贯彻“三个代表”重要思想,核心是坚持党的先进性;加强和改进党的建设,核心也是坚持党的先进性。党的先进性问题,历来是马克思主义政党建设的一个极其重要的问题,是党能不能存在和发展的根本依据,是党能否得到广大人民群众信任和拥护的根本条件。对于马克思主义执政党来说,党的 The key to implementing the important thinking of the ’Three Represents’ is to uphold the party’s advanced nature. To strengthen and improve party building, the core is also to uphold the advanced nature of the party. The issue of the advanced nature of the party has always been an extremely important issue for the construction of Marxist political parties, a fundamental basis for the existence and development of the party’s energy, and a fundamental condition for whether or not the party can gain the trust and support of the broad masses of the people. For the ruling party of Marxism, the party