The Department of Justice on Thursday sued Galveston County over its new redistricting map, accusing Republican county officials of violating the Voting Rights Act last year when they carved up their Commissioners Court precincts into four majority-white districts.

The redrawn map dismantles the precinct represented by Commissioner Stephen Holmes, the only Democrat and minority member of the court, all but ensuring his defeat in 2024 if the map remains intact.

Under the new layout, Republicans are poised to gain a 5-0 majority on the governing body for Galveston County, where 38 percent of voters cast their ballots for Democrat Joe Biden.

In a 25-page complaint filed in the U.S. District Court for the Southern District of Texas, Justice Department officials alleged that Galveston County’s freshly drawn boundaries dilute the voting strength of Black and Hispanic voters, denying them “an equal opportunity to participate in the political process.” The lawsuit accuses the county of violating Section 2 of the Voting Rights Act, which broadly bars racially discriminatory voting practices, including those that minimize the voting strength of racial minority groups.