When the nominations were taken up for scrutiny, four were found invalid and "it is announced that the nomination of A Navaneethakrishnan is found valid," Assembly Secretary and Presiding Officer for the bypoll A M P Jamaludeen said.
The last date for withdrawing nominations is June 26.
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The bypoll for Rajya Sabha from Tamil Nadu was necessitated after a sitting DMK MP T M Selvaganapathy was disqualified, after he was convicted in a corruption case.
Navaneethakrishnan, former state Advocate General, had also served as Chairman of Tamil Nadu Public Service Commission.
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