Justices To Pay Attention Fundamental Challenge To Partisan Gerrymandering

Packing a lot of Democrats into a single district, for instance, wastes every Democratic vote beyond the bare majority needed to elect a Democratic candidate.
Cracking, or spreading, Democratic voters across districts in which Republicans have small majorities wastes all of the Democratic votes when the Republican candidate wins.
The new standard proposed by the challengers tries to measure the level of partisan politics in legislative maps by counting “wasted votes” that result from the two basic ways of injecting partisan politics into drawing legislative maps: packing and cracking.
The Wisconsin voters who sued to challenge the Assembly map argued that gaps over 7 percent violate the Constitution.
The difference between the two parties’ wasted votes, divided by the total number of votes cast, yields an efficiency gap, they wrote.

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