A constitutional referendum was held in Denmark

Denmark

Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark...

 on 6 September 1920. It was held in order to make changes to the constitution

Constitution of Denmark

The Constitutional Act of Denmark is the Kingdom of Denmark's constitution, or fundamental law. Originally verified in 1849, the last revision was signed on 5 June 1953 as "the existing law, for all to unswerving comply with, the Constitutional Act of Denmark".-Idea and structure:The main...

 of Denmark

Denmark

Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark...

 from 1915 that had been made necessary to facilitate the reunification of Southern Jutland

South Jutland County

South Jutland County is a former county on the south-central portion of the Jutland Peninsula in southern Denmark....

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.

Results

Choice	Votes	%
For	614,227	96.9
Against	19,592	3.1
Invalid/blank votes	6,940	–
Total	640,759	100
Source: Nohlen & Stöver