As of February 26, over 50.4 million Chinese have renounced their affiliations with Chinese Communist Party at a web site of Epoch Times. Since the November 2004 release of an editorial series Nine Commentaries on the Communist Party by The Epoch Times, Quit the Party has become the biggest push ever for freedom in China. There have been numerous news reports that the Beijing authorities have arrested, tortured and killed people for distributing and possession of the editorial series. According to Epoch Times, these withdrawals run deep into the heart of the Party as its upper echelon including diplomats, general Party secretaries and other high-ranking officials are among those who publicly sever their ties with the Party.
Source: Epoch Times
http://tuidang.epochtimes.com/
http://www.theepochtimes.com/n2/t/quitting-the-chinese-communist-party/