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A man has been shot by police after officers were called to a domestic violence incident in Queensland's far north.

Police attended an address on Love Street, Mareeba, about 11.30am on Saturday following reports a man had threatened self-harm.

Police said negotiators spoke with the man who allegedly had a woman with him and refused to let her leave.

About 3.30pm, the man allegedly advanced on specialist officers while armed with a knife.

Police shot the man.

Immediate first aid and CPR was provided but the man died at the scene.

A crime scene has been declared and police investigations are continuing.

Circumstances surrounding the incident will be investigated by the Ethical Standards Command on behalf of the State Coroner.

The investigation will be subject to oversight by the Crime and Corruption Commission.

© AAP 2023

Outgoing NSW Premier Dominic Perrottet says Labor's Chris Minns will make a fine replacement, as he announced he would stepped down as leader of the Liberal Party.

Labor is tipped to gain the 47 seats it needs to govern in its own right, with the ABC predicting as many as 50 seats going to Labor.

Mr Perrottet said as leader of the parliamentary Liberal Party he took full responsibility for the loss.

"And, as a result I will be standing down as the Parliamentary Liberal Party."

It was clear the party needed a fresh start, Mr Perrottet said, quoting the Labor Party's slogan.

"It is very clear we need a fresh start, we need a fresh start."

Mr Perrottet conceded defeat in a phone call to Mr Minns about 9pm on Saturday.

An early two-party preferred swing of about 6.4 per cent led to decisive calls by analysts on Saturday night.

In his concession speech in Sydney's CBD where Liberal party faithful gathered Mr Perrottet said while elections could get ugly he believed the election was truly a race to the top.

"A genuine, a genuine battle of ideas, and that is when politics is at its best," Mr Perrottet said.

"In many ways, that is due to Chris Minns and of the way that he has carried himself throughout this campaign.

"And that is why I truly believe and have no doubt that he will make a fine 47th premier of NSW I believe he will lead with the same decency and the same integrity that he has led with so far."

The outgoing premier urged everybody across the state to get behind Mr Minns for the sake of the country.

"And ultimately, I ask everybody across NSW, whatever your political persuasion, to get behind him, to get behind him because when New South Wales goes well, our country goes well, and that is something tonight I believe we can all unite behind."

Mr Perrottet, who became premier 18 months ago after Gladys Berejiklian quit amid an ICAC probe, had sought a fourth term for the coalition.

Deputy Labor leader Prue Car said the party had struck a chord with the people of NSW.

"We made a case for change, and we have made the case for change as a team that has done the work," Ms Car told the ABC.

"The campaign, thus far, is showing that we really were listening to people, and talking about the bread-and-butter issues that people are concerned about.

Treasurer Matt Kean said he was not surprised by the result, saying after 12 years of coalition government people were looking for change.

"We we were hoping for the best and preparing for the worst," he said.

The coalition governed for two years in minority with 46 seats, while Labor held 38 seats, with nine crossbenchers, including three Greens MPs.

Both leaders have campaigned hard in vital seats in Sydney's west, where a third of NSW voters live and many electorates are on a knife edge.

Mr Perrottet was flanked by wife Helen as he voted in Beecroft in Sydney's north on Saturday and she was again a fixture as he conceded publicly.

Mr Minns voted in his ultra-marginal southern Sydney seat of Kogarah, flanked by wife Anna and their three sons, and promising a fresh vision for the state.

"Vote for a fresh start for NSW, for a team that's got a plan for essential services, for our schools and for our hospitals, who's going to stand up against privatisation and really put the people of NSW first," he said.

Earlier on Saturday Prime Minister Anthony Albanese lent his support to Mr Minns' pitch for premier, campaigning in the Liberal-held seat of Ryde before casting his own vote at a booth in Sydney's innerwest.

A string of retiring senior Liberal ministers bailing out before the state election showed the Perrottet government didn't even have confidence in itself, he said.

© AAP 2023

Polling booths have closed in NSW after a gruelling election campaign as the wait begins to find out whether the Liberal-National coalition has been returned to government or if Labor has ended its 12-year stretch in opposition.

Premier Dominic Perrottet is seeking a fourth term for the coalition, while Labor leader Chris Minns wants to end Labor's 12 years in the political wilderness.

Labor is favoured to secure a tight victory, leading the polls but there is a strong possibility the election could deliver a hung parliament.

With 93 seats up for grabs, whichever side can secure 47 will be able to form a majority 58th NSW government.

The coalition has governed for two years in minority and has 46 seats, while Labor has 38, with nine crossbenchers, including three Greens MPs.

If Labor wins six seats it could govern with support of the the Greens if it agrees to no more coal or gas projects, an end to logging in native forest and mandatory cashless gaming.

The leaders have led the charge on the campaign trail this week, visiting dozens of electorates in a frenzied blitz to shore up seats across the state.

The premier voted in Beecroft on Saturday morning, accompanied by wife Helen and daughter Celeste, as school volunteers sold cupcakes and sausages to punters.

"It's a very important day for the future of our state. There's a lot at stake", Mr Perrottet said.

"It's my team that has the plan to dealt with the current challenges."

Mr Minns voted in his ultra-marginal southern Sydney seat of Kogarah, flanked by wife Anna and their three sons, and promising a fresh vision for the state.

"Vote for a fresh start for NSW, for a team that's got a plan for essential services, for our schools and for our hospitals, who's going to stand up against privatisation and really put the people of NSW first," he said.

Both leaders have campaigned hard in vital seats in Sydney's west, where a third of NSW voters live and many electorates are on a knife edge.

The latest Newspoll showed Labor leading the coalition 54.5 to 45.5 on a two-party preferred basis, putting Labor on a path to claim the 10 seats it needs to form majority government.

Former NSW Labor premier Morris Iemma told the Nine Network he was "cautious but optimistic" about a Labor victory.

Former Labor NSW deputy premier Carmel Tebbutt said Labor had "a mountain to climb" to win.

Earlier on Saturday Prime Minister Anthony Albanese lent his support to Mr Minns' pitch for premier, campaigning in the Liberal-held seat of Ryde before casting his own vote at a booth in Sydney's innerwest.

A string of retiring senior Liberal ministers bailing out before the state election showed the Perrottet government didn't even have confidence in itself, he said.

"It's time for a change of government," he told reporters.

Former NSW Liberal minister Andrew Constance predicted it would be the night of the cross bench.

"We're going to see the largest crossbench I think, elected in the state's history tonight," he told Nine.

A raft of minor party and independent candidates could make the difference in the event of a minority government, with the Greens and teals vowing to hold the government to account on climate and other reforms.

Kingmaker Alex Greenwich, who is looking to win again as an independent in the seat of Sydney, said there had been a trend away from the major parties towards smaller parties and independents.

Sidestepping the question of who he would support in the case of a hung parliament, Mr Greenwich said it would be incumbent on the crossbench to provide the next government with stability.

© AAP 2023