There were two elections in Ireland on 24 May 1921, as a result of the Government of Ireland Act 1920 to establish the House of Commons of Northern Ireland and the House of Commons of Southern Ireland. A resolution of Dáil Éireann on 10 May 1921 held that these elections were to be regarded as elections to Dáil Éireann and that all those returned at these elections be regarded as members of Dáil Éireann. According to this theory of Irish republicanism, these elections provided the membership of the Second Dáil. The Second Dáil lasted 297 days.