A referendum on schools was held in Switzerland on 15 March 1903. Voters were asked whether they approved of a federal resolution on the federal government providing financial support for public elementary schools. It was approved by 76.3% of voters and a majority of cantons.
A referendum on copyright was held in Switzerland on 19 March 1905. Voters were asked whether they approved of a federal resolution on revising article 64 of the constitution, defining the protection rights of inventors. It was approved by 70.4% of voters and a majority of cantons.
A referendum on the electoral system was held in Switzerland on 23 October 1910. Voters were asked whether they approved of introducing proportional representation for National Council elections. Although the proposal was approved by a majority of cantons, it was rejected by 52.5% of voters. This was the second such referendum, after the one in 1900 also failed. However, a third referendum on the same issue was held in 1918, and passed with 66.8% in favour.
A referendum on disease control was held in Switzerland on 4 May 1913. Voters were asked whether they approved of amending two articles of the constitution, 31 II, lit d and 69, which covered the control of human and animal diseases. It was approved by a majority of voters and cantons.
A referendum on a war tax was held in Switzerland on 6 June 1915. Voters were asked whether they approved of amending the constitution to introduce a one-off war tax during the First World War, which Switzerland remained neutral. It was approved by a large majority of voters and all cantons, the first time a referendum had been passed in every canton.
A referendum on grain supply was held in Switzerland on 5 December 1926. Voters were asked whether they approved of adding article 23bis to the constitution, which concerned grain supply. The proposal was rejected by a majority of voters and cantons.
A referendum on alcohol was held in Switzerland on 6 April 1930. Voters were asked whether they approved of amending articles 31 and 32 bis and adding article 32 quater, which concerned alcohol. The proposal was approved by a majority of voters and cantons.
A referendum on real estate was held in Switzerland on 2 July 1967. Voters were asked whether they approved of a popular initiative against real estate speculation. The proposal was rejected by a majority of voters and cantons.
A referendum on freemasonry was held in Switzerland on 28 November 1937. Voters were asked whether they approved of a popular initiative that would ban the practice. The proposal was rejected by a majority of voters and cantons.
Three referendums were held in Switzerland during 1898. The first was held on 20 February on a federal law that would nationalise the railways, and was approved by a majority of voters, leading to the establishment of Swiss Federal Railways in 1902. The second and third referendums were held on 13 November on revising article 64 and adding article 64bis to the constitution, both of which were approved by a majority of voters and cantons.
Three referendums were held in Switzerland during 1897. The first was held on 28 February on a federal law establishing a Central Bank, and was rejected by a majority of voters. The second and third were held on 11 July concerning an amendment to article 24 of the constitution and on legislation on potentially harmful foodstuffs and stimulants. Both were approved by a majority of voters and cantons.
Four referendums were held in Switzerland during 1903. The first was held on 15 March on a federal law on tariffs, and was approved by 59.6% of voters. The second, third and fourth were all held on 25 October concerning an amendment to the federal criminal law, a popular initiative on Swiss residents electing the National Council and an amendment to article 32bis of the constitution. All three were rejected by voters.
Two referendums were held in Switzerland during 1918. The first was held on 2 June on introducing a direct federal tax, and was rejected by a majority of voters and cantons. The second was held on 13 October 1918 on introducing proportional representation for National Council elections, and was approved by a majority of voters and cantons. As a result, proportional representation was introduced in the 1919 elections.
Three referendums were held in Switzerland during 1925. The first was held on 24 May on a popular initiative calling for insurance for invalidity, old age and bereavement, and was rejected by voters. The second was held on 25 October on a federal resolution on the settlement and residence of foreigners, and was approved by a majority of voters and cantons. The third was held on 6 December on a federal resolution on insurance for invalidity, old age and bereavement, and was also approved by a majority of voters and cantons.
A double referendum was held in Switzerland on 15 May 1927. Voters were asked whether they approved of amending article 30 of the constitution and a federal law on car and bicycle traffic. The constitutional amendment was approved by voters, whilst the traffic law was rejected.
Two referendums were held in Switzerland during 1928. The first was held on 20 May, asking voters whether they approved of amending article 44 of the constitution regarding measures against foreign infiltrators, and was approved by a majority of voters and cantons. The second was held on 2 December, asking voters whether they approved of the "Kursaalspiele" popular initiative on gambling, and was also approved.
Six referendums were held in Switzerland during 1938. The first four were held on 20 February; the first on amending articles 107 and 116 of the constitution to make Romansch an official language, which was approved by over 90% of voters and all cantons. The second was on a popular initiative "on urgent federal resolutions and the protection of people's rights" and was rejected by 85% of voters. The third was on a popular initiative on the private arms industry, and was also rejected by a wide margin, whilst the fourth was on a counter-proposal to the arms industry question, and was approved by voters. The fifth referendum was held on 3 July on the penal code, and was approved. The sixth and final referendum of the year was held on 27 November on a federal resolution on the transient order of the federal budget, and was approved by 72% of voters.
Four referendums were held in Switzerland during 1939. The first two were held on 22 January on a popular initiative on civil rights and a federal resolution on the restricted use of the urgency clause in the constitution. The third was held on 4 June on a constitutional amendment regarding the funding for government policies on defence and unemployment, and was approved by voters. The fourth was held on 3 December on a federal law on the employment status and insurance for federal civil servants, and was rejected by voters.
Two referendums were held in Switzerland during 1945. The first was held on 21 January on a federal law on the Swiss Federal Railways, and was approved by voters. The second was held on 25 November on a federal resolution on the "for the family" petition, and was also approved.
Three referendums were held in Switzerland during 1947. The first was held on 18 May on a popular initiative for "economic reform and rights concerning work", and was rejected by voters. The second and third were both held on 6 July on revising the articles of the federal constitution covering the economy and a federal law on aged and bereavement insurance. Both were approved by voters.
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