Regional parties in India have played a crucial role in shaping both state-level politics and coalition governments at the Centre. Unlike national parties, which have pan-India presence and policies, regional parties focus on specific states or regions, addressing local issues, cultural identities, language concerns, and economic priorities. Their influence has grown steadily since the late 1980s, when the dominance of the Congress party began to decline, and India witnessed the emergence of multi-party politics. The rise of regional parties has fundamentally altered the dynamics of Indian politics, especially in terms of coalition formation and governance at both state and national levels. At the state level, regional parties often emerge from dissatisfaction with central leadership or neglect of regional aspirations. Parties such as the Telugu Desam Party (TDP) in Andhra Pradesh, Dravida Munnetra Kazhagam (DMK) and All India Anna Dravida Munnetra Kazhagam (AIADMK) in Tamil Nadu, Shiv Sena in Maharashtra, and the Biju Janata Dal (BJD) in Odisha, have successfully captured regional sentiments and formed governments. Their electoral success demonstrates the importance of regional identity, linguistic pride, and local development issues in Indian politics. By focusing on these issues, regional parties often create pressure on national parties to accommodate regional demands, influencing policy decisions both at the state and central levels. In coalition politics at the Centre, regional parties have become indispensable players, especially after the 1989 general elections, which marked the decline of single-party dominance by Congress. With no single party able to secure a majority in Parliament consistently, regional parties became key coalition partners. This led to the era of coalition governments, where alliances such as the United Front (1996-1998), the National Democratic Alliance (NDA) led by the Bharatiya Janata Party (BJP), and the United Progressive Alliance (UPA) led by Congress relied heavily on regional parties for their survival. Regional parties leveraged their bargaining power to secure ministerial portfolios, policy concessions, and developmental projects for their states. Their presence ensured that central policies were often a result of negotiation and compromise, reflecting the diverse interests of different regions. One of the significant roles of regional parties in coalition politics is balancing regional aspirations with national priorities. For example, in the UPA government from 2004 to 2014, parties such as DMK, Trinamool Congress, and BJD played a pivotal role in shaping decisions on economic reforms, social welfare schemes, and allocation of central funds to states. Similarly, in the NDA governments, regional allies such as Shiv Sena, JD(U), and AIADMK have influenced the formation of central policies, particularly in sectors such as infrastructure, agriculture, and industrial development. This influence demonstrates that coalition politics at the Centre cannot ignore the voices of regional parties, as