Many ballots contain icons to help voters along. Arrows, for instance, were key to understanding the infamous “butterfly” ballots in Palm Beach County, Fla., in the 2000 presidential race.

Provisional ballots account for a small fraction of votes in Pennsylvania, but they can be decisive in close races.

For example, in the spring elections — both primaries and municipal elections, including runoffs — turnout ranged between 4% and 12%, according to Dallas County returns.

Here's what you need to know before cheesing with your ballot. In these states, you can take pictures with your own ballot at the polls. Here's a look at the states where you're good to go if you ...