Abstract: This paper examines the rise of the Bharatiya Janata Party (BJP) from a marginal national force to India’s principal governing party and asks whether its post-2014 dominance should be understood as a durable transformation of the party system or as a contingent phase of electoral predominance. Drawing on major scholarship on Hindu nationalism, ideology, party-system change, social coalitions and welfare politics, and using Election Commission of India electoral data, the paper develops a multi-dimensional explanation of BJP expansion. It argues that no single factor—Hindutva, the decline of the Congress, Narendra Modi’s leadership, welfare politics, or social engineering—adequately explains the BJP’s trajectory. Rather, the party’s rise resulted from the interaction of ideological mobilisation, organisational continuity, expansion across social groups, and the restructuring of political competition following the decline of Congress-centered politics. The analysis also distinguishes electoral dominance from autonomous parliamentary majority. The BJP increased its Lok Sabha representation from 161 seats in 1996 to 282 in 2014 and 303 in 2019, but fell to 240 seats in 2024 when party was expecting more than 400 seat by raising the slogan of 'Abki bar 400 par' despite retaining a vote share of 36.56 percent. This divergence suggests that the BJP’s national predominance remains substantial but is not synonymous with uninterrupted single-party majoritarian control. The paper therefore interprets 2024 not as the end of BJP dominance, but as evidence of its institutional and electoral limits.