India, June 21 -- The Bharatiya Janata Party (BJP) has rejected allegations of engineering rebellion in opposition parties such as the Trinamool Congress and the Shiv Sena (UBT), blaming the recent upheavals on the "leadership deficit" of these parties.

The BJP-led National Democratic Alliance (NDA) stands to benefit from these splits as the rebel groups have shown an inclination to support the ruling coalition. The NDA, which has 293 lawmakers in the Lok Sabha, could see its tally rise to 319 with 20 rebel MPs from the TMC - now merged with the Nationalist Citizens Party of India (NCPI) - and six from Shiv Sena (UBT) having spoken in favour of switching sides.

While the opposition has trained its guns at the BJP, accusing it of instiga...