One of my friends almost bailed because he had to be at work at a certain time. It's a quick way to block GOP voters, largely, because they are trying to vote on the way into work, and have a limited "window" where they have to vote, or bail, because they absolutely must be at work on time.
Count all health care workers in this group.
By and large Rats have all day to vote, and they don't mind waiting while the voting machine gets fixed.