The Supreme Court declined Monday to overturn Wisconsin's heavily gerrymandered legislative districts, saying the plaintiffs didn't do enough to prove they had standing to bring the lawsuit.

The decision amounts to a punt on one of the most closely watched cases of the year, leaving for another day the big questions of how much partisanship is allowed when legislatures draw their maps.

Joe Kanefield, Practice Leader of Ballard Spahr's Political and Election Law Group and an election law attorney in Arizona, said while state courts like Pennsylvania's highest court have found partisan gerrymandering unconstitutional based on state law, it's still at square one in terms of how federal courts can tackle the problem.

Regarding the case in Wisconsin, Kanefield says "they should be able to get enough plaintiffs with standing to bring a challenge in every district, which effectively would result in a statewide challenge."

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