(TENNESSEE) -- As protesters accused them of racial gerrymandering, Tennessee state lawmakers passed into law on Thursday a new congressional map that could allow Republicans to flip the state’s lone Democratic-held seat, notching the GOP another win in the mid-decade redistricting scramble.

Republican Tennessee Gov. Bill Lee signed the bill into law Thursday afternoon.

The session was interrupted by chaotic scenes with lawmakers shouting over protesters' voices and at one point forcing police clear the balcony above the House floor before it voted on the new map.

The new map breaks up the state’s current 9th Congressional District, which is primarily made up of Memphis, and the state’s only majority-Black district. The district is currently represented by Democratic Rep. Steve Cohen.

The legislature also passed bills on Thursday that will allow the state to legally redistrict outside of the normal once-a-decade cycle, as well as providing funding to help implement the new map in time for the 2026 elections.

Impact on the midterms and representation in Congress

With the map passed, it paves the way for President Donald Trump and Republicans to gain an additional House seat in the next Congress, increasing their chances of maintaining control of the House as they continue their redistricting battle across the country.

Tennessee Democrats will likely not have any representation in Congress next year if Republicans flip the seat and the map will dilute the Black vote by breaking up Memphis.

But legal challenges against the map are expected.

Cohen said Thursday he will file a lawsuit against the new map.

Cohen posted on X after the vote "[President Donald] Trump knows he HAS TO rig the game to keep his majority in November. And the TN GOP was willing to go along with it. It’s shameful. Next stop is the courts."

Cohen had said earlier this week on CNN that the Republicans' redistricting effort was a foregone conclusion, adding that he hopes the new congressional map can take effect in 2028 rather than 2026. 

The speed at which the process occurred was remarkable -- it was only last week that the Supreme Court struck down Louisiana's congressional map as an unconstitutional racial gerrymander, dealing a blow to Section 2 of the Voting Rights Act. 

And just one day after the Supreme Court’s ruling in Louisiana v. Callais, Trump posted on Truth Social that he spoke with Lee and that the governor said he would work to redraw the state’s congressional maps in order to net another GOP seat for Tennessee in the House. Lee called a special session the next day, April 30, to review the state's congressional map.

Potential redistricting efforts are also currently underway in Louisiana, Alabama and South Carolina, although each state has different procedural or legal barriers to overcome.

With Tennessee's new map, Republicans potentially could flip 14 Democratic-held seats in Texas, Missouri, North Carolina, Ohio and Florida. Democrats could pick up 10 from new maps passed in California, Utah and Virginia.

Acrimonious debate and protests in the state capitol

The proposed congressional map underwent much acrimonious debate and protest inside the legislature on Thursday before it was passed.

On the House floor, Democratic representatives condemned the map, saying it would dilute the Black vote in the state. At one point, chants of "our house!" started in the House gallery.

As the vote came up for the new map on the House side, chaos erupted in the room. A trooper was asked to clear out the balcony above the House floor as people protested.

Earlier, Democratic State Rep. Justin Pearson, who is running for Congress in the 9th District that will be broken up on the new map, said that “what is happening here is immoral and wrong.”

“This is about attacking, targeting and cracking District 9 into pieces for more political and racial dominance and white supremacy in the state of Tennessee. And we need to realize that the Callais decision that you all are basing your decisions off of that gutted the Voting Rights Act, that that Voting Rights Act was paid in blood,” Pearson said.

Pearson later confronted law enforcement officers, ABC affiliate WKRN reported, as they worked on clearing the House gallery of protestors. Pearson later said his brother KeShaun Pearson was arrested.

After the House passed the bill and it was taken up in the Senate, Republican state Sen. John Stevens spoke in support of the new map over audible protests and yelling.

“Tennessee is a conservative state, and I submit its congressional delegation should reflect that. The proposed map ensures that,” Stevens said.

He later said, “This bill represents Tennessee's attempt to maximize our partisan advantage and allow Tennesseans to support a national Congress to be a Republican majority.”

But Democratic state Sen. London Lamar, who is Black, slammed the new map during debate as an attack on Black voters and said it “diminishes Memphis.”

“This map does not reflect Memphis. It diminishes Memphis. It slices our city into pieces and stretches our communities hundreds of miles away to places of different needs, different economies, different histories and different lived realities,” she said. “You cannot take a majority-Black city, fracture its voting power and then tell us race has nothing to do with it. Racism does not become less racist because it's called partisan.”

Later, chants of “Hands off Memphis!” rang out and another lawmaker soon unfurled a banner that read “NO JIM CROW 2.0 - STOP THE TN STEAL.”

The Senate passed the map soon after.

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