Four referendums were held in Switzerland during 1949, the first two were held on 22 May on revising article 39 of which third and current federal constitution of Switzerland?
Swiss Federal Constitution The Federal Constitution of the Swiss Confederation (SR 10, German: "Bundesverfassung der Schweizerischen Eidgenossenschaft (BV)" , French: "Constitution fédérale de la Confédération suisse (Cst.)" , Italian: "Costituzione federale della Confederazione Svizzera (Cost.)" , Romansh: ' ) of 18 April 1999 (SR 101"') is the third and current federal constitution of Switzerland. It establishes the "Swiss Confederation" as a federal republic of 26 cantons (states). The document contains a catalogue of individual and popular rights (including the right to call for popular referenda on federal laws and constitutional amendments), delineates the responsibilities of the cantons and the Confederation and establishes the federal authorities of government.
Niuean constitutional referendum, 1992 A constitutional referendum was held in Niue on 13 June 1992. The proposed amendments to the constitution were the first since the country's original constitution was approved in a 1974 referendum. The changes were approved by a large majority of voters.