A constitutional referendum was held in France on 21 October 1945. Voters were asked whether they approved of the Assembly elected on the same day serving as a Constituent Assembly, and whether until a new constitution was approved, the country would be governed according to a proposed set of laws that appeared on the ballot paper. If the first proposal had not been approved, the Third Republic would have been restored, but its approval led to the creation of the Fourth Republic. Both were approved by wide margins with a turnout of 79.8%.
A constitutional referendum was held in France on 5 May 1946. Voters were asked whether they approved of a new draft Constitution proposed by the Constituent Assembly elected in 1945.
A constitutional referendum was held in France on 13 October 1946. Voters were asked whether they approved of a new constitution proposed by the Constituent Assembly elected in June. Unlike the May referendum, which saw a previous constitutional proposal rejected, the new constitution was accepted by 53.2% of voters, and brought the French Fourth Republic into existence. Voter turnout was 67.6%.
A constitutional referendum was held in France on 28 September 1958. Voters were asked whether they approved of the adoption of a constitution for the French Fifth Republic written by Charles de Gaulle. It was overwhelmingly approved, with 82.6% in favour. Voter turnout was 84.9% in Metropolitan France and 79.8% overall.
A referendum was held in France on 20 and 21 December 1851. Voters were asked whether they approved of the continuation of the authority of Louis Napoléon Bonaparte and to delegate the powers required to produce a new constitution. It was approved by 92% of voters with an 81.7% turnout.
A constitutional referendum was held in Poland on 25 May 1997. Voters were asked whether they approved of a new constitution. It was narrowly approved, with 53.5% voting in favour. Voter turnout was just 42.9%. Although the 1995 Referendum Act stated that a 50% turnout was required to validate the referendum, the Supreme Court ruled on 15 July that the constitution could be introduced.
A constitutional referendum was held in Bulgaria on 16 May 1971. Voters were asked whether they approved of a new constitution, whose first article noted the "leading role" of the Communist Party. The result was reportedly 99.7% in favour, with a voter turnout of 99.7%.
Three referendums were held in Liechtenstein during 1973. The first was held on 11 February on introducing women's suffrage, but was rejected by 55.9% of voters. The second was held on 14 October on changing the electoral system to a candidate-based proportional system one, and was approved by 55.8% of voters. The third on 14 October was on reducing the electoral threshold from 18% to 8%, and was approved by 67.9% of voters.
A constitutional referendum was held in Malta between 2 and 4 May 1964. The new constitution was approved by 54.5% of voters, and came into effect on 21 September 1964. It was effectively a referendum on independence, as the new constitution gave the country self-government.
A constitutional referendum was held in Romania on 8 December 1991. The new constitution was approved by 79.1% of voters.
A referendum on the electoral law was held in San Marino on 3 July 2005. Voters were asked four questions on changes to the electoral law and electoral system. Although all four were approved by a majority of those voting, voter turnout was just 21.7%, meaning that the quorum of 32% of registered voters (10,143) was not achieved for any question. This resulted in all four questions failing, including two that proposed raising the quorum to 40%.
A constitutional referendum was held in Switzerland on 19 April 1874. The new constitution was approved by 63.2% of voters and a majority of cantons. It gave more responsibilities and powers to the federal government.
A two-part referendum was held in Switzerland on 23 May 1875. A new federal law establishing and certifying civil status and marriage was narrowly approved, whilst a new federal law on suffrage was narrowly rejected.
Two referendums were held in Switzerland in 1887. The first was held on 15 May, asking voters whether they approved of a federal law on spirits, and was approved by 65.9% of voters. The second was held on 10 July, asking voters whether they approved of an amendment made to article 64 of the federal constitution, and was approved by 77.9% of voters and 20.5 cantons.
Five referendums were held in Switzerland in 1891. The first was held on 15 March on a federal law on federal officials who had become unemployable due to disability, and was rejected by 79.4% of voters. The second was held on 5 July on a constitutional amendment, and was approved by 60.3% of voters. Two referendums were held on 18 October, one on revising article 39 of the federal constitution and one on a federal law on Swiss tariffs; both were approved. The last was held on 6 December on the question of whether the federal government should purchase the Swiss central railway, but was rejected by 68.9% of voters.
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.
Two referendums were held in Switzerland in 1959. The first was held on 1 February on the introduction of women's suffrage at the federal level, but was rejected by 67% of voters. The second was held on 24 May on adding article 22bis to the federal constitution, which concerned civil protection. It was approved by 62% of voters.
Three referendums were held in Switzerland in 1971. The first was held on 7 February on introducing women's suffrage at the federal level, and was approved by 66% of voters. The second and third were held on 6 June on a constitutional amendment to introduce the human right to a non-hazardous environment and a federal resolution on federal finances. In the first referendum in which women were allowed to vote, both were approved by voters.
Five referendums were held in Switzerland in 1970. The first was held on 1 February on a federal resolution on the domestic sugar market, and was approved by voters. The second was held on 7 June on a popular initiative "against foreign infiltration", and was rejected by voters. The third and fourth were held on 27 September on an amendment to the Swiss Federal Constitution regarding promoting gymnastics and sports, which was approved, and a popular initiative on the "right to habitation and expansion of family protection", which was rejected. The fifth was held on 15 November on an amendment to the federal financial order, and was approved by voters.
