NEW DELHI: Congress has protested to the Election Commission against Telangana Rashtra Samithi chief and caretaker chief minister K Chandrasekhar Rao 's comment that elections to the state will be held in November, urging the watchdog to ensure an exhaustive revision of voters' list before deciding on poll schedule.In a letter to CEC OP Rawat , Congress has reminded that "massive duplications/multiple entries/mistakes" have been detected in the voters' lists in Madhya Pradesh, Rajasthan and Chhattisgarh. The three states are likely to go to polls in November and Rao wants Telangana to be clubbed with them."Surely, Telangana would not be alien to such entries (as in MP, Rajasthan, Chhattisgarh voters's list). The lists need to be sanitised for polls as a requirement of law. We hope and trust this would be done as per the Act applicable," AICC legal cell chief and senior lawyer Vivek Tankha has written to the CEC.In an unprecedented exercise, Congress had analysed the voters' lists in MP, Rajasthan and Chhattisgarh and claimed duplicate and fake entries. It later led to weeding out of lakhs of names and Congress claimed vindication, though some called it a routine EC process. Certain aspects of the issue are even pending in the Supreme Court.Now, with the dissolution of Telangana assembly, Congress sources said the party is planning to conduct an analysis of the state's electoral list as done in MP and Rajasthan, to up the pressure on the EC for a thorough revision. Telangana CM Rao kicked up a controversy while dissolving the assembly on Thursday. He said he had spoken to the CEC and that polls will be held in November along with MP and Rajasthan.Congress appears eager to spoil Rao's plan on poll schedule. "In MP and Rajasthan, the revision of lists started in June, lakhs of duplicate entries have been found, and the process is not finished yet. It takes at least three months. We think elections in Telangana cannot be held in November. The revision of electoral list has to be thorough before the polls are held, whenever it is," Tankha told TOI.Congress has told the CEC that Rao's announcement of poll schedule undermines the authority of the top watchdog. "There are constitutional and statutory requirements that have to be fulfilled before any state can be said to be considered ready for polls," the letter says.