A federal judge on Thursday blocked key provisions of an executive order signed by President Donald Trump that sought to limit which voters may receive mail ballots, handing the administration a setback in its effort to rewrite voting procedures through executive action.

The court's order halts enforcement of the relevant portions of the directive while litigation continues. The administration had argued the executive order fell within presidential authority over federal election administration. Plaintiffs challenging the order contended it exceeded that authority and conflicted with existing statute.

The ruling does not constitute a final judgment on the merits. The underlying case will proceed. The blocked provisions cannot take effect pending further court action.

The executive order was one of several election-related directives issued by the Trump administration. Judicial challenges to related orders are pending in additional venues. The administration has not indicated whether it will seek emergency relief from a higher court.