What is a by-election?
A by-election is an election held to fill a vacant electorate seat — for example, if a member of Parliament resigns or dies. A by-election is only open to voters who are enrolled in that particular electorate, and there is no party vote.
Just like a general election, a by-election has rules and timelines to follow. The voting period runs for about two weeks.
Find out more including when a by-election will not be held.