Bush v. GoreChief Justice Rehnquist, with whom Justice Scalia and Justice Thomas join, concurring. [...]
In most cases, comity and respect for federalism compel us to defer to the decisions of state courts on issues of state law. That practice reflects our understanding that the decisions of state courts are definitive pronouncements of the will of the States as sovereigns. Cf.
Erie R. Co. v. Tompkins, 304 U. S. 64 (1938). Of course, in ordinary cases, the distribution of powers among the branches of a State's government raises no questions of federal constitutional law, subject to the requirement that the government be republican in character. See U. S. Const., Art. IV, §4. But there are a few exceptional cases in which the Constitution imposes a duty or confers a power on a particular branch of a State's government. This is one of them. Article II, §1, cl. 2, provides that "[e]ach State shall appoint, in such Manner as the
Legislature thereof may direct," electors for President and Vice President. (Emphasis added.) Thus, the text of the election law itself, and not just its interpretation by the courts of the States, takes on independent significance.
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If we are to respect the legislature's Article II powers, therefore, we must ensure that postelection state-court actions do not frustrate the legislative desire to attain the "safe harbor" provided by §5.
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In order to determine whether a state court has infringed upon the legislature's authority, we necessarily must examine the law of the State as it existed prior to the action of the court.