The Polling Place Photo Project is a nationwide experiment to document the local voting experience on November 7. Participants can contribute to "an archive of photographs that captures the richness and complexity of voting in America."
At the same time, Videothevote.org, a national voter advocacy group, is sending volunteers to Arizona and six other states (Florida, Pennsylvania, Michigan, Ohio, New Jersey and Maryland) to check out complaints and videotape voting irregularities.
According to the Arizona Secretary of State's office, state law restricts non-voters from being within 75 feet of a polling area, although there are exceptions. It's not clear whether it is legal for voters themselves to take a picture as part of their voting experience, but given the prevelance of small digital devices, it's likely such pictures may wind up being taken anyway.