The Wisconsin Supreme Court has ordered that a pair of three-judge panels hear two lawsuits that argue the battleground state's congressional maps must be redrawn because they unconstitutionally favor Republicans.

A conservative law firm has challenged Wisconsin's congressional map lawsuits, arguing that new drawing districts now would violate federal law ahead of the midterm elections.

The Supreme Court is weighing whether to strike down federal limits on political party spending in coordination with candidates.

The ACLU brought the lawsuit against five county sheriffs in September on behalf of Voces de la Frontera, an immigrant rights group based in Milwaukee.