A federal appeals court on Tuesday upheld an Ohio law that trims a week of early voting in the swing state, reversing a judge's decision that had restored the time.

Democrats had challenged a series of Republican-backed voting changes they claimed disproportionately burdened black voters and those who lean Democratic. Among the policies was the elimination of early voting days in which Ohioans could also register to vote, a period known as golden week.

The state's attorneys argued that scrapping the days helped alleviate administrative burdens for local elections officials while reducing costs and the potential of fraud. But plaintiffs, who include the state's Democratic Party, said the burden on voters outweighed any benefit to the state.

In a 2-1 decision, a panel of the 6th U.S. Circuit Court of Appeals in Cincinnati ruled the golden-week cut still allows for "abundant" opportunities to vote within a 29-day window. Prior to the law, Ohioans had a 35-day period.