The mistake was by a different beginner

Looks like the poll-visiting kerfluffle threatening to sour Cherelle Parker's win this week (see here) was less a result of her first-timer mis-steps than of over-zealousness by the new head of the Committee of Seventy, Zach Stalberg (see background here):

The committee announced on Wednesday that it had asked the District Attorney's Office to investigate whether Parker's multiple visits inside several polling places Tuesday were against the state code.
. . .
The committee learned yesterday that the City Commissioners' Office had issued Parker a poll watcher's certificate, which allowed her to enter any polling place.

Oops! Then I guess that all those suspicious visits to polling places were, um, pre-approved! Guess if he wants to change local practices at the who-provides-lunch level, Stalberg should start by suggesting a better system, rather than trying to get somebody taken to court.