(1) The senate is elected on a regional basis except for the seats assigned to the constituency of italians abroad.
(2) Three hundred and fifteen senators are elected, of which six are elected by the constituency of italians abroad.
(3) No Region shall have fewer than seven senators; Molise has two senators and the Aosta Valley one.
(4) Having set aside the seats assigned to the constituency of italiens abroad, the distribution of seats among the regions is calculated proportionally to the population of the last general census, based on the quotients and the largest remainders.