In West Bengal, peaceful voting is on for by-elections in Kolkata South Parliamentary constituency. Over 20 per cent voting was recorded in first three hours of polling. The State Chief Electoral Officer, Mr. Sunil Gupta told AIR that some Electronic Voting Machines were replaced in different polling booths due to technical snag. No major untoward incident has so far been reported. AIR Kolkata Correspondent reports that besides State Security personnel, 20 companies of Central Paramilitary forces have been deployed to ensure free and fair voting.Over 15 lakh 60 thousand voters are eligible to cast their franchise. Altogether five candidates are in the fray. They include Mr. Subrata Bakshi of the Trinamool Congress, Mr. Ritabrata Banerjee of the CPI (M) and three other independents. The seat had fallen vacant following the resignation of Ms. Mamata Banerjee from the Lok Sabha after being elected in the West Bengal Assembly.