Imagine you are walking away from a door after an unusually productive conversation with a voter. You’re glad to finally get some door-to-door campaigning done after waiting for over a week to get these printed walk books returned to you. Now that you have them, you’re hitting the streets again.
But you glance down to fill in the bubble for the last house on your scan sheet, you suddenly realize the bubble is already marked and you have been entering the wrong data for the wrong houses for quite a while.