In Washington State Grange v. Washington State Republican Party (2008) 552 U.S. 442, the Supreme Court formally addressed the constitutionality of the top-two system, confirming it withstands the type of constitutional challenge asserted in California Democratic Party v. Jones (2000). The court rejected the argument, at least as a facial challenge, that an open nonpartisan primary was not materially different from a blanket primary because the prevailing candidate affiliated with a particular party in the nonpartisan primary would become the party's "de facto" nominee in the general election. (Washington State Grange, at pp. 452-453.)