Rome, January 12 - Premier Matteo Renzi praised Roberto Giachetti, an MP with his Democratic Party (PD), ahead of primaries to select the centre-left's mayor candidate in local elections in Rome later this year. "The primaries will decide, but Giachetti is certainly someone who knows Rome like few others, he's even been head of the city cabinet (under former mayor Francesco Rutelli)," Renzi told Repubblica TV. "He is a Roman and an AS Roma supporter. We'll see if he stands". Rome is currently being run by an extraordinary commissioner, Francesco Paolo Tronca, after former PD Mayor Ignazio Marino was forced out last year following an expenses scandal.