The Greens appear certain to win the federal seat of Brisbane, snatching the spot from the Liberal incumbent, and gaining a fourth seat in the House of Representatives.
The victory also restricts Labor to just 75 seats so far – one less than the majority needed for the party to govern in nits own right
The party was expected to make a formal announcement around 3pm local time on Saturday.
ABC Election Analyst Antony Green called the seat for candidate Stephen Bates around 2.30pm.
The result comes after a close race and a tense week of vote counting in the inner city seat which covers the city of Brisbane.
Mr Bates beat our Labor hopeful Madonna Jarrett in a tight contest.
The win is the third for the Greens in Queensland, where they also took the seat of Ryan and Griffith. Party leader Adam Bandt holds the seat of Melbourne in Victoria.
Outgoing Liberal MP Trevor Evans conceded defeat last Saturday as, despite leading the three-candidate preferred count, he is unlikely to retain his seat according to the flow of preferences.
Macnamara up in the air
The Australian Electoral Commission on Friday released new data showing an unusual three-candidate preferred status for Brisbane and Macnamara in Victoria, which still remains in doubt.
In Macnamara, incumbent Labor MP Josh Burns has taken a slight lead over Greens rival Steph Hodgins-May, with Liberal candidate Colleen Harkin trailing.
Liberal candidate Andrew Constance is 253 votes ahead of sitting Labor MP Fiona Phillips in the NSW electorate of Gilmore, with postal votes slightly favouring Mr Constance.
The commission had Labor with 75 seats to the Coalition’s 59, the Greens with three seats, and 12 on the cross bench.