India, March 19 -- The decision of Nitish Kumar to file nomination papers for the Rajya Sabha appears to mark the closing chapter of one of the most consequential political careers in modern Bihar. For nearly two decades, Kumar shaped the state's politics as chief minister-holding the office a remarkable ten times through shifting alliances, political recalibrations, and strategic adaptability.

His move to Parliament now signals a major transition not only for his party but for the political balance in Bihar. Behind the decision lies a combination of electoral arithmetic, health concerns, and the growing dominance of the Bharatiya Janata Party within the state's ruling alliance.

The changing power equa...