We've mentioned concerns about electronic voting in the past; last Tuesday's elections underscored some of those worries in a few places. One of the most interesting essays about electronic voting on Super Tuesday came from Avi Rubin, a Rice University computer science professor who led the group that analyzed Diebold software and found numerous security holes. Professor Rubin, in response to critics who claimed that he may know about computers but knew nothing about elections, signed up to be an "election judge" -- one of the workers at a polling place -- for Baltimore County. He learned first hand what worked and what didn't with the electronic voting systems, and about the importance of good poll workers. Definitely recommended.