There's a good reason the Shooters, Fishers and Farmers Party will not replicate its NSW election successes at next month's federal vote — it has no cash, and no candidates.

Just weeks ago the Shooters were feeling bullish about their chances of getting a foothold in Canberra, after riding a wave of voter discontent in the bush to victory in three state seats in western NSW.

With plans to capitalise on disillusionment with the Nationals and anger over water management issues, the party declared it "would give the federal election a shake".

Now NSW Shooters' leader Robert Borsak has confirmed it will only run one candidate in the federal election on May 18 — Orange councillor Sam Romano in the Nationals-held seat of Calare.

"In a perfect world if we had the resources and the right candidates we'd definitely be running in more seats, but there's no sugar-coating it, we don't have any of those," Mr Borsak said.

Orange councillor Sam Romano is contesting the federal seat of Calare. ( Orange City Council )

The venom directed at the Nationals at the NSW election remains, and with the Shooters now largely out of the picture, One Nation could benefit from the anger.

Internal Nationals polling indicates about 80 per cent of western NSW voters who have abandoned them at the state election would be likely to vote for Pauline Hanson's party federally if there was no Shooters candidate on the ballot.

But just days before nominations close for the federal election, One Nation is yet to declare candidates for federal seats that overlap with the areas where the Nationals took their biggest hits in the state election.

And senior Nationals sources say even if One Nation does field candidates in those seats, the swings wouldn't be enough to unseat incumbent MPs in those areas.

"Well take a haircut but we'll get there," one told the ABC.

Shooters to push for 2022

The Nationals are confident the personal popularity of Mark Coulton will be enough for him to hold the seat of Parkes, which overlaps with the state electorate of Barwon that was won by the Shooters.

Likewise, it believes that Andrew Gee will hold the seat of Calare, despite the Shooters running their only federal candidate in the seat.

But the party is concerned about the north coast seat of Cowper, where independent Rob Oakeshott is trying to revive his political career, and Page — which is a perennially close race with Labor for the Nationals.

Mr Borsak said the successful state election campaign had exhausted the party's coffers, but it will gear up to make a strategic push at the next federal election in three years' time.

"A party our size has to plan all our resources, save our money and get really good candidates who will have time to establish themselves with voters," he said.

In the meantime, voters keen to turn their back on the Nationals in NSW may be left without an obvious alternative on May 18.