One column What isn't obvious from these pictures is exactly how the ballots aligned with the holes in real machines. The artist's conception many others are showing doesn't look as realistic. Another issue is the Sample Ballot that voters were supposed to use to prepare. I have a separate web page, The Sample Ballot , with photographs of the pages of one of those booklets. You can see whether that was helpful or confusing in comparison to the actual voting situation.
Slate presents yet more analysis.
There is a question about how could people not know that punching two holes was a mistake. Well, most people are no longer familiar with punched cards like some of us were in the 1960s. A common thing where you push something in is a car radio. You can push as many times as you want. Only the last one counts .