Bhushan: in case two consecutive votes are cast... ... Plea For 100% VVPAT Verification Of EVM Votes : Live Updates From Supreme Court

Bhushan: in case two consecutive votes are cast for the same party, the VVPAT can be manipulated so that one vote goes to one party and another goes to other party.

They are not showing the source code of the EVM citing IP concerns and that is causing even more trouble.