Gill v. Whitford, 585 U.S. ___ (2018), was a United States Supreme Court case involving the constitutionality of partisan gerrymandering. Other forms of gerrymandering based on racial or ethnic grounds had been deemed unconstitutional, and while the Supreme Court had identified that extreme partisan gerrymandering could also be unconstitutional, the Court had not agreed on how this could be defined, leaving the question to lower courts to decide. That issue was later resolved in Rucho v. Common Cause, in which the Court decided that partisan gerrymanders presented a nonjusticiable political question.