Folketing elections were held in Denmark on 3 April 1939, except in the Faroe Islands where they were held on 19 April. They followed a dissolution of both chambers in order to call a referendum on changing the constitution. The referendum was held on 23 May but failed due to a low voter turnout. The result of the elections was a victory for the Social Democratic Party, which won 64 of the 149 seats. Voter turnout was 79.2% in Denmark proper and 47.8% in the Faroes.
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 constitutional referendum was held in France on 8 May 1870. Voters were asked whether they approved of the liberal reforms made to the constitution since 1860 and passed by the Sénatus-consulte on 20 April 1870. The changes were approved by 82.7% of voters with an 81.3% turnout. However, France's defeat in the Franco-Prussian War caused the Empire to be abolished later that year. Despite this being the ninth constitutional referendum in French history, it was the first to have more than 8% oppose the motion, and one of only four to have less than 99% official approval.
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 Denmark on 6 September 1920. It was held in order to make changes to the constitution of Denmark from 1915 that had been made necessary to facilitate the reunification of Southern Jutland into the kingdom of Denmark. The changes were approved by 96.9% of voters, with a 49.6% turnout. A total of 614,227 of the 1,291,745 registered voters voted in favour, meaning that 47.6% of eligible voters had voted for the proposals, above the 45% required by the constitution.
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 Albania on 7 November 1994. Voters were asked whether they approved of the new constitution published on 6 October, which would have given more power to the country's President. However, it was rejected by voters, with just 43.6% in favour. Voter turnout was 84.4%.
A constitutional referendum was held in Andorra on 14 March 1993. Drafted by the Co-Princes and the General Council, the new constitution was approved by 74.2% of voters, with a 76% turnout. The first elections under the new constitution were held later in the year.
Parliamentary elections were held in Bulgaria on 27 June 1971, the first held under the new Zhivkov Constitution, which had been approved in a referendum held a month earlier. The Fatherland Front, dominated by the Bulgarian Communist Party, was the only organisation to contest the election; all candidate lists had to be approved by the Front. The Front nominated one candidate for each constituency. Of the 400 candidates 268 were members of the Communist Party, 100 were members of the Bulgarian Agrarian National Union and the remaining 32 were unaffiliated. Voter turnout was reportedly 99.9%.
A referendum on becoming a republic was held in Bulgaria on 8 September 1946. The result was 95.6% in favour of the change, with voter turnout reported to be 91.7%. Following the referendum, a republican constitution was introduced the following year.
A referendum on a new constitution and citizenship was held in Estonia on 28 June 1992. Voters were asked whether they approved of the new constitution drawn up by the Constitutional Assembly and extending suffrage to people registered as citizens. The new constitution was approved by 91.9% of voters, whilst the suffrage extension was rejected by 53.5%. Voter turnout was 66.8% for the constitution question and 66.7% for the suffrage question.
A constitutional referendum was held in Lithuania on 10 November 1996 alongside the second round of the parliamentary elections. Voters were asked whether they approved of an amendment to Article 47 of the constitution to add a paragraph allowing EU citizens to buy agricultural land. Although it was approved by 52% of those voting, voter turnout was only 39.7% and the referendum failed to pass the threshold of 50% of registered voters in favour.
A constitutional referendum was held in Romania on 8 December 1991. The new constitution was approved by 79.1% of voters.
A constitutional referendum was held in Switzerland on 6 June 1848. The new constitution was approved by 72.8% of voters and a majority of cantons.
A constitutional referendum was held in Switzerland on 12 May 1872. The new constitution was rejected by 50.5% of voters and a majority of cantons.
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 referendum on accident and health insurance was held in Switzerland on 2 October 1890. Voters were asked whether they approved of a federal resolution on amending the constitution with regards to accident and health insurance. It was approved by a majority of voters and cantons.
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.
