 The same year, Antun Vujić joined the Social Democratic Party and his party of the Social Democrats of Croatia merged with them.The Social Democratic Party supported Stjepan Mesić and Josip Manolić in 1994 when they tried to split a number of parliamentary members from the Croatian Democratic Union in order to spark new elections.They were fierce opponents of the Croatian aggression in Bosnia and Herzegovina which was organised by Franjo Tuđman and Gojko Šušak.