Degressive proportionality definition
Degressive proportionality means that although constituent units are not granted an equal number of seats, the least populous ones have more seats than they would if a strictly proportional formula were applied. In the Span- ish case, this intermediate formula appears to be the most suitable option. Giving all the constituent units the same weight is more typical of federal states created through an agreement between preexisting states («coming- together» federations, e.g. USA). On the other hand, establishing a total proportionality between seats and popu- lation would undermine the federal nature of the chamber.