A left-leaning legal organization filed a challenge to Wisconsin’s congressional maps at the state Supreme Court on Wednesday, just one month after a judge described by critics as “dangerously liberal” was elected to the bench.

The lawsuit, brought by the Elias Law Group on behalf of nine Wisconsin voters, alleges that the maps were drawn to dilute the voting power of Democrats and unfairly benefit Republicans.

“Wisconsin’s congressional map is antithetical to virtually every principle necessary to sustain a representative democracy,” the suit alleges. “It impermissibly disadvantages voters based on their political views and partisan affiliation, systematically disfavoring Democrats because they are Democrats.”

The lawsuit calls on the court to implement a “lawful” congressional map to replace the current one. Wisconsin’s congressional delegation currently consists of eight seats, with six held by Republicans and two by Democrats. The Elias Law Group—founded by prominent Democratic attorney Marc Elias, known for his frequent challenges to election integrity laws and ties to the bogus ‘Steele Dossier’ used to falsely claim President Trump ‘colluded’ with Russia to win the 2016 election—is leading the legal effort.

“This congressional map directly discriminates against Petitioners, who support Democratic candidates in Wisconsin and—because of that affiliation—are effectively silenced and shut out from casting a meaningful congressional vote,” the suit claims. “Wisconsin’s Constitution prohibits this injustice several times over. This Court should grant this original action and replace the adopted congressional map with a lawful alternative.”

Wisconsin GOP Chair Brian Schimming stated that the lawsuit was a desperate attempt to seize power.

“No one is surprised that liberal Mark Elias is challenging Wisconsin’s Congressional maps,” he said in a statement. “This politically motivated lawsuit is a desperate attempt by far-left Democrats who have shown time and time again that they can’t win without rigged maps.”

The legal challenge follows a highly contentious Wisconsin Supreme Court election in April, which saw conservative candidate Brad Schimel face off against liberal Judge Susan Crawford. The race, which became the most expensive judicial contest in U.S. history, ended with Crawford winning 55% of the vote.

Congressional redistricting was a central issue in the campaign, with both Republicans and Democrats viewing the outcome as pivotal to the future of Wisconsin’s electoral maps.