While some scholars speak about the apathy of young people to conventional forms of political participation, other speak that we need analysis young people with a deductive framework. Despite many young people come to participate in politics as a member of youth wings of one political party, in an active involvement. This paper seeks to better understand younger Spaniard’s attitudes towards an active participation in democratic processes opposite the lack of enthusiasm for politics amongst youth. Better understanding the differences between those young engaged in parties and those who do not, we will have a fuller understanding of how parties may, or may not, be able to reform themselves to become generally more attractive to this cohort of engaged young citizens. Scholars have been tested some different models of why people became active inside a political parties. Each model has been influenced by a different political science research tradition: civic voluntarism, rational choice, social psychological, incentives, mobilization, social capital, cognitive, etc. This research tries to understand what models explain better the political engagement parties in parties of young Spaniards