One Nation has clinched three seats and might nab a fourth in the South Australian lower house as the final votes are counted.

One Nation’s Chantelle Thomas had a slender 25-vote lead over Liberal Tania Stock in the rural Yorke Peninsula seat of Narungga on Monday.

It is the last seat to be declared in the SA lower house after the March 21 election.

Thomas – 30-year-old photographer and makeup artist – came out swinging in the seat, picking up 37.6 per cent of the primary vote, according to the Electoral Commission of SA.

But Stock – a former Yorke Peninsula Council deputy mayor – was closing in after picking up 51.6 per cent of postal votes. Preferences are also flowing her way.

One of the women will succeed former Liberal-turned-independent Fraser Ellis in the regional seat. He was disendorsed after he was charged with misusing parliamentary funds.

Ellis claimed 17.4 per cent of the primary vote, according to ECSA, not enough to be in the top two. ECSA continued to distribute preferences in Narungga on Monday.

The Liberals have held on to the seat of Heysen, but lost one of their last metropolitan fronts in Morphett at the weekend.

That means the Liberals can officially claim opposition status with five seats in the lower house: The metropolitan seat of Bragg and regional seats Heysen, Schubert, Flinders and Chaffey.

One Nation has secured three, with the possible gain of Narungga still leaving it behind the Liberals.

In the regional seat of MacKillop on Monday morning, the Liberals’ Rebekah Rosser conceded to One Nation challenger Jason Virgo – a Mount Gambier councillor. One Nation called the result “seismic”, given the rural seat was previously a Liberal stronghold.

Earlier, Adelaide Plains deputy mayor David Paton won Ngadjuri for One Nation, while craft distiller Robert Roylance is party’s the new MP in Hammond.

“We were told by many that we had no hope of getting one [seat],” One Nation said. “Despite the electoral system, the mood for change is so strong that we cannot be stopped.”

Virgo picked up 35.5 per cent of first-preference vote in MacKillop, which was previously held by former Liberal MP Nick McBride. He wears an ankle bracelet after being charged over the alleged assault of his wife, which he denies.

Rosser said she called Virgo on Monday to concede.

“At our core, we all want the same things for MacKillop; better health services, cheaper power and investment beyond the tollgate,” she said.

Meanwhile, Labor has claimed the blue-ribbon Adelaide seat of Morphett for teacher Toby Priest. He has a 290-vote lead over Liberal Stephen Patterson. It is the first time Morphett has changed hands in 47 years.

Priest said he was “deeply honoured” to be elected in the landslide that has given Labor 34 out of 47 seats in the House of Assembly.

Patterson – who held the seat for eight years – said in a post to social media that he was looking forward to spending more time with family and would remain active in the community, “starting with a lifesaving patrol at Glenelg beach this weekend”.

In the Adelaide Hills seat of Heysen, deputy Liberal leader Josh Teague has held on. He has a 266-vote lead over Labor’s Marissa Bell.

Liberal leader Ashton Hurn said she was “stoked” that Teague had been returned to parliament.

“We’ve been sent a message by South Australians and we do need to pull our socks up and that’s exactly what we’ll be doing,” Hurn said.

Republished from InDaily