India, May 1 -- Thursday night saw high drama in West Bengal after the Trinamool Congress (TMC) alleged ballot tampering in Kolkata, just hours after party supremo Mamata Banerjee called on workers to "stay up all night and guard the EVM strongrooms".

Mamata Banerjee, who is the sitting chief minister of the state, personally came down to various strong rooms after TMC candidates Kunal Ghosh and Shashi Panja did a dharna after alleging that the strong rooms were being opened by the poll body with the Bharatiya Janata Party (BJP), without the presence of "relevant stakeholders". The West Bengal chief electoral officer (CEO) Manoj Kumar Agarwal countered Banerjee by citing the rulebook.

Kunal Ghosh called the incident "a mistake of EC" an...