The Act of 27th June 1997 on Political Parties has its own characteristics. While the rules for the financing of these entities are regulated in detail, however, other issues are regulated relatively general in that Act. The a author draws attention to the problems that arise in this context. One of that problems is the lack of well-defined boundaries between political parties and associations, which is particularly evident in relation to groups of local character. Besides, it is also worth emphasizing that participation in elections is not, in the light of Polish law, the determinant, which could constitute such a distinction. No need for removal from the register of political parties, which are permanently not participate in the procedures for the election is the best proof. In addition, an important issue is also the inability to associate in political parties people who do not have Polish citizenship. It is extremely important in the context of electoral rights of the people, who are the EU citizens and who are living in the territory of the Republic of Poland.