NASHVILLE, Tenn. (AP) — Republicans in several Southern states pressed ahead with an aggressive election-year redistricting effort Wednesday, undeterred by demonstrations and objections to their plans to reshape majority-Black congressional districts that have suddenly become susceptible because of a U.S. Supreme Court ruling.

When protesters interrupted a Tennessee Senate committee hearing, lawmakers suspended their work while state troopers cleared the room. They then relocated to another room where the only members of the public allowed were reporters.

Emotions also ran high Wednesday in Alabama, where Republican lawmakers are considering a means of upending their primary elections if courts allow them to switch their U.S. House districts. In South Carolina, Democrats chided Republican colleagues for abiding by President Donald Trump's desires as they took initial steps toward redrawing a district long held by a Black Democratic lawmaker.

The stakes are high for minority voters who stand to lose their preferred representatives and for any Republican lawmakers reluctant to follow Trump's wishes. In Republican primary elections Tuesday, Trump-endorsed challengers defeated at least five of the seven Indiana state lawmakers targeted by Trump's allies for refusing to support a congressional redistricting effort last year.

The Supreme Court ruled last week that Louisiana relied too heavily on race when creating a second Black-majority House district as it attempted to comply with the Voting Rights Act. The ruling significantly altered a decades-old understanding of the law, giving Republicans in Louisiana and elsewhere grounds to try to eliminate majority-Black districts that have elected Democrats.

The ruling intensified an already fierce national redistricting battle ahead of a November midterm election that will determine control of the closely divided House.

Since Trump prodded Texas to redraw its U.S. House districts last year, eight states have adopted new congressional districts. From that, Republicans think they could gain as many as 13 seats while Democrats think they could gain up to 10. But some of the new districts could be competitive in November, meaning the parties may not get all they sought.

Tennessee plan splits up Memphis district

Republicans on Wednesday proposed a new U.S. House map that would split Memphis’ home of Shelby County into three districts, instead of the current two. The map would break up Tennessee’s lone Democratic-held U.S. House district, centered on the majority-Black city, creating a ripple effect of alterations to districts throughout the western and central parts of the state.

“Tennessee is a conservative state, and our congressional delegation should reflect that. This bill ensures it does,” said Republican state Sen. John Stevens, who is spearheading the legislation.

To adopt new House districts, Tennessee lawmakers also are seeking to repeal a state law prohibiting mid-decade redistricting.

Democrats and civil rights activists denounced the efforts during legislative committee hearings Wednesday.

The proposed plan “is Black vote dilution at an industrial scale,” said Sekou Franklin, a political science professor at Middle Tennessee State University who is part of the Tennessee branch of the NAACP.

Protesters interrupted a Senate committee hearing, loudly chanting “Hands off our vote!” After senators suspended the hearing, state troopers cleared people from the room. Senators resumed their work elsewhere, advancing the legislation.

Later Wednesday, protesters in the hallway beat on the walls and doors of a committee room were senators were meeting.

The candidate qualifying period in Tennessee ended in March, but legislation would reopen it to allow new candidates to join the races and existing candidates to switch districts. The primary election is scheduled for Aug. 6.

Democrats noted that the state Supreme Court in April 2022 rejected a challenge to the current congressional map, finding that it was too close to the election to make changes. This year, there’s even less time before the primary elections, raising the potential of confusion for both candidates and voters, Democrats said.

South Carolina to test its will for redistricting

Democratic U.S. Rep. Jim Clyburn has represented South Carolina’s 6th Congressional District since it was redrawn in 1992 to favor minority voters. He’s running for an 18th term. But winning reelection could be harder for him if Republicans redraw his district.

A committee on Wednesday easily passed a proposal that could allow South Carolina lawmakers to consider drawing new congressional districts, setting up a showdown on the state House floor later in the day.

The resolution would require a two-thirds vote to pass. Republicans have a supermajority, but some are concerned that an attempt to redraw the map to eliminate the state's lone Democratic representative could backfire and create up to two districts where Democrats are competitive.

Democratic state Rep. Spencer Wetmore said the redistricting effort reveals cynical politics focused more on winning for a narrow group than on helping all people.

“Daddy Trump calls and needs to grasp at some power, and once again we jump,” she said.

The state’s primaries are June 9, and early voting starts in three weeks.

Alabama looks at setting a new primary

The state House on Wednesday began debating legislation to enable special congressional primaries in case the federal courts permit Alabama to switch U.S. House maps before the midterms.

Alabama is seeking to lift a federal court injunction that ordered it to have two districts where Black voters are the majority, or close to it, and instead use a map with only one such district. It would substantially alter the district now represented by Rep. Shomari Figures, a Black Democrat who was elected in 2024 under the court-ordered map.

The proposal stirred fiery debate as Black legislators said the moment calls back to the state’s shameful Jim Crow-era history.

“It’s a tragic step backward for Black Alabama voters. But we’ve been here before, and we will not give up this fight,” said state Rep. Adline Clarke, a Democrat from Mobile.

Alabama's proposal hinges on the U.S. Supreme Court or a federal district court agreeing to lift the injunction.

“We’re going to be ready if the court hands down a favorable ruling,” said Republican state Rep. Chris Pringle, who sponsored the bill.

Alabama’s primaries are scheduled for May 19. If a court grants the state’s request, the legislation would ignore the results of that primary and direct the governor to schedule a new primary under the revised districts.

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Chandler reported from Montgomery, Alabama; Collins from Columbia, South Carolina; and Lieb from Jefferson City, Missouri. Associated Press reporter Kristen Hall contributed.