India, Sept. 11 -- Opposition leaders are reportedly examining if there was any cross-voting during the Vice-President polls. With CP Radhakrishnan set to take oath as the Vice President on Friday, doubts on cross voting or invalid voting linger on.

A day after the voting for India's new VP took place, Congress MP Manish Tewari has called for a systematic investigation by all Opposition constituents.

After votes were counted on September 9 following the VP elections, Radhakrishnan's tally stood at 452, despite the NDA's strength in Parliament being only 427. It is true that the NDA was banking on support from the YSR Congress Party, but even with that, its tally would have only reached 438.

This discrepancy gave way to cross-voting spe...