India, May 2 -- In the final days before vote counting in West Bengal, Chief Minister Mamata Banerjee adopted an unusually assertive stance on electronic voting machines, or EVMs, raising concerns over alleged tampering and swapping.

The development marked a noticeable departure from the earlier position of the Trinamool Congress (TMC), which had largely refrained from sustained campaigns questioning EVM credibility in past elections.

The shift unfolded through a series of high-profile actions.

Mamata Banerjee issued a nine-minute video appeal urging party workers to maintain round-the-clock vigilance at strongrooms storing EVMs.

Later the same evening, she personally visited a strongroom facility in Kolkata, remaining there for nearl...