931. La disproporzionalità territoriale: un caso di studio

Working Paper n.931 - Settembre 2025

Fabrizio Balli

Regione Toscana

Abstract

This paper adapts the concept of disproportionality, commonly used in electoral studies, to  the  context  of  territorial  representation.  This  is  relevant  to  all  cases  where  the  number  of representatives  assigned  to  electoral  districts  in  not  predetermined,  but  is  an  outcome  of  the electoral process, as is the case in Italy for regional elections. Drawing on a case study of the system currently in force in Tuscany,  the article shows  that  some districts  may result  markedly overrepresented, while others are subject to the opposite trend. Also,the specific legal provisionsgiving rise to  such  phenomena  are  identified  and  discussed.  Finally,  the  work  shows  how territorial  disproportionality indexes may assist  lawmakers in finding optimal  rules,  in a  law and statistics perspective.

Keywords

apportionment, disproportionality, election law, representation.

Jel Codes

K16, D72