Frank gets different seat when they stand for election (10)
I believe the answer is:
candidates
'they stand for election' is the definition.
The definition suggests an adverb but the answer is not.
'frank gets different seat' is the wordplay.
'frank' becomes 'candid' (synonyms).
'gets different' indicates anagramming the letters (I've seen 'get different' mean this (I've seen this in other clues)).
'seat' is an anagram of 'ates'.
'candid'+'ates'='CANDIDATES'
'when' is the link.
Can you help me to learn more?
(Other definitions for candidates that I've seen before include "Entrants" , "those awaiting interview?" .)