High Quality Content by WIKIPEDIA articles! The Croatian Democratic Union (Croatian: Hrvatska demokratska zajednica, HDZ) is a Christian democratic and conservative political party and the main center-right political party in Croatia. It is one of the two major contemporary political parties in Croatia, along with the centre-left Social Democratic Party (SDP). It is currently the second-largest party in the Croatian Parliament with 44 seats. The Christian democratic HDZ governed Croatia from 1990 to 2000 and, in coalition, from 2003 to 2011. The party is an associate member of the European People`s Party (EPP).