"It's a clear case of EVM tampering," Mathur, the former leader of the Congress Legislature Party in the Uttar Pradesh Assembly, told reporters today.
The BJP swept the Uttar Pradesh civic polls bagging 14 mayoral seats, while Mayawati-led BSP won the mayoral posts in Aligarh and Meerut towns in western Uttar Pradesh.
The Congress leader alleged that the reliability of the Election Commission has become "a thing of the past".
Former chairman of Mathura Nagar Palika Shyam Sundare Upadhyay said that it was the "murder of democracy".
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If there was a wave of support in favour of the BJP, why the results of majority of Nagar Panchayats and Nagar Palika Parishads in Mathura went against the saffron party, he asked.
The BJP could manage to win only three of the 13 Nagar Panchayats in Mathura district.
While the mayoral poll was held through EVMs, ballot papers were used for elections to Nagar Palika Parishads and Nagar Panchayats.