Panel chair Barbara Floridia said it was “wholly inconceivable” that Rai news programmes had ignored the shock left-wing victory in their lead items.
She said she had requested an “urgent and detailed” report on the “hole” in Rai’s coverage from CEO Roberto Sergio.
Floridia belongs to the leftist populist opposition 5-Star Movement.
Italy’s opposition parties have alleged a government takeover of Rai, while the broadcaster’s internal union has said it has become the government’s mouthpiece.
Giorgia Meloni has said the government is “duly rebalancing” the broadcaster after decades of alleged liberal hegemony.
ANSA