Percentage of seats gained by each of the party. Sinn Féin candidates in Southern Ireland were returned unopposed (dark green). The Nationalist Party and Ulster Unionist Party ran only in Ulster, along with Sinn Féin.
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). When the date of the elections was announded in the House of Commons, the Conservative MP Sir William Davison, who had been born in Broughshane, County Antrim, had asked "What is the object of holding elections in Southern Ireland when any candidates who do not support Sinn Fein would be shot?" Other members had replied "How do you know?"