Yes, this may be a good idea. We're thinking of getting a robust AP that can handle 200 or so clients and have them access as website supplemented with SMS messaging. Specifically, there was some FOSS software from Michigan mentioned in a comment further down that can work with smartphone apps, a web site, and SMS. We're really interested in using electronics over paper, which many commentators seem to prefer, because getting realtime results and feedback can make these events much more interesting and interactive. Waiting for 15 minutes to count ballots can make the kids lose their interest. I'm really pleased with all the helpful suggestions, thanks again!