Need change, party finished (5,2)
I believe the answer is:
ended up
'finished' is the definition.
('end up' can be a synonym of 'finish')
'need change party' is the wordplay.
'change' indicates an anagram.
'party' becomes 'dup' (Democratic Unionist Party).
'need' is an anagram of 'ende'.
'ende'+'dup'='ENDED UP'
(Other definitions for ended up that I've seen before include "Reached final state (as)" , "Finished" , "Arrived eventually" .)