社会民主党人 The Social-Democrat ; The Social-Democrat; Социал-Демократ

民主党派 the democratic parties

社会民主党 social democratic party

德国社会民主党 the Social Democratic Party of Germany

德国社会民主党史 History of German Social-Democracy

党内民主 inner-Party democracy; democracy in the Party ; Intra-Party democracy

俄国社会民主工党 Russian Social-Democratic Labour Party

马克思主义政党 a Marxist political party

党员主体地位 the principal position of Party members

我国社会主义政党制度 the Chinese socialist system of political parties