Switching over of the BJP candidate to the AIADMK in nearby Avanashi constituency has created a flutter among the electorate.
BJP candidate for the reserved constituency, R Murugan joined AIADMK on Thursday last, when he went straight to the ruling party office at Avanashi and adorned the local functionaries of the ruling party with shawls.
Murugan was a general council member of the BJP and secretary of SC/ST wing of the party.
A woman candidate is contesting on behalf of AIADMK from the constituency.
Defending the candidate's action, his supporters say that BJP had announced the candidature of Murugan.
However, the party, a couple of days ago, reportedly decided not to field him.
The reported move prompted Murugan to leave the party and join AIADMK, so that he could "teach a lesson BJP", they said.
Murugan, a councillor of district panchayat, was not immediately available for comments, as he was busy campaigning.