What follows is an opinion from the Supreme Court of the United States. Your task is to determine the bases on which the Supreme Court rested its decision with regard to the legal provision that the Court considered in the case. Consider "judicial review (national level)" if the majority determined the constitutionality of some action taken by some unit or official of the federal government, including an interstate compact. Consider "judicial review (state level)" if the majority determined the constitutionality of some action taken by some unit or official of a state or local government. Consider "statutory construction" for cases where the majority interpret a federal statute, treaty, or court rule; if the Court interprets a federal statute governing the powers or jurisdiction of a federal court; if the Court construes a state law as incompatible with a federal law; or if an administrative official interprets a federal statute. Do not consider "statutory construction" where an administrative agency or official acts "pursuant to" a statute, unless the Court interprets the statute to determine if administrative action is proper. Consider "interpretation of administrative regulation or rule, or executive order" if the majority treats federal administrative action in arriving at its decision.Consider "diversity jurisdiction" if the majority said in approximately so many words that under its diversity jurisdiction it is interpreting state law. Consider "federal common law" if the majority indicate that it used a judge-made "doctrine" or "rule; if the Court without more merely specifies the disposition the Court has made of the case and cites one or more of its own previously decided cases unless the citation is qualified by the word "see."; if the case concerns admiralty or maritime law, or some other aspect of the law of nations other than a treaty; if the case concerns the retroactive application of a constitutional provision or a previous decision of the Court; if the case concerns an exclusionary rule, the harmless error rule (though not the statute), the abstention doctrine, comity, res judicata, or collateral estoppel; or if the case concerns a "rule" or "doctrine" that is not specified as related to or connected with a constitutional or statutory provision. Consider "Supreme Court supervision of lower federal or state courts or original jurisdiction" otherwise (i.e., the residual code); for issues pertaining to non-statutorily based Judicial Power topics; for cases arising under the Court's original jurisdiction; in cases in which the Court denied or dismissed the petition for review or where the decision of a lower court is affirmed by a tie vote; or in workers' compensation litigation involving statutory interpretation and, in addition, a discussion of jury determination and/or the sufficiency of the evidence.

Opinion:
BURNS et al. v. FORTSON, SECRETARY OF STATE OF GEORGIA, et al.
No. 72-901.
Decided March 19, 1973
Per Curiam.
By statute, Georgia registrars are required to close their voter registration books 50 days prior to November general elections, except for those persons who seek to register to vote for President or Vice President. Ga. Code Ann. §§ 34-611 and 34-602. The District Court upheld the registration cutoff against appellants’ constitutional attack based upon this Court’s decision in Dunn v. Blumstein, 405 U. S. 330 (1972). This appeal followed.
The State offered extensive evidence to establish “the need for a 50-day registration cut-off point, given the vagaries and numerous requirements of the Georgia election laws.” Plaintiffs introduced no evidence. On the basis of the record before it, the District Court concluded that the State had demonstrated “that the 50-day period is necessary to promote . . . the orderly, accurate, and efficient administration of state and local elections, free from, fraud.” (Footnote omitted.) Although the 50-day registration period approaches the outer constitutional limits in this area, we affirm the judgment of the District Court. What was said today in Marston v. Lewis, ante, p. 679, at 681, is applicable here:
“In the present case, we are confronted with a recent and amply justifiable legislative judgment that 50 days rather than 30 is necessary to promote the State’s important interest in accurate voter lists. The Constitution is not so rigid that that determination and others like it may not stand.”
The judgment of the District Court is
Affirmed.
Section 34-611 was enacted in 1964. At present, Georgia has no independent durational residency requirement. The State’s statutory requirement of one year in the State and six months in the county (see Ga. Code Ann. §34-602) was held unconstitutional in Abbott v. Carter (No. 15689, ND Ga. 1972).

Question: What is the basis of the Supreme Court's decision?

Choices:
judicial review (national level)
judicial review (state level)
Supreme Court supervision of lower federal or state courts or original jurisdiction
statutory construction
interpretation of administrative regulation or rule, or executive order
diversity jurisdiction
federal common law

Answer: 1