Voters in Chhattisgarh's 18 constituencies, all in Naxal affected districts, will head to the polls today in the first phase of the state assembly election. Around 1 lakh security personnel are on duty across Chhattisgarh, one of five states that will hold elections in the coming weeks. An event widely seen as a semi final before next year general elections.The remaining 72 constituencies will vote on November 20.