

There’s also a difference, because our elections typically have only a few races on them. In other words, at the federal level I only vote for the candidates in my writing. Typically four to six options.
In a us election, there can be a ballot containing choices for many different levels, including judges, district attorneys, and so on. Not to mention they might have several referenda on the same ballot too.
I could see that being much more complex on paper, making electronic voting attractive.
It may seem silly, but aside from commuting time the biggest advantage for me was being able to use my own bathroom. No bidets in the office washroom!