The final result was decided on Monday, following a recount conducted at the request of the NSW Nationals on Friday night.

The final result saw a record 34 per cent swing against the Nationals on primary votes and a two-candidate-preferred swing of 21.8 per cent.

Orange is now held by the Shooters, Fishers and Farmers by just 0.1 per cent, making it the most marginal seat in NSW.

“I'm humbled and deeply honoured by the support I've received and the trust the community has placed in me,” Mr Donato told the Central Western Daily.

"I will work hard as I can to represent the whole electorate and obtain the trust of those who voted and didn't vote for me."

VIDEO: Philip Donato speaks to the media on Monday afternoon:

The byelection was prompted by Nationals MP Andrew Gee's successful move to the seat of Calare at the July federal election.

The result led to Police Minister Troy Grant resigning as deputy premier and leader of the NSW Nationals and his deputy, Education Minister Adrian Piccoli, not recontesting his position.

Skills Minister John Barilaro was elected leader of the Nationals and sworn in as Deputy Premier, while Primary Industries Minister Niall Blair became his deputy.

There has been speculation about the reason for the result, including that it was a backlash to the bungled attempt to shut down the greyhound racing industry, a reaction to forced council amalgamations and local job losses.

On Thursday, Mr Piccoli lashed out at the Labor Party for its decision to direct preferences to the Shooters, Fishers and Farmers in Orange.

In extraordinary scenes, Mr Piccoli feigned shooting members of the opposition front bench to make a point that Labor had helped elect a party that wants to repeal national firearms laws.

Mr Piccoli's future is up in the air before a cabinet reshuffle.

Premier Mike Baird has said a reshuffle will not occur until early next year, but it is understood Mr Barilaro is pushing for it to happen before Christmas.