At training the other night, I was surprised to learn that ditto marks are not allowed. I can’t tell you how many petitions have passed through my hands where addresses and dates were duplicated by ditto marks. I also cannot tell you the number of times I’ve seen the petition circulator fill in information that was not supplied (such as city).
On the other hand, zip codes are not required. In any case, I can’t wait until Sunday when I can get my hands on these.