Moral victory by good Conservative (5,4)
I believe the answer is:
right wing
'conservative' is the definition.
(thesaurus)
'moral victory by good' is the wordplay.
'moral' becomes 'right' ('right' can be similar in meaning to 'moral'**).
'victory' becomes 'win' (I've seen this before).
'by' means one lot of letters go next to another.
'good' becomes 'g' (abbreviation).
'right'+'win'+'g'='RIGHT-WING'
(Other definitions for right wing that I've seen before include "Politically Conservative" , "One soccer side" , "part of the field for Beckham?" , "position adopted by footballer" , "Tory" .)