A referendum on joining the European Union was held in Slovakia on 16 and 17 May 2003.Nohlen, D & Stöver, P (2010) Elections in Europe: A data handbook, p1747 It was approved by 93.7% of those voting, and Slovakia subsequently joined the EU on 1 May 2004. As of July 4th, 2026, it remains the only referendum in the country's history to have not failed due to insufficient voter turnout.
Results
References