Federalism is a system of government in which the power is divided between a central authority and various constituent units of the country. Usually, a federation has two levels of government. One is the government for the entire country that is usually responsible for a few subjects of common national interest. The others are governments at the level of provinces or states that look after much of the day-to-day administering of their state. Both these levels of governments enjoy their power independent of the other. According to A.V Dicey, there are three leading characters of a fully developed Federalism. They are briefly discussed as below:
1. Distribution of powers among governmental bodies: In a federation, there should be a clear division of powers among the central and state government, each with limited and coordinate powers so that the units and the center is required to enact and legislate within their sphere of activity and none violates its limits and tries to encroach upon the functions of others. This requisite is evident in the Indian Constitution.
2. Supremacy of the constitution: There should be the supremacy of the Constitution of the nation which is not the hand-made of either the Centre or of the States. In case of any violation of the provisions of the Constitutional provisions, the courts of laws are there to ensure that the dignity of the Constitution is upheld at all costs.
3. Authority of the courts as the interpreters of the constitution: In a federal constitution, the court of law has the authority to act as the interpreters of the constitution and its provisions. In India, the Constitution has provided for a Supreme Court and every effort has been made to see that the judiciary in India is independent and supreme. The Supreme Court of India can declare a law as unconstitutional or ultra vires if it contravenes any provisions of the Constitution.