Daniel Andrews' government has been rocked by a fresh round of factional infighting, with damaging leaks accusing the Premier of overseeing systemic rorts of taxpayer-funded electorate officers.

The revelations threaten the unity of the Labor government, already dealing with factional infighting in the wake of Adem Somyurek's dismissal.

Premier Daniel Andrews has denied rorting claims about the alleged misuse of taxpayers' money during the election campaign.

Three anonymous state Labor MPs have accused Mr Andrews' office of directing upper house MPs to pool electorate officer entitlements and use the staff to campaign at the election.

The news has left factional leaders trying to work out how to deal with disgruntled MPs within government ranks.