Opposition parties, including the Congress and the TMC, on Monday walked out of the Rajya Sabha after their demand for a discussion on the Election Commission's alleged lapses in issuing multiple duplicate voter ID cards and delimitation was disallowed. Opposition MPs from the Trinamool Congress, Congress and Left parties gave notices under rule 267 that calls for setting aside business of the day to take up discussion on the issue being raised through them. But Deputy Chairman Harivansh said they could not be accepted as they were not in conformity with the rulings of the chair on such notices. While TMC and Congress MPs sought to raise the duplicate voter ID card issue, Tamil parties wanted to discuss the impact of the ensuing delimitation exercise on southern states. Opposition MPs raised slogans and pressed for a discussion. However, they staged a walkout after Harivansh asserted that their notices have not been accepted and nothing that they said was going on record. As many