In a setback to the ruling TRS party in the state, Errabelli Pradeep Rao, a senior leader in Warangal, resigned from the party on Sunday. He is the brother of Panchayat Raj Minister and Palakurthi MLA Errabelli Dayakar Rao. Pradeep Rao was denied MLA ticket from Warangal East Assembly constituency and later an MLC post. Since then, he was unhappy with the party leadership.