" India’s primordial nationalisms—whether expressed in language, religion, caste, or even commensality—would have pulled the country apart, as happened in several other postcolonial states, had it not been for the fact that India consciously gave itself a constitutional order that incorporated
universal franchise and the rule of law; guaranteed individual rights and a federal system that promulgated separation of powers at the center and limits on the central government’s authority over the states; and established recurring elections that tested the strength of contending political parties and endowed them with the privilege of rule for limited periods of time.
By adopting such a framework, India enshrined the twin components that mark all real democracies: contestation, or the peaceful struggle for power through an orderly process that confirms the preferences of the polity, and participation, or the right of all adult citizens, irrespective of wealth, gender, religion, or ethnicity, to vote for a government of their choice. "

― Bibek Debroy , Getting India Back on Track: An Action Agenda for Reform