The GAB has apparently decided that it is OK for people to circulate recall petitions at polling places inside the 100 foot buffer zone - subject to certain restrictions. That's a plausible interpretation of the law but not the only one.
Sec. 12.03(2)(b)1 provides that "[n]o person may engage in electioneering during polling hours on any public property on election day within 100 feet of an entrance to a building containing a polling place." Electioneering is defined as "any activity which is intended to influence voting at an election." Sec. 12.03(4)
In the context of this election, I am not sure that soliciting recall petitions isn't designed to influence voting. I am not sure I'd disagree with the GAB or would go the other way. I am generally loathe to support interpretations of the law that restrict speech or electoral advocacy.
I wouldn't be surprised if we start to see allegations that petition circulators are crossing the line.