To exclude outsiders from party list, pay any skilled worker (7)
I believe the answer is:
artisan
'skilled worker' is the definition.
(artisan is a kind of skilled worker)
I don't understand how the remainder of the clue works.
(Other definitions for artisan that I've seen before include "Skilled workman" , "Journeyman" , "man with skill" , "Skilled craftsperson" , "one in command of craft?" .)