Letta set to resign, Renzi waiting for call
Napolitano may start consulting parties Friday evening14 February, 10:30
The head of State will hold talks with all political parties, which may begin as early as Friday evening, before deciding how to proceed.
Napolitano is expected to hand a mandate to form a government to Renzi, the dynamic mayor of Florence who at 39 could become Italy's youngest premier.
"This is one of the best moments in my life," Renzi told reporters at a Florence ceremony with couples marking 50 years of marriage.
Renzi has said he wants the next government to last until the end of the parliamentary term in 2018, giving it time to enact a sweeping agenda to change a discredited and dysfunctional political system and deliver growth to lower record unemployment.