The Constitution of Ireland plebiscite, also known as the Plebiscite on the Draft Constitution, was a plebiscite held in the Irish Free State to approve the adoption of a new constitution for the country. The vote was held on 1 July 1937, the same day as the 1937 general election. It was passed by a plurality, with 56% of voters in favour, comprising 38.6% of the whole electorate. As a result, the current Constitution of Ireland came into effect on 29 December 1937, ending the Irish Free State. It was the first and only plebiscite to take place in the Irish Free State. Moreover, it was the only plebiscite that has ever been held in the country although there have been many referendums since then.