One upset about the colliery is proposed for election (7)
I believe the answer is:
nominee
'proposed for election' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'one upset about the colliery' is the wordplay.
'upset' is an anagram indicator.
'about' means one lot of letters goes inside another.
'the colliery' becomes 'mine' (a colliery is a coal mine).
'one' is an anagram of 'noe'.
'noe' going around 'mine' is 'NOMINEE'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for nominee that I've seen before include "Candidate - appointed person" , "figure entering field?" , "Person put up for a post" , "Candidate for office" , "Person selected to seek election" .)