Vieth v. Jubelirer, 541 U.S. 267 (2004), was a United States Supreme Court ruling that was significant in the area of partisan redistricting and political gerrymandering. The court, in a plurality opinion by Justice Antonin Scalia and joined by Chief Justice William Rehnquist and Justices Sandra Day O'Connor and Clarence Thomas, with Justice Anthony Kennedy concurring in the judgment, upheld the ruling of the District Court in favor of the appellees that the alleged political gerrymandering was not unconstitutional. Subsequent to the ruling, partisan bias in redistricting increased dramatically in the 2010 redistricting round.