The Berejiklian government is embroiled in a sporting grants slush fund controversy, with figures showing it splashed the bulk of its $33.4 million program on Liberal electorates.

In the months before last March's state election, Liberal MPs and candidates announced more than $25 million in grants, amounting to 75 per cent of the funding pool issued through the Greater Sydney Sports Facility Fund.

Ahead of the March 2019 state election, Liberal MPs and candidates announced more than $25 million in sporting grants, established by the Berejiklian government. Credit:AAP

It comes as the Morrison government seeks to downplay allegations it used its $100 million community sports program to bolster its re-election campaign, after the National Audit Office found almost half the successful projects were in marginal federal seats.

Under the NSW program, some Liberal electorates had several projects funded, while large local government areas in Labor-held areas of western Sydney received nothing.