. If several parties compete to power, and more than two parties have a reasonable chance of coming to power either on their own strength or in alliance with other, we call it a multi¬party system. . India has evolved a multi-party system. It is because the social and geographical diversity in such a large country is not easily absorbed by two or even three parties. . Party system is not something any country can choose. It evolves over a long time depending on the nature of society, its social and regional divisions, its history of politics and its system of elections.