Prime Minister Julia Gillard of Australia said Wednesday that national elections would take place in September, giving unusually lengthy notice to voters and her opponents of a hard campaign ahead.In a speech in the national capital, Canberra, Gillard gave a somber assessment of the economic and social challenges that Australia is facing under her Labor government, which is struggling in opinion polls.

She said that announcing the timetable for the September vote now would end "speculation about election timing" and give "shape and order to the year."

But some commentators suggested that in trying to give the country more clarity, she was in fact creating a drawn-out ordeal for voters.

"Julia Gillard has consigned Australians to something approaching a national pregnancy," wrote Tony Wright, national affairs editor at The Age, a daily newspaper.

Federal election campaigns in Australia traditionally last around six weeks, far shorter than presidential races in the United States.

Wright said that a 10 week campaign in Australia in 1984 left voters tired and "tetchy" and hurt the party of the incumbent prime minister at the time, Bob Hawke.

"No more long campaigns became the unbreakable mantra," Wright said, noting that the September 14 date set by Gillard is 32 weeks away.

Gillard, 51, said in her speech Wednesday that the aim of giving such exceptionally advanced notice was to make the year "one not of fevered campaigning, but of cool and reasoned deliberation."

Dennis Shanahan, political editor of The Australian, a national broadsheet newspaper said that although Gillard was giving up the advantage of surprise that she held over the opposition, she would have the chance to leverage the benefits of her incumbency.

"The prime minister has ensured that she will be able to maximize the effect of being in office, governing, working and being in parliament while people see her as the prime minister," Shanahan said.

Her main challenger, Tony Abbott, the leader of the opposition, said he welcomed the announcement of the date.

Abbott, 55, said his coalition was "ready" and suggested that the election campaign would focus on themes like tax, regulation and freedoms.

Gillard, who managed to form a government after a tight election in 2010, could have set the election date as late as November 30 under Australia's three-year election cycle.

But Shanahan said he thought she was also moving to head off any potential challenges to her position from within her party.

In the summer of 2010, Gillard replaced the prime minister at the time, Kevin Rudd, whose ratings were suffering after he placed his proposed carbon emissions trading plan on the back burner and introduced a hefty tax on the country's powerful mining industry.

Tensions remained in the party over her ascension to the prime minister's office, with some calling it a palace coup. Rudd unsuccessfully challenged her leadership last year.

Under Gillard's announcement Wednesday, the House of Representatives will be dissolved on August 12.

The elections will involve the entire House of Representatives and half the Senate.