Prime Minister Scott Morrison is set to secure majority government with the Liberals expected to win several tight races, including Malcolm Turnbull's old seat of Wentworth.
The Coalition started the week with 75 seats, Labor was on 65 and a handful were too close to call.
But the independent incumbent in Wentworth Kerryn Phelps is expected to concede defeat to the Liberal candidate Dave Sharma on Monday.
With Wentworth added to the Liberals' column, that gives the Coalition the required seats to form majority government with its tally likely to grow to 77 seats by the end of the day.
The ABC's election guru Antony Green believes the Coalition will also pick up Chisholm and Bass, while the Labor candidate in Boothby has conceded defeat to incumbent Nicolle Flint.
There's been a swing towards Labor in Chisholm in Melbourne's east, with only a small number of votes separating the Liberal Party's Gladys Liu and Labor's Jennifer Yang.
The Liberals are ahead in Bass in Tasmania, while the ALP leads in Wayne Swan's former seat of Lilley in Queensland and Macquarie in New South Wales.
In Cowan in Western Australia, Labor's Anne Aly is expected to win.
