Labour outcast initially seen in part of Ireland or part of Scotland (8)
I believe the answer is:
galloway
'part of scotland' is the definition.
('Galloway' is part of 'scotland')
'labour outcast initially seen in part of ireland' is the wordplay.
'initially' suggests taking the first letters.
'seen in' indicates putting letters inside.
'part of ireland' becomes 'galway' (I've seen this before).
The first letters of 'labour outcast' is 'lo'.
'lo' placed inside 'galway' is 'GALLOWAY'.
'or' is the link.
(Other definitions for galloway that I've seen before include "Scottish region" , "Breed of cattle; area of Scotland" , "Respect MP" , "Scots breed of cattle" , "Area of southwest Scotland" .)