New Hampshire banned such selfies in 2014, saying the photos could set the stage for a return of the kind of vote-buying or voter intimidation that was rampant in the 19th century.
The Supreme Court declined to hear the state's appeal of a ruling by the Boston-based 1st U.S. Circuit Court of Appeals last September that the law ran afoul of the U.S. Constitution's First Amendment, which guarantees free speech. The state cannot curtail speech based on a hypothetical danger, the appeals court stated.
Ballot selfies have become a popular way for voters to show support for favored candidates through postings on social media platforms such as Twitter, Facebook and Snapchat.