Classy politician international socialist judged (7)
I believe the answer is:
umpired
'judged' is the definition.
(umpiring is a kind of judging)
'classy politician international socialist' is the wordplay.
'classy' becomes 'u' (I've seen this in other clues).
'politician' becomes 'mp' (Member of Parliament).
'international' becomes 'i' (abbreviation eg in IMF).
'socialist' becomes 'red' (socialism is often associated with the colour red).
'u'+'mp'+'i'+'red'='UMPIRED'
(Other definitions for umpired that I've seen before include "Refereed" , "Officiated (cricket)" , "Ripe mud (anag.)" .)