Comment Norway (Score 2) 190
I recommend reading some of the reports produced after the E-voting trials in Norway:
http://www.ifes.org/Content/Publications/News-in-Brief/2012/June/Speed-Efficiency-and-Compliance-an-Evaluation-of-E-Voting-in-Norway.aspx
As for my point of view (as a former sceptic), I was convinced during the process that the trials were held at a necessary level both with regards to voter and ballot security. The reason for not continuing the trials was "political" - not based on the results from the trials. We had a general election in Norway two years later, and the parties that are "against" E-voting in the first place won that election...
The source code and documentation from the trials are available (the web page is in Norwegian):
http://www.regjeringen.no/nb/dep/kmd/prosjekter/e-valg-2011-prosjektet/kildekode/tilgang-pa-kildekode.html?id=646007