The 1975 EC membership referendum was the first major referendum to be held in the county, and saw one of the largest majority votes in favour of continued membership of the then European Communities (which would later become the European Union) within non-metropolitan Lincolnshire and also Humberside, which then included northern parts of historic Lincolnshire. The referendum was held on 5 June 1975 with votes within the county being centrally counted under the provisions of the Referendum Act 1975 where voters were asked to decide on the question “Do you think that the United Kingdom should stay in the European Community (the Common Market)?” by voting for either “Yes” or “No”. The result was declared on the following day.