Political parties are groups that contest elections and seek to hold power in government. They promote collective policies and represent different parts of society. The main functions of political parties are to contest elections, put forward policy platforms, make laws, form governments, play the role of opposition, and shape public opinion. India has a multi-party system with national parties that have a presence across states and regional parties with influence in certain states. Political parties face challenges like a lack of internal democracy, dynastic leadership, money influence in elections, and lack of meaningful differences between platforms. Reforms are needed to regulate party affairs and promote internal democracy, increase women's representation, and publicly fund elections.