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Court Case Tracker

Current Partisan Gerrymandering Cases

Major partisan gerrymandering cases are ongoing in Maryland, Wisconsin, and North Carolina. Find summaries of those cases and related court documents here.

Published: April 26, 2017

Gill v. Whitford 

United States Supreme Court (No. 16–1161)

The plaintiffs, 12 Wisconsin residents who historically have voted Democratic, filed a lawsuit on July 8, 2015 in the U.S. District Court for the Western District of Wisconsin challenging the legislative district plan drawn by the Republican-controlled legislature following the 2010 Census. They argue the map is unconstitutional because it discriminates against Democratic candidates and voters on the basis of their political beliefs, violating the Equal Protection Clause of the Fourteenth Amendment, and because it burdens their First Amendment rights of association and speech.

Earlier this year, on April 7, the three-judge federal panel ruled unanimously to allow the case to proceed to trial, marking the first time in three decades that partisan gerrymandering claims survived a motion to dismiss. The trial was held in late-May and posed two major questions for the court. The first was whether the Wisconsin state house plan had been drawn with discriminatory partisan intent. Second, assuming there was intent, the trial turned to whether the maps had a constitutionally discriminatory effect — an issue that courts have thus far been unable to develop a simple test to resolve.

The trial provided a key initial test for the efficiency gap, a proposed standard for determining discriminatory effect that counts the number of votes each party wastes in an election to determine whether either party enjoyed a systematic advantage in turning votes into seats.

On November 21, 2016, the panel issued a 2–1 opinion holding that Wisconsin’s legislative plan was an unconstitutional partisan gerrymander because it resulted in excessive partisan asymmetry that could not be explained by neutral factors such as political topgraphy. Shortly thereafter, the panel ordered the Wisconsin Legislature put a remedial plan in place by November 1, 2017. 

Wisconsin filed an appeal on February 24, 2017, asking the Supreme Court to review the decision striking down the map. 

Key pleadings for Gill v. Whitford can be found here.


Benisek v. Lamone (formerly known as Shapiro v. McManus)

United States District Court for the District of Maryland (No. 13-cv-3233)

A group of Maryland voters filed a complaint in the U.S. District Court for the District of Maryland on November 5, 2013 challenging the congressional redistricting plan enacted by the Democratic-controlled Maryland General Assembly following the 2010 Census.

In their amended complaint, plaintiffs claimed that Maryland’s 6th Congressional District was a partisan gerrymander that violated their representational rights guaranteed by Article I of the U.S. Constitution and their First Amendment right of political association. Until the 2011 redistricting, the Sixth District routinely sent a Republican to Congress; afterward, the district flipped, going to the Democratic side. Under the plaintiffs’ theory of the case, the Democratic-controlled legislature engineered this flip in an attempt to punish Republican voters for casting their ballots in favor of their preferred Republican candidates.

On August 24, 2016, the panel denied the state defendants’ motion to dismiss in a 2–1 decision, holding that the plaintiffs had adequately alleged a claim that they had been disfavored and punished for exercising their First Amendment rights. The parties are now proceeding with discovery, with a trial in the case expected in late summer or early fall 2017.

Key pleadings for Benisek v. Lamone can be found here.


Harris v. Cooper 

United States Supreme Court (No. 16–166)


Common Cause v. Rucho

United States District Court for the Middle District of North Carolina (No. 1:16-CV-1026)


League of Women Voters v. Rucho

United States District Court for the Middle District of North Carolina (No. 1:16-CV-1164)

Race and politics collided in North Carolina this cycle, presenting courts with both racial and partisan gerrymandering claims.

On October 24, 2013, plaintiffs in Harris v. McCrory filed suit alleging that North Carolina packed African-American voters into the 1st and 12th Congressional Districts when it redrew its congressional district lines in 2011. The district lines, they argued, diluted African-American voting power and violated the Equal Protection Clause of the Fourteenth Amendment. In early February, the three-judge panel agreed and struck down the state’s congressional map as an unconstitutional racial gerrymander.

After the ruling, the state defendants appealed. Meanwhile, the North Carolina legislature held an emergency special session where it redrew the map. However, in redrawing maps, legislative leaders adopted rules that required proposed maps to maintain the state’s partisan balance of 10 Republican and 3 Democratic seats. A key legislative leader stated on the floor that, “I acknowledge freely that this would be a political gerrymander, which is not against the law.” The challengers filed objections to the remedial plan claiming the new map was doubly defective. Not only did the legislature fail to fix the deficiencies with the original map, they argued, but it also added an unconstitutional partisan gerrymander to the still-existing racial gerrymander.

The court denied the plaintiffs’ objections on June 2, 2016. In the short eight-page opinion, the court said its “hands appear to be tied” given the lack of a judicially management standard to evaluate partisan gerrymandering claims. However, the court emphasized that its ruling was not an endorsement of, nor does it prevent further challenges to, the state’s remedial plan.

The plaintiffs have appealed the district court’s ruling on the 2016 remedial map to the Supreme Court. The Court is expected to decide some time before June whether to accept the case for argument. It is possible, however, that the Court will delay any decision or action on the partisan gerrymandering claims in Harris until it has decided the state defendants’ racial gerrymandering appeal.

In the meantime, Common Cause and the League of Women Voters have filed suits in district court also challenging the constitutionality of the 2016 remedial plan. Both cases have been consolidated and the trial is scheduled to begin on June 26, 2017. 

Key pleadings for Harris v. Cooper can be found here.

Key pleadings for Common Cause v. Rucho can be found here.

Key pleadings for the League of Women Voters v. Rucho can be found here.