is elected on a single ballot. The ballot includes all candidates for a given single-member district (majoritarian component). For each candidate, the parties and party-lists that supported him/her are also listed, which is used to determine the proportional seats. These latter seats are allocated within each single regional constituency. A 3% minimum threshold for single party-lists is required for the proportional component (or 10% if within a coalition, so long at least one party within the coalition reached the required 3% threshold), and is calculated nationally. Notwithstanding this, a different threshold is needed for lists representing linguistic minorities, which is 20% and is calculated on a regional basis. Election of the Chamber of Deputies The Chamber comprises 400 members elected by universal suffrage and by citizens who are 18 or older. Out of the total number, according to the Rosatellum bis, 147 are directly elected in single-member districts. 253 are elected by proportional representation on a national basis (of whom 8 are elected in overseas constituencies). As the Senate of the Republic, the Chamber of Deputies is elected on a single ballot, as indicated above for the Senate of the Republic. The only difference is that the proportional component is calculated based on the national average of the vote. Overseas constituencies The Italian Parliament is one of the few legislatures in the world to reserve seats for those citizens residing abroad. There are 8 such seats in the Chamber of Deputies and 4 in the Senate of the Republic, in accordance with Law n. 459 of 27 December 2001 (as amending articles 48, 56, and 57 of the Constitution of the Italian Republic), also known as Legge Tremaglia. Graphical summary Membership Senate of the Republic The current membership of the Senate of the Republic, following the latest general election. Chamber of Deputies The current membership of the Chamber of Deputies, following the latest general election: See also Constituent Assembly of Italy Italian Parliament (1928–1939) Politics of Italy Prime Minister of Italy Roman Senate Notes References Further reading External links Official website Election resources for the Parliament Italy 1861 establishments in Italy Italy Italy Italian constitutional institutions