CANBERRA, Australia — Leaders of Australia's two major political parties lobbied for support from independent lawmakers to stitch together the nation's first minority government since World War II after the closest elections in almost 50 years.

Australia's dollar was trading lower Monday as uncertainty remained over the result of weekend federal elections, with the ruling Labor Party losing seats to the environment-focused Greens party in a backlash over the government's shelving of plans to charge major polluters for every ton of carbon gas they emit.

The final results of Saturday's vote may not be known for a week or more but both Labor and the Liberal Party-led opposition conceded neither would achieve the 76 seats needed to form a government in the 150-seat lower chamber.

"So the question before all of us is this: Which party is better able to form a stable and effective government in the national interest?" Prime Minister Julia Gillard, who remains caretaker leader, told reporters Sunday.

Both Gillard and Liberal leader Tony Abbott have initiated talks with three independents in the House of Representatives, as well as the Greens party, in a bid to secure votes in the House of Representatives. Neither revealed what they were prepared to offer in the confidential negotiations.

The Australian dollar opened 0.44 per cent lower Monday, trading at 88.63 U.S. cents, compared to Friday's close at 89.46 cents. Shares on the Australian stock exchange also opened marginally lower.

With more than 78 per cent of the vote counted, the Australian Electoral Commission said the ruling centre-left Labor Party had won 70 seats and the opposition Liberal Party-led coalition 72. Most analysts agreed the coalition was likely to finish with 73, one seat ahead of Labor.

Independent lawmaker Tony Windsor said Monday he hasn't yet made a decision on which party to align himself with to help form the new government.

"There's a way to go yet and I'd ask people to breathe in," he told Sky News television. "There's a process at work, the world won't come to an end and we'll make sure there's good governance hopefully for longer than a short period and hopefully for three years."

He said he would meet with the other two independents, Rob Oakeshott and Bob Katter, in Canberra on Monday or Tuesday to discuss their preferences.

No Australian government has had to rely on the support of independent lawmakers to rule since 1943.

Analyst Norman Abjorensen, an Australian National University political scientist, said the most likely outcome would be an unstable minority government led by Abbott and supported by the three independents.

The Greens' record support in the polls increased the party's Senate seats from five to nine, giving it the leverage to become kingmaker in deciding which major party controls the upper chamber.

Abbott -- who doubts the science behind climate change and rules out ever taxing polluters for their greenhouse gas emissions -- said the Labor government had proved unstable after Gillard ousted former Prime Minister Kevin Rudd in a surprise internal party coup two months ago.

"It's certain that any Labor government emerging from yesterday will be chronically divided and dysfunctional," Abbott said.