Prefix with liberal or conservative (3)
I believe the answer is:
neo
'prefix with liberal or conservative' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for neo that I've seen before include "Prefix meaning new or recent" , "language" , "Prefix meaning new of modern form of" , "Prefix donating new" , "Prefix meaning new, maybe one" .)