Original sentence: ) Within most of these counties there were large pockets which predominantly nationalist or Unionist (South Armagh, West Tyrone , West and South Londonderry and parts of North Antrim were largely nationalist whereas much of North Armagh, East Londonderry, East Tyrone and most of Antrim were/are largely Unionist).In County Londonderry, the breakdown in that election was 56.2% Unionist / 43.8% Nationalist
Edited sentence: ) Within most of these counties there were large pockets which predominantly nationalist or Unionist (South Armagh, West Tyrone , West and South Derry and parts of North Antrim were largely nationalist whereas much of North Armagh, East Derry, East Tyrone and most of Antrim were/are largely Unionist).In County Derry, the breakdown in that election was 56.2% Unionist / 43.8% Nationalist