A party system can be defined as the number of political parties in a country and the manner in which they operate within the political landscape. It describes the structures of political parties and their relationship with the government and the voters. The party system in a country can range from a single-party system, where one party dominates the political scene, to a multi-party system, where multiple parties compete for political power. The type of party system can have a significant impact on the political culture and stability of a country.