Since its proclamation, the Constitution has been amended seven times, with four major amendments:
In July 1997, the Spanish compromise legalised selling of real estate to foreigners as part of the convergence with the European Union.
In July 2000, the proportional voting system was entered directly in constitution to avoid legal gap that threatened to happen after the National Assembly didn't approve the law about this issue according to somewhat unclear referendum results: three voting systems were proposed to people but none of them won the absolute majority of voters. In a disputed decision, the Constitutional Court of Slovenia ruled that if any law is to be passed, it is to be the law according to the option that got relative majority. In the political events that followed the time was running out and changing the constitution seemed like a good escape from status quo.
In March 2003, the constitutional amendment was passed that enabled for the transmission of certain legal powers to international organisations. This would allow Slovenia to enter the European Union and NATO if it be the will of the people. A referendum on such was held on 23 March 2003.
In June 2006, three articles of the constitution were amended to clarify the definition of Public Authority, to clarify transfer of state functions to municipal authorities, and to clarify how provinces are established and authorized to carry out state functions. as of December 2012[update], these have not been established yet.