We combine Duverger’s Law (1954) with Demsetz’s (1968) theory of natural monopoly to provide a novel perspective on electoral competitiveness in a single member district, plurality rule system. In the framework we develop, competitiveness depends on the contestability of elections, which...

We combine Duverger's Law (1954) with Demsetz's (1968) theory of natural monopoly to provide a novel perspective on electoral competitiveness in a single member district, plurality rule system. In the framework we develop, competitiveness depends on the contestability of elections, which...