There's a strong moral argument in favor of the DNC leaks: the American people ought to know that its political process was corrupted by powerful actors within its own institutions. Schneier said, "This kind of cyberattack targets the very core of our democratic process. " In this case, though, the attack targeted actors who prevented democratic process. Were we exposed to fictitious narratives intended to advance pr…
Parties choose their candidates. While it is democratic in the sense that people cast ballots; the process was never guaranteed to be a level playing field. Sanders was an outsider from the democratic party. The party has rules and systems to keep people like Sanders out. That is what super delegates are for. You and I may both have preferred Sanders, but we don't have a right to the DNC's private email.
As for the polls, in Canada we do a simple pencil and paper system that works extremely well. You might be able to get an extra vote or two here or there, but the process is essentially unbreakable.