write any three importances of the political institutions?

Political institutions are arrangements by the government to perform particular functions. These functions are assigned to these institutions for the betterment of the people and the democracy. This is because of the following:

• The government is responsible for ensuring security to the citizens and providing facilities for education and health to all. 
• It collects taxes and spends the money thus raised on administration, defence and development programmes.
• It formulates and implements several welfare schemes for the people.

Thus, political institutions are necessary/important.