# Legislature XV of Italy

The Legislature XV of Italy (Italian: XV Legislatura della Repubblica Italiana) started on 28 April 2006 and ended on 28 April 2008. Its composition resulted from the election of 9–10 April 2006, called after President Ciampi dissolved the houses on 11 February 2006, at the end of the previous legislature. This legislature was the second shortest in the history of the Italian Republic, lasting exactly two years, and ending when President Giorgio Napolitano dissolved the houses on 6 February 2008, after a vote of no confidence on the incumbent Prodi Cabinet.
The election was the first one with the new preferential block electoral system (also known as Porcellum) introduced by Roberto Calderoli in 2005, and later declared partially unconstitutional by the Constitutional Court.

## Government

| Prime Minister | Prime Minister | Prime Minister | Party | Term of office | Term of office | Government | Composition |
| Prime Minister | Prime Minister | Prime Minister | Party | Took office | Left office | Government | Composition |
| | | Romano Prodi (b. 1939) | Independent | 17 May 2006 | 8 May 2008 | Prodi II | DS • DL • PRC • RnP • PdCI • IdV • FdV • UDEUR (The Union) |

## Composition
### Chamber of Deputies

The number of elected deputies is 630.
* President: Fausto Bertinotti (PRC), elected on 29 April 2006
* Vice Presidents: Pierluigi Castagnetti (L'Ulivo, then PD), Carlo Leoni (L'Ulivo, then SD), Giulio Tremonti (FI), Giorgia Meloni (AN)
Parliamentary groups in the Chamber of Deputies :
| Initial composition | Initial composition | Initial composition | Initial composition | Final composition | Final composition | Final composition | Final composition | Final composition |
| Parliamentary group | Parliamentary group | Parliamentary group | Seats | Parliamentary group | Parliamentary group | Parliamentary group | Seats | Change |
| | The Olive Tree | The Olive Tree | 218 | | Democratic Party – The Olive Tree | Democratic Party – The Olive Tree | 194 | 24 |
| | Forza Italia | Forza Italia | 134 | | Forza Italia | Forza Italia | 131 | 3 |
| | National Alliance | National Alliance | 72 | | National Alliance | National Alliance | 68 | 4 |
| | Communist Refoundation – European Left | Communist Refoundation – European Left | 41 | | Communist Refoundation – European Left | Communist Refoundation – European Left | 40 | 1 |
| | UDC (CCD – CDU) | UDC (CCD – CDU) | 39 | | UDC (Union of Christian and Centre Democrats) | UDC (Union of Christian and Centre Democrats) | 36 | 3 |
| | Lega Nord Padania | Lega Nord Padania | 23 | | Lega Nord Padania | Lega Nord Padania | 22 | 1 |
| | Italy of Values | Italy of Values | 20 | | Italy of Values | Italy of Values | 17 | 3 |
| | | | | | Socialists and Radicals – RnP | Socialists and Radicals – RnP | 21 | 21 |
| | | | | | Democratic Left. For European Socialism | Democratic Left. For European Socialism | 20 | 20 |
| | | | | | Italian Communists | Italian Communists | 17 | 17 |
| | | | | | Greens | Greens | 15 | 15 |
| | | | | | Populars – UDEUR | Populars – UDEUR | 11 | 11 |
| | | | | | DCA – Christian Democracy for Autonomies – New PSI | DCA – Christian Democracy for Autonomies – New PSI | 5 | 5 |
| | Mixed | Mixed | 83 | | Mixed | Mixed | 33 | 50 |
| | | Linguistic Minorities | 5 | | | Linguistic Minorities | 5 | |
| | | The Rose in the Fist | 18 | | | | | 18 |
| | | Italian Communists | 16 | | | | | 16 |
| | | Greens | 16 | | | | | 16 |
| | | Populars – UDEUR | 14 | | | | | 14 |
| | | Christian Democracy – Socialist Party | 6 | | | | | 6 |
| | | | | | | MpA – Movement for Autonomy | 6 | 6 |
| | | | | | | The Right | 4 | 4 |
| | | Non inscrits | 8 | | | Non inscrits | 18 | 10 |
| Total seats | Total seats | Total seats | 630 | Total seats | Total seats | Total seats | 630 | |

