I don't think the USSR system was quite like that but yes of course any voting system can be manipulated: Russia is a good example, because today in that country you can cast your vote in large meetings where party officials come round end effectively bribe or threaten you to vote in a particular way. That sort of thing makes a mockery of electoral observers who attend the vote and the count, because of course the fraud actually takes place before and after (with boxes stuffed with extra papers well out of sight of prying eyes). So e-voting would address some of those issues but would doubtless cause others. Even in good ol' Britain. I am not against it: I am naïve enough to believe that we could probably make it work fairly here.