Democratic Party leader Enrico Letta poses with supporters at a polling station during the snap election, in Rome, Italy, September 25, 2022. REUTERS/Guglielmo Mangiapane 

Democratic Party leader Enrico Letta gestures at a polling station during the snap election, in Rome, Italy, September 25, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), speaks during the electoral campaign closing event, at Piazza del Popolo, ahead of the general election, in Rome, Italy September 23, 2022. REUTERS/Stoyan Nenov 

Enrico Letta, secretary of the centre-left Democratic Party (PD), speaks during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), gestures during the electoral campaign closing event, at Piazza del Popolo, ahead of the general election, in Rome, Italy September 23, 2022. REUTERS/Stoyan Nenov 

Enrico Letta, secretary of the centre-left Democratic Party (PD), speaks during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

A party flag covers the scene as Enrico Letta, secretary of the centre-left Democratic Party (PD), gestures during the electoral campaign closing event, at Piazza del Popolo, ahead of the general election, in Rome, Italy September 23, 2022. REUTERS/Stoyan Nenov 

Enrico Letta, secretary of the centre-left Democratic Party (PD), looks on during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), gestures during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), speaks during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), speaks during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), gestures during the electoral campaign closing event, at Piazza del Popolo, ahead of the general election, in Rome, Italy September 23, 2022. REUTERS/Stoyan Nenov 

Enrico Letta, secretary of the centre-left Democratic Party (PD), gestures during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), gestures during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), speaks during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), gestures during the electoral campaign closing event, at Piazza del Popolo, ahead of the general election, in Rome, Italy September 23, 2022. REUTERS/Stoyan Nenov 

Enrico Letta, secretary of the centre-left Democratic Party (PD), gestures during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), speaks during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), speaks during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), speaks during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), gestures during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), gestures during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Centre-left Democratic Party (PD) supporters gather during the electoral campaign closing event of Enrico Letta, secretary of PD, in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), reacts during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), greets his supporters during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), waves during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), waves during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), reacts during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), waves during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Enrico Letta, secretary of the centre-left Democratic Party (PD), waves during the closing event of his electoral campaign in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Centre-left Democratic Party (PD) supporters gather before the electoral campaign closing event of Enrico Letta, secretary of PD, in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane TPX IMAGES OF THE DAY 

Centre-left Democratic Party (PD) supporters gather before the electoral campaign closing event of Enrico Letta, secretary of PD, in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Centre-left Democratic Party (PD) supporters gather before the electoral campaign closing event of Enrico Letta, secretary of PD, in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

Centre-left Democratic Party (PD) supporters gather before the electoral campaign closing event of Enrico Letta, secretary of PD, in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Guglielmo Mangiapane 

A supporter of Enrico Letta, the secretary of the centre-left Democratic Party (PD), holds a European Union flag before Letta’s electoral campaign closing event in Piazza del Popolo, ahead of the general election, in Rome, Italy, September 23, 2022. REUTERS/Stoyan Nenov 

An election campaign poster of Enrico Letta, the head of the centre-left Democratic Party (PD), is displayed on a bus ahead of the snap election of September 25, in Rome, Italy September 20, 2022. REUTERS/Yara Nardi 

A combination of file pictures shows leaders of Italian political parties, top: Enrico Letta, head of the centre-left Democratic Party (PD); Matteo Salvini, leader of far-right League party; Carlo Calenda, leader of centre Azione party; bottom: Silvio Berlusconi, leader of the Forza Italia party; Giorgia Meloni, leader of far-right Fratelli d'Italia party; Giuseppe Conte, leader of 5-Star Movement party. Italy will face parliamentary election on September 25, 2022. REUTERS/Remo Casilli/Alberto Lingria/Massimo Pinca/Tony Gentile 

Enrico Letta, the head of the centre-left Democratic Party (PD), poses for photographer at the end of an interview with Reuters about the forthcoming national election that was called after the surprise collapse of Mario Draghi's unity government, in Rome, Italy, July 25, 2022. REUTERS/Remo Casilli 

Enrico Letta, the head of the centre-left Democratic Party (PD), arrives for an interview with Reuters about the forthcoming national election that was called after the surprise collapse of Mario Draghi's unity government, in Rome, Italy, July 25, 2022. REUTERS/Remo Casilli 

Enrico Letta, the head of the centre-left Democratic Party (PD), smiles during an interview with Reuters about the forthcoming national election that was called after the surprise collapse of Mario Draghi's unity government, in Rome, Italy, July 25, 2022. REUTERS/Remo Casilli 

Enrico Letta, the head of the centre-left Democratic Party (PD), gestures during an interview with Reuters about the forthcoming national election that was called after the surprise collapse of Mario Draghi's unity government, in Rome, Italy, July 25, 2022. REUTERS/Remo Casilli 

