Primary turnout is way up this year compared with 2012. According to a recent Pew study, it's on pace to rival 2008's record of 30.4 percent. Still, less than a third of Americans will take part in the process.
Americans are really attached to their 'I voted' stickers
That doesn't mean they don't want to show off their participation. There's evidence on social media that voters denied their ubiquitous "I voted" sticker were none too pleased. Take a look at some of the reactions from Pennsylvania, Maryland and Delaware: