Earlier, there were speculations that Kiran Reddy dropped the plans to form a new party on the platform of united Andhra Pradesh as not many former ministers and legislators were ready to sail with him.
Three former ministers who were considered his supporters have already joined the TDP.
Kiran Reddy, the last chief minister of Andhra Pradesh, resigned Feb 19 to protest passage of the bill in parliament for formation of a separate Telangana state.
He had defied the Congress over its decision to bifurcate the state and accused the party of resorting to unconstitutional and undemocratic measures to divide Telugu-speaking people.