Chance of getting a seat, generally? (8)
I believe the answer is:
election
'chance' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for election that I've seen before include "Time to vote" , "Ballot for public office" , "A vote to select politicians" , "Vote to choose representatives" , "Polling process" .)