Some doubts were raised about the acceptance of his nomination papers as Vaiko was recently sentenced to one year jail term by a special court here in a sedition case.
An ally of DMK in the recently-concluded Lok Sabha polls, the MDMK was allotted one Rajya Sabha seat as a part of the alliance agreement.
According to a statement issued by K.Srinivasan, Returning Officer and Assembly Secretary, a total of seven nominations were accepted and four were rejected.
As there were apprehension about his nomination not being accepted, Vaiko had asked DMK President M.K. Stalin to field an alternate candidate from his party.
Accordingly N.R. Elango of the DMK had also filed his nomination which was also accepted. He is likely to withdraw from the race.
The other contestants are: M. Shanmugham and P. Wilson (both DMK), A. Mohammed John and N. Chandrasekaran (both AIADMK) and Anbumani Ramadoss of PMK.
The AIADMK has 123 MLAs in the 234-member Tamil Nadu Assembly, while the DMK has a strength of 101. DMK ally Congress has seven MLAs, there is one Independent member, while two seats are vacant.
The elections are being held to fill up the vacancies caused by the retirement of five Rajya Sabha members T. Rathinavel, V. Maitreyan, K.B. Arjunan, R. Lakshmanan (all AIADMK), and D. Raja (CPI) and the resignation of DMK's Kanimozhi following her win in the 2019 Lok Sabha polls.
( With inputs from IANS )