Historic constituencies in County Mayo, Ireland

Republic of Ireland	Carlow Cavan Clare Cork Donegal Dublin Dún Laoghaire–Rathdown Fingal South Dublin City Galway Kerry Kildare Kilkenny Laois Leitrim Limerick Longford Louth Mayo Meath Monaghan Offaly Roscommon Sligo Tipperary Waterford Westmeath Wexford Wicklow
Northern Ireland	Antrim Armagh Down Fermanagh Londonderry Tyrone