"My party is not contesting the election. It will not extend support to any party," Vaiko said in a brief interaction with reporters here.
MDMK which contested the 2014 Lok Sabha elections as a part of the NDA had snapped its ties with the alliance last month with Vaiko alleging that the Narendra Modi Government was acting against Tamils and betrayed the people of the state.
Ruling AIADMK and DMK are going all out to win the seat, which fell vacant following disqualification of Jayalalithaa after the four-year jail term awarded to her by a Bengalauru Special Court on September 27 in the Rs 66.65 crore disproportionate wealth case.
Seeking to put up a united fight against AIADMK, DMK has appealed to all parties to support its candidate.
Party state unit President Tamilisai Soundararajan today said the NDA candidate would be announced in next two days.
Meanwhile, MDMK has convened a meeting of its top decision making bodies including District Secretaries, high-level and political consultative committees on January 31 in Tuticorin.