Labor will revisit its painful election loss with a no-holds-barred review that will include "anti-Labor campaign methods", where former leader Bill Shorten travelled and the seats it targeted to win.

The post-mortem, headed by former South Australian premier Jay Weatherill and former minister Craig Emerson, will also examine how the party selected its candidates, the timing of election announcements and an in-depth statistical analysis of how Australians voted.

Noah Carroll will step down as the Labor Party's national secretary. Credit:Alex Ellinghausen

As the ALP grapples with the May 18 result, its top federal official, Noah Carroll, told the party's national executive on Friday that he would step down as national secretary. Mr Carroll, who took up the job in 2016, was widely tipped to leave the role following Labor's surprise loss.

Almost as soon as the Coalition claimed victory, Mr Carroll was being blamed for the party's reliance on polling that suggested Labor would comfortably win. He was also criticised for failing to counteract the Coalition's attack on Labor's franking credit policy.