidence. It means that the resolutions and policies of the Party are the crystallization of the ideas of the rank and file as expressed on a democratic basis, that they are decided on by the rank and file as expressed on a democratic basis, that they are decided upon by the rank and file or its representatives and that they are then adhered to and carried out by the leadership in conjunction with the rank and file."
January 1, 1970
https://en.wikiquote.org/wiki/Liu_Shaoqi