According to Duverger's theory, when are you likely to see many parties in a country?

Question

Quizplus · Accepted Answer

Duverger's theory states that a proportional representation electoral system tends to produce a multiplicity of parties, while a plurality system tends to favor a two-party system. However, the number of parties can be further increased if a country has many politically salient cleavages (such as ethnic or religious divisions) and uses a proportional representation system. Therefore, the correct answer is D: when the country has many politically salient cleavages and the electoral system is proportional.

According to Duverger's Theory, When Are You Likely to See