No actual polling took place in Southern Ireland as all 128 candidates were returned unopposed. Of these, 124 were won by Sinn Féin and four by independent Unionists representing the University of Dublin (Trinity College).
Only Sinn Féin candidates recognised the Dáil and five of these had been elected in two constituencies (Michael Collins, Eamon de Valera, Arthur Griffith, Sean Milroy and Eoin MacNeill) one in each part of Ireland. The total number of members who assembled in the Second Dáil was 125: 119 elected solely in Southern Ireland, 1 solely in Northern Ireland (John O'Mahony), and 5 in both.