No mean party? (7)
I believe the answer is:
liberal
This clue might be a double definition.
'no' is the first definition.
Both the answer and definition are adjectives. Perhaps you can see an association between them that I can't see?
'party?' is the second definition.
(Liberal Party is an example)
'mean' is the link.
Can you help me to learn more?
(Other definitions for liberal that I've seen before include "Generous; broad-minded" , "Progressive -- open-handed" , "In favour of policies of progress and reform" , "Broad-minded in Braille" , "Not strict" .)