### Senate

The number of elected senators was 315. At the start of the Legislature the number of life senators was seven (Francesco Cossiga and Oscar Luigi Scalfaro as former Presidents, as well as nominated life senators Giulio Andreotti, Rita Levi-Montalcini, Emilio Colombo, Giorgio Napolitano, and Sergio Pininfarina). During the legislature Giorgio Napolitano was elected President, thus leaving his seat as life senator. Carlo Azeglio Ciampi became life senator on 15 May 2006 as the former President.
* President: Franco Marini (L'Ulivo, then PD), elected on 29 April 2006
* Vice Presidents: Gavino Angius (L'Ulivo, then SD), Roberto Calderoli (LN), Milziade Caprili (PRC), Mario Baccini (UdC)
Parliamentary groups in the Senate of the Republic :
| Initial composition | Initial composition | Initial composition | Initial composition | Final composition | Final composition | Final composition | Final composition | Final composition |
| Parliamentary group | Parliamentary group | Parliamentary group | Seats | Parliamentary group | Parliamentary group | Parliamentary group | Seats | Change |
| | The Olive Tree | The Olive Tree | 108 | | Democratic Party – The Olive Tree | Democratic Party – The Olive Tree | 84 | 24 |
| | Forza Italia | Forza Italia | 77 | | Forza Italia | Forza Italia | 73 | 4 |
| | National Alliance | National Alliance | 41 | | National Alliance | National Alliance | 37 | 4 |
| | Communist Refoundation – European Left | Communist Refoundation – European Left | 27 | | Communist Refoundation – European Left | Communist Refoundation – European Left | 26 | 1 |
| | Union of Christian and Centre Democrats (UDC) | Union of Christian and Centre Democrats (UDC) | 21 | | Union of Christian and Centre Democrats (UDC) | Union of Christian and Centre Democrats (UDC) | 18 | 3 |
| | Lega Nord Padania | Lega Nord Padania | 13 | | Lega Nord Padania | Lega Nord Padania | 12 | 1 |
| | Together with the Union Greens and Italian Communists | Together with the Union Greens and Italian Communists | 11 | | Together with the Union Greens and Italian Communists | Together with the Union Greens and Italian Communists | 10 | 1 |
| | | | | | Christian Democracy for Autonomies – Italian Republican Party – Movement for Autonomy | Christian Democracy for Autonomies – Italian Republican Party – Movement for Autonomy | 10 | 10 |
| | | | | | For the Autonomies | For the Autonomies | 10 | 10 |
| | | | | | Democratic Left for European Socialism | Democratic Left for European Socialism | 10 | 10 |
| | Mixed | Mixed | 24 | | Mixed | Mixed | 32 | 6 |
| | | Italy of Values | 5 | | | Italy of Values | 3 | 2 |
| | | Populars – UDEUR | 3 | | | Populars – UDEUR | 2 | 1 |
| | | Southern Democratic Party | 1 | | | Southern Democratic Party | 1 | |
| | | For the Autonomies | 4 | | | | | 4 |
| | | Christian Democracy for Autonomies | 2 | | | | | 2 |
| | | Movement for Autonomy | 2 | | | | | 2 |
| | | | | | | The Right | 3 | 3 |
| | | | | | | Socialist Party | 3 | 3 |
| | | | | | | Liberal Democrats Union | 3 | 3 |
| | | | | | | Democratic Union for Consumers | 2 | 2 |
| | | | | | | Italians in the World | 1 | 1 |
| | | | | | | Citizens' Political Movement | 1 | 1 |
| | | | | | | Critical Left | 1 | 1 |
| | | | | | | Popular Civic Federative Movement | 1 | 1 |
| | | | | | | Towards the European People's Party | 1 | 1 |
| | | Non inscrits | 7 | | | Non inscrits | 10 | 3 |
| Total seats | Total seats | Total seats | 322 | Total seats | Total seats | Total seats | 322 | |

#### Senators for Life

| Senator | Motivation | Appointed by | From | Till |
| Giulio Andreotti | Merits in the social field | President Francesco Cossiga | Previous legislature | Next legislature |
| Francesco Cossiga | Former president of Italy | ex officio | Previous legislature | Next legislature |
| Oscar Luigi Scalfaro | Former president of Italy | ex officio | Previous legislature | Next legislature |
| Rita Levi Montalcini | Merits in the social and scientific field | President Carlo Azeglio Ciampi | Previous legislature | Next legislature |
| Emilio Colombo | Merits in the social field | President Carlo Azeglio Ciampi | Previous legislature | Next legislature |
| Giorgio Napolitano | Merits in the social field | President Carlo Azeglio Ciampi | Previous legislature | 15 May 2006 (elected president of Italy) |
| Sergio Pininfarina | Merits in the social field | President Carlo Azeglio Ciampi | Previous legislature | Next legislature |
| Carlo Azeglio Ciampi | Former president of Italy | ex officio | 15 May 2006 | Next legislature |