Legislation concerning the financing of political parties and political campaigns in Republic of Croatia dates back to the first democratic elections in 1990. Constitution of the Republic of Croatia prescribes that political parties are required to publicly announce the sources of their assets and property. A comparative analysis of statutes of political parties represented in the Croatian Parliament reveals various practices of electing treasurers, varying from the competency of either the executive or representative bodies within the parties at both central and local levels. The parties of liberal orientation are members of the global federation called Liberal International. Social Democratic Party (SDP) has had considerable technical and advisory support by the German SPD and the British Labour Party. AES stipulates the parties right to the budgetary compensation of costs for the national elections. The participation of citizens in the political process should be supported, thus also in the supervision of political party financing and expenditures in political campaigns.