Map of the 1918 United Kingdom general election results in Ireland, showing Sinn Féin vote share by constituency.
Constituencies Sinn Féin won without context are marked by an asterix. Only 1 constituency was uncontested by Sinn Féin - North Down.

Map style inspired by work by Talleyrand6 - eg this map of the 1945 Northern Ireland general election
Own work
MrPenguin21