The purpose of this article is to present a comparative analysis of data concerning to the addictional questionnaire of political participation PNAD. 1988, Brazilian Household Survey of 1988 and PME, Brazilian Monthly Research Employment of April, 1996, from IBGE (Brasilian Institute of Geography and Statistics). Data analysis concerning logistic regression models, with dependent variables related to memberships in some kinds of political participation with socioeconomic variables as independent ones, was used to test two hypothesis: 1) the decline of level of education as a predictor variable of political participation (asking, complaining, claiming and demanding to politicians) and belonging to neighborhood; philanthropic and religious. Cultural and sports associations), between 1988 and 1996 in six metropolitan areas of Brazil, and 2) the weak power of socioeconomic models as predictor of political participation.