Article 57

The Senate of the Republic shall be elected on a regional basis, except for the seats allocated to the Overseas Constituency. The number of elected Senators shall be two hundred, four of whom shall be elected in the Overseas Constituency. No Region or autonomous Province may have fewer than three Senators; Molise shall have two, Valle d’Aosta one. Except for those allocated to the Overseas Constituency, seats shall be apportioned among the Regions and autonomous Provinces, subject to the provisions of the preceding paragraph, in proportion to their population according to the most recent general census, on the basis of quotients and highest remainders.