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Jaswant Singh was elected to the Rajya Sabha five times. He was first elected in 1980 and served until 1986. He was re-elected in 1990, 1996, 2002, and 2008. He served as the Leader of the Opposition in the Rajya Sabha from 2004 to 2009. He was a prominent member of the Bharatiya Janata Party (BJP) and held several ministerial positions in the government.