dissenting.
When reviewing States’ redistrieting of their own legislative boundaries, we have been appropriately deferential. See Mahan v. Howell, 410 U. S. 315, 327 (1973). A seriés of our cases established the principle that “minor deviations” among districts — deviations of less than 10% — are “‘insufficient to make out a prima facie case of invidious discrimination under the Fourteenth Amendment so as.to require justification by the State.’” Brown v. Thomson, 462 U. S. 835, 842 (1983) (quoting Gaffney v. Cummings, 412 U. S. 735, 745 (1973)); see also Voinovich v. Quilter, 507 U. S. 146, 160-162 (1993). This case presents a question that Brown, Gaffney, and Voinovich did not squarely confront— whether a districting plan that satisfies this 10% criterion may nevertheless be invalidated on the basis of circumstantial evidence of partisan political motivation.
The state officials who drafted Georgia’s redistrieting plan believed the answer to that question was “no,” reading our cases to establish a 10% “safe harbor” with which they meticulously complied. The court below disagreed. No party here contends that, beyond grand generalities in cases such as Reynolds v. Sims, 377 U. S. 533, 577 (1964), this Court has addressed the question. The opinion below is consistent with others to have addressed the issue; there is no obvious conflict among the lower courts. This is not a petition for certiorari, however, but an appeal, and we should not summarily affirm unless it is clear that the disposition of this case is correct.
In my view, that is not clear. A substantial case can be made that Georgia’s redistrieting plan did comply with the Constitution. Appellees do not contend that the population deviations — all less than 5% from the mean — were based on race or some other suspect classification. They claim only impermissible political bias — that state legislators tried to improve the electoral chances of Democrats over Republicans by underpopulating inner-city and *952rural districts and by selectively protecting incumbents, while ignoring “traditional” redistricting criteria. The District Court agreed. See App. to Juris. Statement 8a-25a.
The problem with this analysis is that it assumes “politics as usual” is not itself a “traditional” redistricting criterion. In the recent decision in Vieth v. Jubelirer, 541 U. S. 267 (2004), all but one of the Justices agreed that it is a traditional criterion, and a constitutional one, so long as it does not go too far. See id., at 285-286 (plurality opinion); id., at 307 (Kennedy, J., concurring in judgment); id., at 344 (Souter, J., dissenting); id., at 355 (Breyer, J., dissenting). It is not obvious to me that a legislature goes too far when it stays within the 10% disparity in population our cases allow. To say that it does is to invite allegations of political motivation whenever there is population disparity, and thus to destroy the 10% safe harbor our cases provide. Ferreting out political motives in minute population deviations seems to me more likely to encourage politically motivated litigation than to vindicate political rights.
I would set the case for argument.