Upholding a judge’s decision that sided with former U.S. Sen. Bill Nelson and national Democrats, the U.S. Court of Appeals for the Eleventh Circuit ruled that a Florida law requiring voters’ signatures on mail-in ballots to match the signatures on file with elections officials imposes “a serious burden on the right to vote.”

Friday’s 2-1 opinion came more than three months after the November election in which former Republican Gov. Rick Scott narrowly edged out Nelson in one of the country’s most closely watched Senate campaigns.