The federal Liberal Party machine must transform itself and modernise to take on the "cashed up cabal" of Labor, the Greens, unions and GetUp, according to outgoing acting director Andrew Bragg.

In a strongly-worded speech to be delivered to the party's Federal Council on Saturday, Mr Bragg will say the Liberal Party's opponents "are formidable but beatable. Beat them we must for they want to radically change Australia".

Acting Liberal party director Andrew Bragg delivered a strong final speech as acting Liberal Party director.

"The Liberal Party must commit to a broad reform and modernisation agenda to win elections in a campaign landscape which is unrecognisable from just a decade ago," he will say.

He will point to research that showed more than $300 million had been spent in the last financial year by the "anti-Liberal, anti-freedom, anti-business cabal" - including unions, Labor and GetUp - whereas pro-Liberal groups had spent just $120 million.