The Postal Service can for now move ahead with plans to restrict mail-in voting ahead of the midterm elections in November, after a federal judge on Wednesday lifted an order that had blocked it from carrying out Trump administration efforts. However, the judge left open the possibility that the Postal Service rule could be blocked again soon as legal challenges unfold, a process that is already underway.

The judge, Indira Talwani of the Federal District Court in Massachusetts, wrote that she felt compelled to act in response to a ruling from the Supreme Court on Monday that action by the courts was premature. She indicated that she may reconsider the issue after groups challenging the policy updated their legal arguments to reflect that the agency has now taken concrete steps to carry out an executive order from President Trump dealing with the issue.

Those updated arguments arrived on Wednesday, as a coalition of Democratic-led states filed a new lawsuit challenging the Trump administration’s mail-in ballot efforts. They argued that steps the Postal Service took on Friday to finalize its plans will harm them and their voters, making the issue now ripe for court action. Under its new plan, the Postal Service would not deliver mail ballots in states that do not share voter data with the agency and would deliver only ballots that meet certain criteria.

Later on Wednesday, Judge Talwani combined the pending cases before her and ordered the parties to submit their latest arguments by noon on Thursday. She could issue a new emergency ruling as soon as this week. She also scheduled a Sept. 3 hearing to consider arguments more fully and decide how to proceed.