Nitish Kumar’s decision to move to the Rajya Sabha marks the end of an era in Bihar politics, highlighting two decades of political dominance and social coalition building.

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• Nitish Kumar became Bihar’s longest-serving chief minister, spending more than 7,200 days in office across multiple terms, shaping the state’s political and governance landscape.
•  His tenure accounted for nearly 28 percent of the total days served by all Bihar chief ministers since independence, reflecting his remarkable political longevity.
•  Among chief ministers from major Indian states, Nitish Kumar ranks third in total days in office, after Odisha’s Naveen Patnaik and West Bengal’s Jyoti Basu.
•  Unlike many regional leaders, Kumar did not rely on a single dominant ideology or strong caste base, instead building a broad and flexible political coalition.
•  His strategy combined upper-caste support with lower OBC and Dalit communities, groups that had contrasting political experiences under earlier regimes.
•  The alliance with the Bharatiya Janata Party helped balance social justice politics with upper-caste representation, strengthening the National Democratic Alliance’s base in Bihar.
•  Kumar’s political formula subtly contrasted with Lalu Prasad Yadav’s Muslim-Yadav coalition, which had previously dominated the state’s political environment.
• *The 2015 Bihar election highlighted this dynamic when JD(U) aligned with RJD, leaving the BJP largely dependent on upper-caste voter support.