County party with right clique (6)
I believe the answer is:
dorset
'county' is the definition.
(I've seen this before)
'party with right clique' is the wordplay.
'party' becomes 'do' (do is a kind of party).
'with' says to put letters next to each other.
'right' becomes 'r' (common abbreviation).
'clique' becomes 'set' (I've seen this before).
'do'+'r'+'set'='DORSET'
(Other definitions for dorset that I've seen before include "County of south-west England" , "County adjoining 1" , "Strode (anag.)" , "Coastal county of southern England" , "English county -- sorted (anag)" .)