(see related stories) Rome, April 24 - Deputy Secretary Enrico Letta will get "convinced" support from his division-ridden Democratic Party after being given a mandate to form a new government from Italian President Giorgio Napolitano on Wednesday. There are fears internal rifts within the PD will mean the broad coalition government Letta will try to form will be weak and short-lived if it ever comes to life. Pier Luigi Bersani quit as PD leader at the weekend after two candidates he proposed to be Italy's president, former Senate Speaker Franco Marini and former premier Romano Prodi, were scuppered by internal party revolts. "The mandate given to Enrico Letta hands the PD a great responsibility," the centre-left party's House whip Roberto Speranza said. "It is necessary to give the country a government capable of resolving the great national emergencies". The PD's Senate whip echoed those sentiments. "Enrico Letta has the personality, political, balance, competence and experience to govern Italy for the best," said Luigi Zanda. "He has a personality that unites and it creates cohesion within the PD too. "The Democratic Party will support the executive that Enrico Letta will lead with conviction".