These same constituencies also replaced those provided in the Redistribution of Seats (Ireland) Act 1918 for representation of Ireland in the House of Commons of the United Kingdom at Westminster. Sinn Féin used these constituencies to elect the Second Dáil (1921–22) and those constituencies in Southern Ireland were used to elect the Third Dáil (1922–23).
The same electoral districts that had been established for representation of Ireland in the House of Commons at Westminster under the Redistribution of Seats (Ireland) Act 1918 were subsequently employed by Sinn Féin to elect the Second Dáil (1921-1922) and those constituencies in Southern Ireland were used to elect the Third Dáil (1922-1923).