During the Bharatiya Janata Party （BJP） government led by PM Modi from 2014 to 2024，Indian politics has undergone a significant transformation. Manifested as the erosion of coalition politics，the democracy has shifted from pluralism to majoritarianism. On the one hand，power has been centralized，local autonomy has been weakened，and the characteristics of asymmetric federalism have become more prominent. On the other hand，the minorities are marginalized in the formal power structure，and the Hindu majority dominates politics. The Modi government achieved that outcome through the transformation of ideology，national capacity and civil society in India. At the ideological level，the BJP government uses Hindu nationalism to dissolve the “secularism” stipulated in the constitution，and successfully transformed the national identity through the infiltration of the daily social and political society by this religious nationalism. In terms of national capacity，the BJP government has strengthened its control over society by establishing a large-scale welfare system，a nationwide identity recognition system and a financial system. In the field of civil society，the BJP government has weakened the independence of civil society，shaped public opinion and undermined criticism by cracking down and dividing opposition forces. The political development during Modi’s era will continue to shape Indian democracy for a considerable period of time in the future.