On a day the collection of signed enumeration forms under the special intensive revision in Bihar just about touched the halfway mark, chief election commissioner Gyanesh Kumar defended the exercise, saying that “a pure electoral roll is inevitable for strengthening democracy”.EC on Tuesday said 18.2% enumeration forms received in Bihar were uploaded on ECINET. As of 6 pm on Tuesday around 47% forms had been collected, with 10.5% in the last 24 hours. “Maintaining the same momentum, with 50% forms remaining to be collected, the exercise will be completed well in time,” EC said.