In order to promote industrialization and improve the living standards of the population in the Sub-Current article is dedicated to lobbying development in post-socialist EU member states from Central andEastern Europe. This is an important and at the same time insufficiently studied aspect of political systems in CEE. Models of lobbying inSloveniaandPolandthat are analyzed in the article, demonstrate that there is no single vector of lobbying development in postsocialist countries. It is shown that interaction between interest groups and decision makers is influenced by following factors: dynamics and state of interest group systems, mechanism of interaction between interest groups and decision makers, Europeanization of politics, and part...