2 RUCHO v. COMMON CAUSE Opinion of the Court of the plaintiffs, and the defendants appealed directly to this Court. These cases require us to consider once again whether claims of excessive partisanship in districting are “justiciable”—that is, properly suited for resolution by the federal courts. This Court has not previously struck down a districting plan as an unconstitutional partisan gerrymander, and has struggled without success over the past several decades to discern judicially manageable standards for deciding such claims. The districting plans at issue here are highly partisan, by any measure. The question is whether the courts below appropriately exercised judicial power when they found them unconstitutional as well. I A The first case involves a challenge to the congressional redistricting plan enacted by the Republican-controlled North Carolina General Assembly in 2016. Rucho v. Common Cause, No. 18–422. The Republican legislators leading the redistricting effort instructed their mapmaker to use political data to draw a map that would produce a congressional delegation of ten Republicans and three Democrats. 318 F. Supp. 3d 777, 807–808 (MDNC 2018). As one of the two Republicans chairing the redistricting committee stated, “I think electing Republicans is better than electing Democrats. So I drew this map to help foster what I think is better for the country.” Id., at 809. He further explained that the map was drawn with the aim of electing ten Republicans and three Democrats because he did “not believe it [would be] possible to draw a map with 11 Republicans and 2 Democrats.” Id., at 808. One Democratic state senator objected that entrenching the 10–3 advantage for Republicans was not “fair, reasonable, [or] balanced” because, as recently as 2012, “Democratic con-

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