Deputy Prime Minister Michael McCormack will focus on lower taxes, regional infrastructure and border protection to win over country voters.
The Nationals leader kicked off the junior coalition partner's official election campaign - nicknamed the "Wombat Trail" - in Wagga Wagga on Thursday after Prime Minister Scott Morrison confirmed a May 18 poll.
Mr McCormack said the Nationals would campaign on their record of delivery in government over the last five-and-a-half years.
"A re-elected coalition government on May 18 stands for lower taxes, more infrastructure and national security," he told reporters on Thursday.
It is understood water infrastructure including dams will also form a key plank of the Nationals' agenda during the five-week campaign.
Mr McCormack also took aim at Opposition Leader Bill Shorten, arguing a Labor government would be led by Australian Council of Trade Unions secretary Sally McManus.
"We have Bill Shorten being led by the union movement," the Nationals leader said.
"He doesn't care about the regions. Never has. Doesn't now, never will."
If the Nationals cop heavy losses in the bush, Mr McCormack's leadership could be in serious trouble.
But he's not entertaining the possibility of losing his job.
"I don't intend to lose and I don't intend for the Nationals not to be in government. It's a hypothetical question," he said.
"If Winx doesn't win on Saturday well, it will be a real tragedy for racing too, but I'm not expecting her to lose either."
The coalition has consistently lagged behind Labor in opinion polls, putting the government on track to lose the election.
But Mr McCormack pointed to the election of US President Donald Trump, the Brexit referendum and Liberal state government victories in South Australia and Tasmania as evidence polls could be wrong.
"Only one opinion poll that matters and that's the ballot boxes," he said.
Mr McCormack will travel to Victoria on Thursday to campaign with Nationals MP Damian Drum in his seat of Murray, which will be renamed Nicholls.
