I went to a weekend concert of Sweet Honey in the Rock, who worked a number of pro-voting messages into their a cappella harmonies. Their advice: take your camera to the polls.

Given all the hoopla about voter suppression and voter fraud, as well as the new concerns about electronic voting systems, I think the advice is sound. Go with the assumption that you won't need it, but turn it on as you walk in the door. If something untoward happens, take a picture of it--a bad ballot, an intrusive political volunteer, a lengthy line--whatever prevents you from voting accurately and freely. If you have a digital camera with video capacities, capture it on video.