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.
Swiss referendums, 1962 Four referendums were held in Switzerland in 1962. The first was held on 1 April on a popular initiative to ban nuclear weapons, and was rejected by 65% of voters. The second and third were held on 27 May on an amendment to the constitution regarding nature conservation and a federal law amending pay at the federal level. The constitutional amendment was approved, but the law on pay was rejected. The final referendum was held on 4 November on another constitutional amendment on the method of election of the National Council, and was approved by voters.