That was a very interesting video but I think you misrepresent it slightly. Its clear the Estonian E-voting system was designed very very well in comparison to the ridiculously bad Diabold machines of yesteryear. The problem was that the current state-of-the-art hasn't advanced enough to make major fraud at least as hard as the paper ballot. And that means that e-voting makes it plausible for state actors to dictate election results, which in a democracy is a very bad thing. In other words, there was no way Estonia could make it perfect and anything less than perfect is broken.
The important point for me was that getting e-voting right is so incredibly important to a democracy that it should be treated as a national security issue. The Estonian E-voting system was clearly treated as a government IT project as procedures like "don't plug in a personal USB stick into the master counting server" are violated if its more convenient than replacing the broken DVD drive. Worse, politics gets mixed in which means that security concerns are dismissed with complacent and technically questionable statements like "nice people who care about computer hygiene have no viruses".
Even without getting into complex election fraud, parties in many countries already know how to buy votes in a paper-ballot system: you simply offer a bottle of vodka for a cell-phone photo of the ballot marked the way you want.
And even without that, there's a much simpler calculation in play in Estonia. Keskerakond (the party closely allied with Putin's party), only got 7.7% of the e-votes in the most recent election: the demographics of online voters has very little overlap with their supporters. If only the paper-based votes were counted, Keskerakond would have won the election.
Sure, they'd still have the complication of actually forming a government; but it's much more likely they'd be able to do that with a first-place showing (and possibly without Savisaar).
With those sorts of numbers, if I were a Keskerakond strategist, I'd be doing everything I possibly could to discredit e-voting too. And the more "useful idiots" I could find, who'll merrily interfere in the elections a country they know very little about because it suits their own ideals, the better.
> you simply offer a bottle of vodka for a cell-phone photo of the ballot marked the way you want
you have to keep tens of thousands of people quiet for that to work without any suspicion at all. with e-voting you can commit major fraud without anyone noticing and with much much less evidence trail.
