Millions in favour of trade union backing case for election (7)
I believe the answer is:
fortune
'millions in favour of trade union backing case for election' is the definition.
I can't tell whether this definition defines the answer.
'in favour of trade union backing case for election' is the wordplay.
'in favour of' becomes 'for' (being for a particular cause).
'trade union' becomes 'TU' (abbreviation for trade union).
'backing' says the letters should be written in reverse.
'case for' means to remove the middle letters (the letters which encase the others are used).
'election' with its middle taken out is 'en'.
'en' reversed gives 'ne'.
'for'+'tu'+'ne'='FORTUNE'
Can you help me to learn more?
(Other definitions for fortune that I've seen before include "Fate; riches" , "Great accumulation of wealth" , "A lot of money - luck" , "Fate, destiny" , "large sum of money" .)