Sparks have flown in the final hours of the NSW election campaign over potential changes to a $5 billion infrastructure fund serving key marginal electorates in western Sydney.
Both parties locked horns on Friday over whose plan was best for the billions of dollars remaining in the WestInvest fund, from the sale of the WestConnex toll road.
Penrith MP Stuart Ayres warned Labor would cut community sport facilities while Labor leader Chris Minns insisted health infrastructure was his priority.
Meanwhile, the independent Parliamentary Budget Office (PBO) stepped in on Friday afternoon to "correct a misrepresentation" by the Liberal Party of its costings.
The NSW Liberals claimed the PBO's costings showed Labor had cut more than $2 billion from the WestInvest Fund based on its decision to not follow through with coalition's promises.
"The PBO has pointed out to the Liberal Party that a government announcement is not a legally binding commitment," the budget office said on Friday.
"None of this makes it accurate to say, 'Labor (has) cut more than $2 billion from the WestInvest Fund'.
"To state the fund would be cut is a misrepresentation. The ALP's proposals would mean a reallocation of priorities within WestInvest, not a cut to the fund."
The Liberal Party said the PBO had confirmed Labor had to discontinue, change timing or alter the scope of projects that have been announced and committed to be funded from WestInvest in order to fund their election commitments.
"Only the Liberals will deliver the vital infrastructure Western Sydney needs," a party spokesman said.
Mr Ayres, fighting to retain his Penrith in outer western Sydney, said Labor couldn't pay for its election promises and would take away the facilities that meant so much to western communities.
"If you're going to vote this Saturday, if you're a member of a community club that's going to benefit from a WestInvest project, you only have one choice," he said from a basketball centre promised 10 new courts.
The PBO costings show Labor wants to offset more than $3.5b in projects with WestInvest funds, including $1.3b for rapid buses to Western Sydney Airport and $1.4b for new and improved western Sydney hospitals.
"It's a difference of opinion, a competition between the parties, if you like," Mr Minns said.
"Over the past six years, the NSW government's withdrawn 365 beds from hospital bed capacity in NSW."
The Labor leader declined to nominate which coalition projects he would ditch.
As the main area where Labor and Liberal seats clash, western Sydney hosted both leaders on Friday as they made their final pitches to voters.
Premier Dominic Perrottet said, "Vote one for your local Liberal candidate and back our plan to keep NSW moving forward to protect you and your family."
Mr Minns, said, "Schools and hospitals won't turn around unless there's a change of government."
In Liberal-held Holsworthy, where Mr Perrottet greeted voters alongside new candidate Tina Ayyad, mother of four Mary said surging financial pressure was front of mind to her.
"Cost of living is very important to me in a family of six," she told AAP.
She said council rates and schooling her children put her under pressure.
While not revealing who she voted for, Mary said she wanted a trustworthy candidate who cared about local issues like neglected parks and dumped waste.
