MANDURAH leads the way in the early voting with more than 7000 votes and almost one quarter of electors having voted early.
Electoral Commissioner David Kerslake said early voting across WA, with the removal of the requirement to give a reason and a record number of enrolled voters, was already breaking records.
As of yesterday, more than 155,000 votes had been recorded, almost double the total number of early votes at the last State Election.
The WA Electoral Commission expects to take more than 180,000 early votes in person and 120,000 postal votes, around 20 per cent of total electors.
Mr Kerslake said electors who had applied for a postal vote should make sure their completed ballot paper was posted by election day on Saturday.
Alternatively, completed postal votes (including the declaration envelope) can be handed in at any polling place.
Voting is compulsory for all enrolled electors.
Early voting closes at 6pm today.