Anglo-Irish Treaty Dáil vote

The Anglo-Irish Treaty was signed in London on 6 December 1921 and Dáil Éireann voted to approve the treaty on 7 January 1922, following a debate through late December 1921 and into January 1922. The vote was 64 in favour, 57 against, with the Ceann Comhairle and 3 others not voting. 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.

Two elections took place in Ireland in 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. The election was used by the Irish Republic as the basis of membership of the Second Dáil. The general election to the Northern Ireland House of Commons occurred on 24 May. Of 52 seats, forty were won by unionists, six by moderate Irish nationalists and six by Sinn Féin. No actual polling took place in the Southern Ireland constituencies, as all 128 candidates were returned unopposed. 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). Supporters of the Irish Labour Party stood aside to allow the constitutional situation to run its course. Of these 128, 124 were won by Sinn Féin, and four by independent unionists representing the University of Dublin. Only the Sinn Féin candidates recognised the Second Dáil and five of these had been elected in two constituencies, one in each part of Ireland, so the total number of members who assembled in the Second Dáil was 125.

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