The U.S. Supreme Court’s handling of two cases alleging partisan gerrymandering is expected to spur even more legal action over the constitutionality of crafting electoral maps that tend to favor one political party.

Opponents of gerrymandering were hoping the Wisconsin and Maryland cases involving partisan gerrymandering would provide a new legal standard for how far a majority party can go in drawing political boundaries to their own benefit.

But the high court instead declined to get involved, sending the Wisconsin case back to the lower court and leaving undisturbed another federal court ruling that allowed a disputed congressional map in Maryland to be used in the 2018 mid-term election.

Read more: McClatchy, June 19, 2018