Among the several opinions handed down today, the Supreme Court ordered the recusal of a West Virginia Supreme Court justice due to the excessive independent campaign expenditures made by the CEO of a company in a case before that court. The majority opinion was written by Justice Kennedy, and joined by the four liberal justices. Chief Justice Roberts wrote a dissent on behalf of the Court's conservatives. Justice Scalia also wrote a separate dissent. The opinion is here. SCOTUSBlog has an early summary here.