A group called Americans for Limited Government is sending letters to people encouraging them to vote by showing them the voting history of their neighbors.

The letter, which people have reported receiving in at least six competitive states, is presented in the form of a “vote history audit.”

It displays a chart showing whether the recipient and a handful of his or her neighbors cast ballots in 2004 and 2008. For 2012, the vote is listed as “pending.”

“Thank you for your dedication to voting in past presidential elections,” the form letter reads, according to a copy sent to a person in Pennsylvania and obtained by The Hill. “Our American democracy is stronger because of civic-minded citizens like you. We have conducted an audit of public voting records in your neighborhood and wanted to present you with findings of past civic participation in your community.”