Enrico Letta, the head of the centre-left Democratic Party (PD), looks on during an interview with Reuters about the forthcoming national election that was called after the surprise collapse of Mario Draghi's unity government, in Rome, Italy, July 25, 2022. REUTERS/Remo Casilli 

Enrico Letta, the head of the centre-left Democratic Party (PD), gestures during an interview with Reuters about the forthcoming national election that was called after the surprise collapse of Mario Draghi's unity government, in Rome, Italy, July 25, 2022. REUTERS/Remo Casilli 

Enrico Letta, the head of the centre-left Democratic Party (PD), gestures during an interview with Reuters about the forthcoming national election that was called after the surprise collapse of Mario Draghi's unity government, in Rome, Italy, July 25, 2022. REUTERS/Remo Casilli 

Enrico Letta, the head of the centre-left Democratic Party (PD), gestures during an interview with Reuters about the forthcoming national election that was called after the surprise collapse of Mario Draghi's unity government, in Rome, Italy, July 25, 2022. REUTERS/Remo Casilli 

Enrico Letta, the head of the centre-left Democratic Party (PD), gestures during an interview with Reuters about the forthcoming national election that was called after the surprise collapse of Mario Draghi's unity government, in Rome, Italy, July 25, 2022. REUTERS/Remo Casilli 

Lawmakers and Democratic Party leader Enrico Letta applaud during the swearing-in ceremony of the Italian President Sergio Mattarella in the parliament at the Montecitorio Palace in Rome, Italy February 3, 2022. Filippo Monteforte/Pool via REUTERS REFILE - CORRECTING MONTH 

Democratic Party's leader Enrico Letta poses with fellow lawmakers after Sergio Mattarella is re-elected as Italy's president at the end of the eighth round of voting, at the Italian parliament in Rome, Italy January 29, 2022. Gregorio Borgia/Pool via REUTERS 

Democratic Party's leader Enrico Letta and other lawmakers cheer at Pier Ferdinando Casini, who has been on the roster of possible candidates, after Sergio Mattarella is re-elected as Italy's president at the end of the eighth round of voting, at the Italian parliament in Rome, Italy January 29, 2022. Gregorio Borgia/Pool via REUTERS 

Democratic Party leader Enrico Letta and fellow lawmakers celebrate after Sergio Mattarella is re-elected as Italy's President at the end of the eighth round of voting, at the Italian parliament in Rome, Italy January 29, 2022. Gregorio Borgia/Pool via REUTERS 

Democratic Party (PD) leader Enrico Letta attends the third day of voting to elect the country's new president, in Rome, Italy, January 26, 2022. Alberto Pizzoli/Pool via REUTERS 

Democratic Party (PD) leader Enrico Letta walks past Fratelli d'Italia (Brothers of Italy) party leader Giorgia Meloni during the third day of voting to elect the country's new president, in Rome, Italy, January 26, 2022. Alberto Pizzoli/Pool via REUTERS 

Democratic Party (PD) leader Enrico Letta walks past Fratelli d'Italia (Brothers of Italy) party leader Giorgia Meloni during the third day of voting to elect the country's new president, in Rome, Italy, January 26, 2022. Alberto Pizzoli/Pool via REUTERS 

Democratic Party (PD) leader Enrico Letta walks past Fratelli d'Italia (Brothers of Italy) party leader Giorgia Meloni during the third day of voting to elect the country's new president, in Rome, Italy, January 26, 2022. Alberto Pizzoli/Pool via REUTERS 

Democratic Party’s leader Enrico Letta leaves after casting his ballot in the Italian parliament, during a voting session for the election of Italy’s 13th president in Rome, Italy, January 25, 2022. Alessandra Tarantino/Pool via REUTERS 

Democratic Party’s leader Enrico Letta casts his ballot in the Italian parliament, during a voting session for the election of Italy’s 13th president in Rome, Italy, January 25, 2022. Alessandra Tarantino/Pool via REUTERS 

Democratic Party (PD) leader Enrico Letta casts a vote at the Chamber of Deputies to elect the country's new president in Rome, Italy, January 24, 2022. REUTERS/Yara Nardi/Pool 

Democratic Party (PD) leader Enrico Letta looks on during a voting session at the Chamber of Deputies to elect the country's new president in Rome, Italy, January 24, 2022. REUTERS/Yara Nardi/Pool 

Democratic Party (PD) leader Enrico Letta attends a voting session at the Chamber of Deputies to elect the country's new president in Rome, Italy, January 24, 2022. REUTERS/Yara Nardi/Pool 

Democratic Party (PD) leader Enrico Letta casts a vote at the Chamber of Deputies to elect the country's new president in Rome, Italy, January 24, 2022. REUTERS/Yara Nardi/Pool