Updated 12:50 p.m. | The Supreme Court sidestepped a major ruling on partisan gerrymandering on Monday, leaving open the question of whether federal courts can decide if congressional or statehouse maps give one political party an advantage over another.

Voter rights groups and political parties saw potential for a blockbuster ruling in two cases, which could have changed the way states draw maps ahead of redistricting following the 2020 census. A decision to allow partisan gerrymandering claims could have unleashed district courts across the country to review political maps.

In a case challenging Wisconsin’s statehouse map, the Supreme Court ruled that the voters who filed the lawsuit did not have the legal right to bring the case. But seven of the justices also voted to send the case back to the district court to give the Wisconsin voters a chance to establish standing.

The justices also ruled narrowly in a second case about a Maryland congressional district, kicking the case back to a district court on procedural grounds with little comment and no notable dissents. The decision means the state’s congressional maps won’t be redrawn ahead of this year’s midterms. There was little chance of that anyway, since Maryland primaries are set for June 26.