The Supreme Court will allow absentee ballots in North Carolina to be received and counted up to 9 days after Election Day, in a win for Democrats.
The justices on Wednesday refused to disturb a decision by the State Board of Elections to lengthen the period from three to nine days, pushing back the deadline to November 12.
The board's decision was part of a legal settlement with a union-affiliated group.
Under the Supreme Court's order, mailed ballots postmarked on or before Election Day must be received by 5 pm on November 12 in order to be counted.
Three conservative justices, Samuel Alito, Neil Gorsuch and Clarence Thomas, dissented.
New Justice Amy Coney Barrett took no part in the case.
