The NSW Shooters, Fishers and Farmers Party (SFF) says a swing against the Nationals in the bush is an issue of that party's own making after the state's regions were "abandoned and ignored".

Key points: The Shooters, Fishers and Farmers appear likely to add to their one Lower House seat

The Shooters, Fishers and Farmers appear likely to add to their one Lower House seat The party's candidate in Barwon polled well and said regional NSW had seen a "massive decline in quality of life"

The party's candidate in Barwon polled well and said regional NSW had seen a "massive decline in quality of life" Check the ABC's election page for live results

Both the Greens and SFF were on track to secure seats in the NSW Parliament, where Gladys Berejiklian's Coalition looks set to retain power but might require support from minor parties.

In the sprawling electorate of Barwon — which covers an enormous regional area that has endured water supply problems and mass fish kills in the lead-up to the election — SFF candidate Roy Butler looked like he could win on the back of a huge swing against the Nationals.

If he claims the seat, it will be the first time it has fallen to a candidate who is not from the Country/National party.

Mr Butler, a former alcohol and drug counsellor, said the backlash against the Nationals was "the price they pay for regional neglect".

The state's regions had experienced a "massive decline in quality of life", and were dealing with water supply problems and poor health services, he added.

"If we had the problems that are occurring out here in the city, people would be knocking down the door of their local member's office," Mr Butler said.

"It's totally unacceptable in 2019 to have some of these issues going on."

ABC elections analyst Antony Green called the result for the Coalition about 8:15pm, when over 16 per cent of the vote had been counted.

At that point, the first-preference vote for the Liberals and Nationals rose above 41 per cent, while the Labor vote sat at 33 per cent.

Green later said Labor's vote had not increased, denying the party any chance of securing the 47 seats it needed to form majority government in the Lower House.

The Government was likely to win 46 seats, however Green warned many were still considered in doubt and the final count may not be known for several days.

"It's been hard to follow, hard to work out what the trend was, and the trend has gone different ways," he said.

Minor parties could wield major power

The early count quickly brought promising news for the SFF.

SFF MP Philip Donato secured his seat of Orange, with Green describing it as an "easy" retain.

Mr Donato said he had endured a "steep learning curve" after coming from a police prosecutor background and winning the seat two years ago.

He said the regions had been missing out on "massive amounts of money" for infrastructure.

Shooters, Fishers and Farmers MP Philip Donato enjoyed an "easy" win in Orange. ( ABC News: Luke Wong )

"We want to make sure we receive our fair share," Mr Donato said.

"That's what we'll be pushing for as part of [minority government] negotiations if it comes to it."

The party was also looking likely to gain the seat of Murray off the Nationals.

Retiring Nationals MP and former police minister Troy Grant rejected criticism that the Government hadn't invested in the bush.

"We have had 50-odd hospitals built in regional New South Wales, we have had six health facilities in the Dubbo electorate," he said.

"We need to get better in communicating what we have done."

Independent Mathew Dickerson was posing a threat in Mr Grant's former seat of Dubbo.

Late on Saturday night, Nationals candidate Dugald Saunders was ahead with 50.6 per cent of the two-party preferred vote — representing a huge cut to the party's comfortable 20 per cent margin.

Greens likely to keep seats

Greens Senator Mehreen Faruqi (L) celebrates with re-elected NSW MPs Jenny Leong and Jamie Parker. ( Supplied )

In Sydney, Greens MP Jenny Leong retained her inner-city seat of Newtown.

With over half the votes counted, she enjoyed a swing of more than 5 per cent.

She had previously held the seat with a margin of 9.3 per cent.

"One thing is clear — everyone's talking about the need for action on climate change," Ms Leong said.

"It's pretty clear that the people of Newtown are saying that they want to see an end to coal fired power stations in this state."

The Greens were also set to retain the seats of Ballina and Balmain.