Whiel Baalu, who was elected from Sriperumbudur last time, will now contest from Thanjavur, Jagathrakshkan who won from Arakonam will now contest from Sriperumbudur.
Karunanidhi said the party's manifesto will be released Tuesday.
The DMK president's eldest son and former union minister M.K. Alagiri has decided not to contest the Lok Sabha polls. His daughter, Kanimozhi was elected to the Rfajya Sabha last year with the Congress support