An emeritus professor of the Sorbonne and member of the FNSP, he has published many books and articles in newspapers, such as Corriere della Sera, la Repubblica, El País, and especially Le Monde.

Duverger studied the evolution of political systems and the institutions that operate in diverse countries, showing a preference for empirical methods of investigation rather than philosophical reasoning.

A staunch communist and Soviet Union admirer, he wrote following the February 1956 speech by Soviet leader Nikita Khrushchev that Stalin had been no better and no worse than the majority of tyrants who preceded him, adding that the Russian Communist Party was a living organism whose cells were continuously rejuvenated, and that the fear of purges had had the effect of keeping the militants on edge, constantly reviving their zeal.

However, towards the end of the war, Duverger grew close to the Resistance, and in Libération[clarification needed] analyzed the legitimacy of the new government of France and devoted himself to social-scientific theory.

They have flexible and disorganized structures, in general are weakly disciplined and lack developed pragmatic content, allowing each of their members to benefit from an enormous freedom of action.

Their funding is generally provided by a sponsor, and as their strength comes from their elected representatives, they are typical parties of parliamentarian creation, which depend on the reputation and support of their benefactors.

In political science, Duverger's law is a principle which asserts that plurality rule elections structured within single-member districts tends to favor a two-party system.