Ahead of the NSW election on March 25, Labor Leader Chris Minns will speak to a crowd of party faithful in the battleground seat of Penrith on Sunday, at NSW Labor's unofficial campaign launch.
The rally will take place in the key western Sydney seat of Penrith, currently held by Liberal MP Stuart Ayres on a margin of 1.3 per cent.
It comes after a difficult few days for the government, including the release of a scathing auditor-general's report criticising its handling of a bushfire recovery grants scheme.
The scheme saw former deputy premier John Barilaro's office interfering to effectively exclude Labor-held electorates from receiving funds, the auditor-general found.
Mr Minns said emergency funds should not be handed out with people's political preferences in mind.
"I would have thought common decency would have stepped in long ago and no government would manipulate a process to see a community recover," he said.
"Unfortunately, that's what happens when a group of people have been in power for 12 years."
Premier Dominic Perrottet said he would consider possible improvements in light of the report, but denied the funding arrangements were pork barrelling.
Labor will hold a formal campaign launch two weeks out from polling day.