Greens on knife-edge in lower house seats

The Greens insist they remain in the hunt to win two lower house seats in Melbourne with both Batman and Melbourne Ports "on a knife edge".

The Greens' Alex Bhathal could claim Batman from sitting Labor MP David Feeney, whose campaign got off to a terrible start when it was revealed he hadn't declared a $2.3 million property.

"That is absolutely line ball, on a knife edge, we won't know tonight," party leader Richard Di Natale told supporters at the Greens' election event in Melbourne.

With 70 per cent of the ballots counted, the ALP was just ahead with 50.3 per cent of the vote on a two-party preferred basis.

The Greens' Stephanie Hodgins-May also remains in with a shot in the three-way race in Melbourne Ports.

The key there is getting over the Labor Party's Michael Danby on primary votes, Senator Di Natale said on Saturday, "then we're in with a chance of knocking off the Liberals' (Owen Guest)" on preferences.

"We have two seats now that are on a knife edge."

The Greens are also hoping to pick up an additional Senate seat in Queensland but are likely to see Senator Robert Simms fall in South Australia.

If the Greens don't win Batman or Melbourne Ports the party would - despite large swings to it - maintain its current numbers in the federal parliament with one lower house MP and 10 senators.

Adam Bandt easily retained his seat of Melbourne on Saturday night.

Senator Di Natale insists the minor party won't support a coalition government in the event of a hung parliament.