Movimento Cinque Stelle

MIllenial challenges Matteo Renzi

Luigi di Maio at the Senate

Luigi di Maio at the Senate

MILAN — Luigi Di Maio is a young man in a hurry: The 29-year-old wants to turn Italy’s 5-Star Movement into a grown-up party that can challenge Matteo Renzi’s Democratic Party (PD) on the national stage, if it can first prove its mettle in local elections in Rome and Naples.