Why Mark McGowan's landslide election victory could spell disaster for Scott Morrison in WA as the Liberals are reduced to just TWO MPs Western Australians went to the polling booths on Saturday in state election tipped to be a landslide for Labor Voting at 700 locations closed at 6pm on Saturday with 750,000 people voting before election day Labor premier Mark McGowan raced to immediate lead with ABC's Anthony Green declaring a win early on Liberal leader Zak Kirkup conceded defeat at 9.30pm AWST and declared he had also lost his individual seat