Some Pennsylvania voters have received letters publicising whether they had voted in previous elections before they head to the polls on Tuesday. The letters appeared to be intended to "embarrass" people into voting by revealing their voting record compared to that of friends and neighbours.
The flyers were sent by a group called the Pennsylvania State Voter Program, which is not government-affiliated. Pennsylvania is one of four US states holding primary elections on Tuesday. Nebraska, Idaho and Oregon residents are also casting their ballots in primary elections.
The letter, published by local news site Lancaster Online, does not show who an individual voted for in each election, but reveals whether or not they voted in the last three elections.
The information used in the letters comes from a public registry that costs $20 (£15) to access. This data is typically used by political parties for voter outreach. "What if your friends, your neighbours, and your community knew whether you vote?" the letter asks.
At the bottom of the letter, a table shows the names, addresses and voting history from the November 2014, March 2016 and November 2016 elections for the addressee's friends and neighbours.