TDP in Telangana on Friday sought the disqualification of its four MLAs, who switched loyalty to the ruling TRS this week.
The N Chandrababu Naidu-led Opposition party called the conduct of these legislators as "unethical and unconstitutional".
"The members dissented from the party and joined TRS in presence of K Chandrasekhar Rao, President of TRS, which is unethical and unconstitutional and opposed to democratic principles. It is quite contrary to 10th Schedule of Constitution of India as well as they are defeating the immediate moto of anti-defection law. I, therefore, request you to kindly examine and disqualify them from their legislative membership forthwith under the provisions of Constitution," TDP MLA A Revanth Reddy said in a letter to Telangana Assembly Speaker.
The letter named Errabelli Dayakar Rao, T Prakash Goud, K Vivekananda, S Rajender Reddy.
Revanth Reddy has been named the leader of TDP in the Assembly by Naidu, the party President.
Meanwhile, 10 of the 15 TDP MLAs, who have quit their parent party, have asked the Speaker to merge them with the TRS.
"We (the 10 members) request for accepting our merger into Telangana Rashtra Samithi Legislature Party in Telangana Legislative Assembly with immediate effect," they said in the letter.
"Accordingly, henceforth, our names may please be shown in the list of TRS Legislature Party in Telangana Legislative Assembly," the letter stated.
The 10 MLAs are: Errabelli Dayakar Rao, Talasani Srinivas Yadav, G Sayanna, T Prakash Goud, Teegala Krishna Reddy, Manchireddy Kishan Reddy, Madhavaram Krishna Rao, K P Vivekananda, Challa Dharma Reddy, S Rajender Reddy.
They quit the Chandrababu Naidu-led Opposition party at different times over the last several months. TDP had won 15 seats in the 2014 Assembly elections.