The Congress announced late on Tuesday night its candidate for the Velachery constituency.
Party people said that there was intense lobbying for this ticket and that the local team of the party had asked its bosses in Delhi to take the call.
J M H Hassan is the candidate; he is the son of former Congress MP, J. M. Haroon, Hassan contested in the Ambattur constituency in 2016 state poll and lost.
Velachery covers parts of south R A Puram, MRC Nagar and kuppams off the seashore.
The AIADMK has chosen ex-MLA M K Ashok and MNM, former IAS officer Santhosh Babu.