If voting systems are hacked and the count altered, what does a democracy do?
I believe that the other shoe is yest to fall and we will find out that computers used in the voting system - the voting machines and the computers used to collate the votes - were compromised.
Kieren McCarthy's October 2017 article "US voting server in election security probe is mysteriously wiped" https://www.theregister.co.uk/2017/10/26/voting_server_georgia_wiped/ talks about an incident with one voting system.
Bruce Schneier's blog post "Hacking and the 2016 Presidential Election" https://www.schneier.com/blog/archives/2016/11/hacking_and_the.html adds the perspective that evidence might indicate that by targeting systems in key states the electoral college vote was tipped in favour of Trump (potentially explaining why Clinton won the popular vote by a huge margin),
And there is Matt Blaze's testimony to Congress https://oversight.house.gov/wp-content/uploads/2017/11/Blaze-UPenn-Statement-Voting-Machines-11-29.pdf. In his wrap-up he says:
"In summary, the architecture of current electronic voting systems, especially those based on DRE voting machines, makes disruption attacks especially attractive to adversaries and difficult to effectively prevent. These systems can give hostile state actor s inter est ed in disruption an even easier task than that facing corrupt candi date s seeking to steal even a small local office. And the consequences of election disruption strike at the very heart of our national democracy."
I'd further argue that it is particularly difficult to detect especially if the practice of wiping systems as described in Kieren's article is common.
But the real issue is this: if the voting systems are hacked and the results altered, what does a democracy do? This is a question not just for the US, but perhaps for other countries. Brexit?