Factionalism can affect the stability and institutionalization of parties and party systems and it can impact on the efficiency and legitimacy of political parties and political systems as a whole. Nevertheless, factionalism has only received scant attention in the comparative literature on...

This paper studies the manipulation of electoral maps by political parties, known as gerrymandering. At the core of our analysis is the recognition that districts must have the same population size but only voters matter for electoral incentives. Using a novel model of gerrymandering that allows...