India is the largest democratic country in the world. Democracy is defined as a government of the people, by the people and for the people. It is considered the finest form of government in which every individual participates consciously and in which the people remain the sovereign power determining their destiny. So, in democracy the people are the ultimate source of power and its success and failure depend on their wisdom, consciousness and vigilance.It is not possible for all the people in a big country like India to participate in the government. This is why they are required to exercise their franchise and elect their representatives at regular intervals. These representatives from the parliament legislate and form responsible government.