Elections: redistricting plan: Article I, §2, of the
United States Constitution requires that Members of the House of
Representatives “be apportioned among the several States . . . according to
their respective Numbers” and “chosen every second Year by the People of the
several States.” In Wesberry v. Sanders, 376 U. S. 1 (1964), we
held that these commands require that “as nearly as is practicable one man’s
vote in a congressional election is to be worth as much as another’s.” Id.,
at 7–8. We have since explained that the “as nearly as is practicable”
standard does not require that congressional districts be drawn with “precise
mathematical equality,” but instead that the State justify population
differences between districts that could have been avoided by “a good faith
effort to achieve absolute equality.” Karcher, supra, at 730
(quoting Kirkpatrick v. Preisler, 394 U. S. 526, 530– 531 (1969);
internal quotation marks omitted); Karcher set out a two-prong test to
determine whether a State’s congressional redistricting plan meets this standard.
First, the parties challenging the plan bear the burden of proving the
existence of population differences that “could practicably be avoided.” 462 U.
S., at 734. If they do so, the burden shifts to the State to “show with some
specificity” that the population differences “were necessary to achieve some
legitimate state objective.” Id., at 741, 740. This burden is a
“flexible” one, which “depends on the size of the deviations, the importance
of the State’s interests, the consistency with which the plan as a whole
reflects those interests, and the availability of alternatives that might
substantially vindicate those interests yet approximate population equality
more closely.” Id., at 741; as we recently reaffirmed, redistricting
“ordinarily involves criteria and standards that have been weighed and
evaluated by the elected branches in the exercise of their political judgment.”
Perry v. Perez, 565 U. S. ___, ___ (2012) (per curiam)
(slip op., at 4). “We are willing to defer to such state legislative policies,
so long as they are consistent with constitutional norms, even if they require
small differences in the population of congressional districts.” Karcher,
supra, at 740; State legislators expressed concern that the plan
contravened the State’s longstanding rule against splitting counties, placed
two incumbents’ residences in the same district, and moved one-third of the
State’s population from one district to another; S. B. 1008, codified at W. Va.
Code Ann. §1–2–3 (Lexis 2012 Supp.), does not split county lines, redistrict
incumbents into the same district, or require dramatic shifts in the
population of the current districts. Indeed, S. B. 1008’s chief selling point
was that it required very little change to the existing districts: it moved
just one county, representing 1.5% of the State’s population, from one district
to another. This was the smallest shift of any plan considered by the legislature.
S. B. 1008, however, has a population variance of 0.79%, the second highest
variance of the plans the legislature considered. That is, the population
difference between the largest and smallest districts in S. B. 1008 equals
0.79% of the population of the average district; given the State’s concession
that it could achieve smaller population variations, the remaining question
under Karcher is whether the State can demonstrate that “the population
deviations in its plan were necessary to achieve some legitimate state
objective.” 462 U. S., at 740. Considering, as Karcher instructs, “the
size of the deviations, the importance of the State’s interests, the
consistency with which the plan as a whole reflects those interests, and the
availability of alternatives that might substantially vindicate those
interests,” id., at 741, it is clear that West Virginia has carried its
burden; as an initial matter, the District Court erred in concluding that
improved technology has converted a “minor” variation in Karcher into a
“major” variation today. Nothing about technological advances in redistricting
and mapping software has, for example, decreased population variations between
a State’s counties. See id., at 733, n. 5. Thus, if a State wishes to
maintain whole counties, it will inevitably have population variations between
districts reflecting the fact that its districts are composed of un- evenly
populated counties. Despite technological advances, a variance of 0.79% results
in no more (or less) vote dilution today than in 1983, when this Court said
that such a minor harm could be justified by legitimate state objectives (U.S.S.Ct.,
25.09.12, Tennant v. Jefferson County, Per Curiam).
Elections : plans modifiant les limites des
circonscriptions électorales : la Section 2 de l’Art. I de la Constitution
fédérale demande que les membres de la Chambre des Représentants soient
répartis selon les différents états d’après leurs populations respectives, et
soient élus tous les deux ans par la population des états. La jurisprudence de
la Cour dispose qu’autant que possible, le vote d'une personne, dans les
élections au Congrès, équivaut au vote d’une autre personne. La jurisprudence
de la Cour a également précisé qu’il n’était pas imposé aux états de garantir
une égalité mathématique parfaite s’agissant de la population des différents
districts électoraux, mais qu’il incombait aux états de justifier des
différences de populations entre districts qui auraient pu être évitées par un
effort de bonne foi, lequel aurait pu permettre d’atteindre une égalité
absolue. La jurisprudence Karcher a mis en place un test comprenant deux questions
pour déterminer si un plan modifiant les limites des districts électoraux est
ou non conforme à la Constitution fédérale. Tout d’abord, les parties qui
contestent le nouveau plan doivent établir l’existence de différences de
populations qui auraient pu être évitées. Si cette preuve peut être apportée,
le fardeau de la preuve passe à l’état, qui doit démontrer que les différences
de population étaient nécessaires à l’aune d’objectifs étatiques légitimes. Ce
fardeau de la preuve est flexible : il dépend de l’importance des
déviations, de l’importance des intérêts invoqués par l’état, de la consistance
avec laquelle le plan dans son ensemble reflète ces intérêts, et de la
disponibilité de solutions alternatives susceptibles de remettre
substantiellement en cause lesdits intérêts de l’état tout en permettant un
rapprochement de l’égalité de populations entre les districts électoraux. Une
certaine déférence est accordée aux états s’agissant de questions politiques,
et des différences peu importantes seront difficilement remises en cause avec
succès. La loi considérée de l’état de Virginie ne fractionne pas les limites
de district, ne place pas un candidat dans le même district qu’un élu, et
n’impose pas de modifications importantes aux nombres de votants des différents
districts électoraux. En l’espèce, la différence de population entre le
district le plus peuplé et le district le moins peuplé équivaut à 0,79% de la
population du district moyen. Le plan de l’état de Virginie ne contrevient
ainsi en rien à la Constitution fédérale.