1. If one party remains in power in a country for a long period and no other party has any kind of influence the party system it is called One Party System.
2. When there are two equally strong parties which alternatively come to power. It is called Two-Party System.
3. In a country where many political parties exist and compete with each other to capture power and have more or less influence in different states is called ‘Multi-Party System.
4. Democracy develops in Multi-Party System.
