The prime minister won’t confirm or deny Malcolm Turnbull approved an $8 billion road and rail package to be rolled out across marginal seats as part of his re-election campaign.

The blueprint, leaked overnight, included a high speed rail link between Brisbane and Melbourne, and a north-south link in western Sydney.

Former prime minister Malcolm Turnbull's $7.6 billion road and rail election sweeteners have been revealed in a leaked list (AP Photo/Andrew Taylor, File)

The fact the plan was leaked, after the leadership change, is curious, and has some speculating it was made public to hamper Mr Morrison’s campaign bid.

It certainly take a major plank out of the prime minister’s election manifesto.

Mr Morrison wouldn’t comment on the massive infrastructure plan, saying only commitments from his government “will be made by me”.

Labor’s shadow minister, Anthony Albanese, said the leak showed the “on-going war between the Abbott and Dutton forces and Turnbull, Morrison forces just continues”.

“The only way to stamp it out is to go to an election,” Mr Albanese said.