In novella, rot celebrity turned up about voting (9)
I believe the answer is:
electoral
'voting' is the definition.
(I've seen this before)
'in novella rot celebrity turned up' is the wordplay.
'in' indicates the answer is hidden within the clue.
'turned up' shows that the letters should be reversed in order.
'larotcele' is hidden within 'novella rot celebrity'.
'larotcele' written backwards gives 'ELECTORAL'.
'about' is the link.
(Other definitions for electoral that I've seen before include "kind of US college" , "concerning voters" , "on the voting register" , "concerned with votes" , "type of roll" .)