Voting Systems in WA

State elections

There are different voting systems for each house of Parliament in Western Australia.

Voting system for the Legislative Assembly    

Candidates are elected to the Legislative Assembly through full preferential voting. This is a system whereby a candidate must poll an absolute majority of the total formal votes (in excess of 50% in order to be elected.)

This system is characterised by the elector numbering all squares on the ballot paper in order of preference. The ballot paper markings should clearly reflect the elector’s intention.

If, after all first preference votes have been counted, no candidate has obtained an absolute majority of all formal votes, then the candidate with the fewest number of first preference votes is excluded from the count. The excluded candidate’s second preference votes are then distributed to the remaining candidates at this stage.

If, after that exclusion, no candidate has obtained an absolute majority of formal votes, the next remaining candidate with the fewest votes is excluded and all of his or her votes (second preferences and those received from the previously excluded candidate) are distributed to the remaining candidates.

The process is continued until one candidate is elected by obtaining an absolute majority of formal votes. The absolute majority is calculated excluding informal and exhausted votes. To see a diagram explaining the steps involved in this process click 

Voting system for the Legislative Council     

Proportional representation is the voting system used in multi-member electorates such as the Western Australian Legislative Council.

To be successful, a candidate is required to receive enough votes to reach a quota (not an absolute majority) which is based on the number of formal votes and number of candidates to be elected.

Electors mark their ballot, allocating preferences to their preferred ranking for all candidates. A successful candidate must achieve a quota, calculated using the following formula: 

Subsequently, if the quota is not reached the candidate with the least number of votes is excluded and their votes redistributed according to the second preference shown. This process continues until a candidate reaches a quota.

Candidates, who receive a number of votes equal to or greater than the quota are elected immediately. Any votes of these elected candidates, which are surplus to the quota, are transferred to the remaining candidates at a reduced value known as a transfer value.

Filling vacancies in the Legislative Council 

If a member, or members, of the Legislative Council vacate their position, before a State general election, the process to fill the vacancy is set out in the Electoral Act 1907.

His Excellency the Governor of Western Australia will inform the Electoral Commissioner of the vacancy or vacancies. Once informed the Electoral Commissioner will determine if it is practicable to fill the vacancy.

If it is, the Commissioner will advertise the vacancy and Qualified People have 10 days to nominate for the vacancy. To be a 'Qualified Person' they must be: a person who was a candidate who stood for the previous election, did not withdraw from, and was not elected at that election; and have not become a member of the Council since that election; and are qualified to be elected and are not disqualified from being elected as a member of the Council.

After the 10 day period has expired one of three things will occur:

1

If only one Qualified Person nominates for a vacancy they will be declared elected and His Excellency the Governor of Western Australia will be informed.

2

If more than one Qualified Person nominates for a vacancy a re-count of the votes previously cast in the election will be occur, excluding the member (or members) who vacated their position.

The re-count will follow the methodology explained above in the Voting system for the Legislative  Council section and the successful candidate will be declared elected and His Excellency the Governor of Western Australia will be informed.

3

If no Qualified People nominate for a vacancy, His Excellency the Governor of Western Australia will be informed and will then issue a writ for a fresh election in the region concerned to fill the vacancy.

To see a diagram explaining the steps involved in this process click here.    

Local government elections

Local government and other elections use the ‘first-past-the-post’ system. This means that electors indicate their preferred candidate(s), and the candidate with the most votes is elected. Where there are multiple vacancies, the candidate with the most votes is elected first, and the candidate with the second highest number of votes is elected second, and the process continues until all vacancies are filled.