Coalition era & contemporary politics
The coalition era (1989-2014), the rise of regional and Mandal/Mandir politics, anti-defection law, and contemporary single-party dominance after 2014.
The collapse of the one-party dominant system
The Indian National Congress dominated national politics from 1952 to 1989 in what Rajni Kothari termed the "Congress system"—a consensual umbrella that absorbed competing factions internally. Three shocks dismantled it. First, the 1967 general election cost Congress eight state assemblies and reduced its Lok Sabha majority, ushering in the first wave of coalition (Samyukta Vidhayak Dal) governments in the Hindi belt. Second, the 1975-77 Emergency under Article 352, proclaimed by President Fakhruddin Ali Ahmed on Indira Gandhi's advice (25 June 1975), discredited Congress and produced the Janata Party's 1977 victory—the first non-Congress government at the Centre under Morarji Desai. Third, the assassination of Rajiv Gandhi (21 May 1991) ended the charismatic Nehru-Gandhi anchor.
The decisive break came with the 1989 election. The National Front, led by V.P. Singh and supported externally by both the BJP and the Left, ended Congress's majority for good. From 1989 to 2014 no single party commanded a Lok Sabha majority; governance ran through coalitions—the National Front (1989-90), the United Front (1996-98), the BJP-led NDA (1998-2004, formalised under Atal Bihari Vajpayee), and the Congress-led UPA (2004-2014).
Mandal, Mandir and the federalisation of the vote
Two movements reshaped the electorate. The implementation of the Mandal Commission report by the V.P. Singh government in August 1990—reserving 27% of central government jobs for Other Backward Classes—triggered the rise of OBC-based parties and was upheld with the creamy-layer caveat in Indra Sawhney v. Union of India (1992). Simultaneously, the BJP's Ram Janmabhoomi movement, dramatised by L.K. Advani's 1990 rath yatra and culminating in the demolition of the Babri Masjid on 6 December 1992, consolidated a Hindu-nationalist vote bank. The BJP grew from 2 seats (1984) to 182 (1998-99).
The period also marked the ascent of strong regional parties—the DMK and AIADMK in Tamil Nadu, the Telugu Desam (founded by N.T. Rama Rao in 1982), the Samajwadi Party and Bahujan Samaj Party in Uttar Pradesh, the Trinamool Congress, and the Janata Dal (United) and RJD in Bihar. Federal coalitions made these parties kingmakers, deepening cooperative and competitive federalism.
Institutional anchors of coalition stability
Coalition durability rested on institutional reform. The Anti-Defection Law, inserted as the Tenth Schedule by the 52nd Amendment (1985) and tightened by the 91st Amendment (2003) to bar all splits and cap the council of ministers at 15% of the House, curbed the "Aaya Ram, Gaya Ram" floor-crossing of the 1960s. The Supreme Court in S.R. Bommai v. Union of India (1994) limited the misuse of Article 356 by mandating that a government's majority be tested on the floor of the House, not at Raj Bhavan—reducing arbitrary President's Rule that had toppled coalitions. The Election Commission's enforcement of the Model Code of Conduct, energised by T.N. Seshan (CEC 1990-96), professionalised contests.