Western Australia could be key to deciding who wins the federal election, as counting shows the race to form government is extremely tight.
The coalition and Labor are neck and neck, after nearly three hours of counting.
Western Australia is a Liberal stronghold federally. Labor holds only three seats of the 15 lower house seats and three of the 10 Senate seats.
The focus for WA is whether Labor can increase the paltry three lower house seats it holds after it hit historic lows and the Liberals historic highs at the last election.
The party believes it can win the new seat of Burt, while it is also hopeful of achieving an upset in Cowan, where candidate Anne Aly, a counter-terrorism expert and Muslim, is trying to end Liberal Luke Simpkins' hold since 2007.
Foreign Affairs Minister Julie Bishop, WA's most high profile federal politician, was confident of the party's showing in the state.
"As I've been travelling around the electorates - particularly in Burt and Cowan - I haven't sensed a mood for change, and so I'm hoping that we will be able to retain our 12 and pick up a 13th in Burt, but that would be a big call," she told the ABC on Saturday night.
She told Seven the outcome may come down to what happens in WA.
"The West might well be deciding the vote; it's been a long time since it's been the West's turn but obviously 12 seats in Western Australia out of 16 would be a good boost to it," she said.
She voted at Swanbourne primary in her electorate of Curtin, one of the safest Liberal seats in the country, earlier on Saturday where she was welcomed by WA Premier Colin Barnett.
The unpopular premier, who faces his own election next year, predicted that Malcolm Turnbull would win Saturday's election and the Liberals would hold on to their dominant position in WA and hold all 12 seats.
Labor elder statesman Kim Beazley said WA was not a natural home for the ALP, with only 22 per cent considering themselves working class.
"There is no basis for a safe Labor seat in Western Australia anywhere and there hasn't been for a very lengthy period of time," he told the Nine Network on Saturday.
The West Australian native said state factors would not play into Saturday's vote.
"Western Australians differentiate heavily between federal and state governments ... they certainly know the difference between Turnbull and Barnett," he said.
In the Senate, the 12th and final spot is considered a raffle, with Kado Muir, a 46-year-old Aboriginal man and anthropologist with thick dreadlocks, trying to be the first Nationals senator from WA since 1978.
Ms Bishop said if the coalition won, that would mean a mandate for its economic plan.
"I hope the crossbenchers, I hope the independents, I hope the Greens and every other minor party listen to the will of the Australian people."
