Senior leader and former union minister Renuka Choudhary has been fielded by the Congress from Khammam Lok Sabha seat in Telangana.
Among others, Choudhary would take on Nama Nageswara Rao, ruling TRS' candidate.
Rao had quit the TDP and joined TRS a few days ago.
Choudhary, whose name figured in the party's seventh list of 35 candidates released Friday night, had won from Khammam in 1999 and 2004 but lost to Rao in 2009.
YSR Congress nominee P Srinivasa Reddy had won from Khammam in 2014.
Congress had earlier announced 16 candidates for the 17 Lok Sabha seats in Telangana which goes to the polls in the first phase on April 11.