Anglo-Irish Treaty Dáil vote

The Sinn Féin party split into opposing sides in the aftermath of the Treaty vote, which led to the Irish Civil War from June 1922 to May 1923.

Given the backdrop of the increasingly violent War of Independence, any candidates opposed to Sinn Féin and their supporters could expect to be harassed by the Irish Republican Army (IRA).

On 14 September 1921 the Dáil ratified the appointment of Arthur Griffith, Michael Collins, Robert Barton, Eamonn Duggan and George Gavan Duffy as envoys plenipotentiary for the peace conference in England.

Three TDs eligible to vote did not do so: To satisfy the requirements of the British constitution, the treaty also had to be ratified by the House of Commons of Southern Ireland.

The anti-Treaty groups of IRA members, TDs and their supporters were still bitterly opposed to the settlement, despite the election result, and this led on to the Irish Civil War.