India, Oct. 6 -- The Opposition and the Cockroach Janta Party (CJP), which has emerged as a chief nuisance-value bloc, believe that the controversy over alleged electoral malpractice represents the biggest political opening they have had in the last 12 years to severely dent the BJP-led government at the Centre, according to sources tracking the developments.

The campaign has received a further fillip after sitting Supreme Court Justice Ujjal Bhuyan and retired Supreme Court judge Justice Rohinton Fali Nariman raised concerns over aspects of the Special Intensive Revision (SIR) process.

Sources following the developments said sections of the Congress leadership believe that allegations of electoral malpractice have made a sufficiently s...