"I will file my nomination papers on Tuesday," Gandhi told PTI.
Sources said he was to file the papers on Monday, but it was delayed by a day in view of the presidential election on July 17.
The sources said Gandhi would also be accompanied by top opposition leaders, including those of the Left parties and the TMC.
The name of Gandhi, the former West Bengal Governor, was approved unanimously on July 11 at a meeting of 18 opposition parties chaired by the Congress president. The meeting was also attended by the JD-U.
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