Chengalpattu, Oct. 6 -- Polling for the by-election to the Madurantakam (SC) Assembly constituency in Tamil Nadu's Chengalpattu district is underway amid tightened security, District Collector Veerappan said on Tuesday.

The District Collector said security arrangements have been strengthened across the constituency and all polling stations have been provided with Electronic Voting Machines (EVMs) under tight security.

"Polling is progressing smoothly," he said.

Veerappan further said CCTV surveillance has been intensified at sensitive polling stations as part of the security arrangements.

In Madurantakam, TVK's Maragatham Kumaravel faces DMK's Paranthaman, AIADMK's Kanitha Sampath, CPM's Suganthi and NTK's Janakiraman among 28 candida...