A few former ministers and leaders from Congress, TDP and other parties also joined TRS on the occasion.
Slamming Congress for not keeping its promise to grant Telangana statehood, Chandrasekhar Rao said the separate state can be achieved by "dictating terms to Delhi", instead of pleading for it if TRS wins a substantial number of seats in the next elections.
Keshav Rao had already clarified that he would not like to contest any election, the TRS president said.
He, however, noted Keshav Rao should be a Parliament member to give voice to Telangana.
"This joining of Congress leaders is not a cheap political action. They have done everything possible to secure Telangana. But, they quit Congress after having failed in their efforts," he said.
Referring to a case filed against him in a Khammam court for his comments on the Prime Minister, he claimed the Prime Minister did not show any concern for the Telangana demand.