Chennai (TN), May 16 (ANI): The first phase of the Tamil Nadu Assembly elections began on Monday with beefed up security, including adequate deployment of Central paramilitary forces. In Tamil Nadu, voting will take place for 233 seats. All the materials reached at all booths in the 233 constituencies. All non-sensitive booths will have policeman, while central paramilitary force personnel will provide security cover to the sensitive and hypersensitive booths.