Bid by Conservative for collection (9)
I believe the answer is:
offertory
'collection' is the definition.
(I've seen this before)
'bid by conservative' is the wordplay.
'bid' becomes 'offer' (synonyms).
'by' is a charade indicator (letters next to each other).
'conservative' becomes 'tory' (informal term for a Conservative Party member).
'offer'+'tory'='OFFERTORY'
'for' acts as a link.
(Other definitions for offertory that I've seen before include "Fry to fore at this part of church ceremony" , "Money collected during church service" , "Donation" , "part of church service" , "Church collection" .)