A Fairfax Media MIA poll has revealed that over 81 per cent of those who responded would vote for a Shooters, Fishers and Farmers candidate, while only 12 per cent would stick with the Nationals.
The poll had over 1000 responses, one of the highest response rates ever for an Fairfax MIA survey.
Just over seven per cent of those surveyed said that they would vote for someone else.
The results come ahead of the Murray and Cootamundra by-elections, set for October 14.
Murray has been a Nationals safe seat since 1984 when it went by the name Murrumbidgee.
Adrian Piccoli won the seat in 2015 with over 55.5 per cent of the overall vote.
In the 2016 Orange by-election, Shooters, Fishers and Farmers shocked the Nationals by taking a large chunk of the vote in a traditionally safe seat.
The result saw a 34 per cent swing against the Nationals in the primary vote and a two-candidate-preferred swing of nearly 22 per cent.
The Nationals, Shooters, Fishers and Farmers, Labor and the Greens have all confirmed that they will be putting forward people to run.
While the parties are yet to announce their candidates for Murray, Deputy Premier John Barilaro said Mr Piccoli’s resignation provided the opportunity to bring in new blood.
“This opportunity presents us with a great chance to identify and develop fresh, new talent for the NSW Nationals,” he said.
"It's an opportunity for renewal.”
Member for the NSW Legislative Council Robert Borsak said that he saw the potential for an SFF win.
“Unlike the National Party, we don’t take an election win as a certainty. Our information shows that a by-election in Murray will be a close contest between the Shooters, Fishers and Farmers Party and the National Party.”
Mr Borsak also condemned the by-election’s $720,000 price tag.
“The money that the Murray by-election will cost the taxpayer should have been put into vital rural services,” he said.
The party have also set their sights on the Cootamundra by-election, pre-selecting small local business owner Matthew Stadtmiller.
Cootamundra was forced into a by-election following the retirement of Nationals MP Katrina Hodgkinson,
The parties will have until September 25 to nominate their candidates.