Exclusive vote that may be taken between the reds (9)
I believe the answer is:
blackball
This clue could be a double definition.
'exclusive' is the first definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'vote that may be taken between the reds' is the second definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for blackball that I've seen before include "Ostracise" , "Veto (membership)" , "Exclude by a negative vote" , "bar?" , "Refuse to endorse" .)