Croatia’s incumbent President Zoran Milanovic won most of the votes in the first round of a presidential election on Sunday, but must face a runoff against a ruling party candidate to secure another five-year term.

Opposition Social Democrats’ candidate on track to win second term in office, according to preliminary results.

During his fis first term Milanović has clashed with Prime Minister Andrej Plenković over foreign and public policy and has fiercely criticised the EU and NATO over their support for Ukraine.