There are 21,424 polling stations established in the State out of which 6,920 are declared as ‘Sensitive’ and 3,249 as ‘Hyper Sensitive’ polling stations, he said. The Vote Verifier Paper Audit Trail (VVPAT) system used to ensure the accuracy of the voting system in the Electronic Voting Machines (EVMs) could not be introduced in the Assembly polls in Chhattisgarh due to lack of sufficient number of printers available in the State, he added.