An official-looking envelope arrived in the mail on Friday. It came from the Voter Participation Center — a shadowy left-wing group — and contained threatening language. “Remember, who you vote for is private, but whether or not you voted is public record,” wrote VPC President Tom Lopach in the letter. “We’re sending this mailing to you and your neighbors to share who does and does not vote in an effort to promote election participation.” The mailer was addressed to my wife. It included a chart with her name, our Michigan address, and her supposed voting record from 2016 to 2022....