Fan with flower, conveying X? (7)
I believe the answer is:
devotee
'fan' is the definition.
(I know that fan can be written as devotee)
'flower conveying x?' is the wordplay.
'flower' becomes 'dee' (River Dee).
'conveying' is an insertion indicator.
'x?' becomes 'vote' (you cast a vote by drawing a cross).
'dee' enclosing 'vote' is 'DEVOTEE'.
'with' acts as a link.
(Other definitions for devotee that I've seen before include "A very loyal or loving person" , "Person who is utterly loyal and committed to someone" , "One strongly interested in something" , "Fan, enthusiast" , "An enthusiastic admirer and supporter" .)