Florida Republicans approved a new congressional map that severely curtails Black voting power in the state on Thursday, taking a final vote as Black lawmakers staged a sit-in on the floor of the legislature.

The new plan, which was drawn by Governor Ron DeSantis, gives Republicans a significant boost in the state and is one of the most aggressively gerrymandered maps passed in recent months. Republicans would be expected to win 20 of the state’s 28 congressional districts, a four seat increase from the 16 they hold now. It also eliminates two of four districts where Black voters have been able to elect the candidate of their choice.

DeSantis is expected to sign the districts into law, and lawsuits challenging the maps are immediately expected.

“We are plainly in this map denying minority voters the ability to elect the representative of their choice,” said state representative Fentrice Driskell, a Democrat who represents the Tampa area.

Black Democratic lawmakers halted the final debate of the bill Thursday morning just before noon. They took over the floor of the legislature, leading prayer and chants. One member, state representative Dianne Hart, was seen wiping tears from her eyes during the protest, according to the Miami Herald.

The Sergeant at Arms removed an Associated Press photographer from the floor of the legislature while the demonstration was ongoing, the Miami Herald reported. The legislature reconvened and held a final vote on the maps while the protest was continuing, according to The Tributary.

A focal point of the new maps has been the way it eliminates the fifth congressional district, which stretches from Jacksonville to Tallahassee. 46% of that district is currently Black, and it is represented by Al Lawson, a Black Democrat. DeSantis has openly called for getting rid of the district, saying it is unusually shaped and was unlawfully drawn based on race. After vetoing a proposal that would have allowed Black voters in Jacksonville to continue to elect the candidate of their choice, DeSantis’s map breaks up the district into four pieces in which Black voters comprise a much smaller share of the population.

DeSantis and lawyers from his office have said the law allows them to dismantle the district, voting rights experts have said the plan brazenly disregards laws designed to protect the interests of minority voters.

Republicans would be favored to win all of those districts.

At one point during the debate on Thursday, Representative Randy Fine, a Republican who was the vice-chair of the redistricting committee, explained why he was opposed to drawing districts that prevented minorities from electing candidates of their choice if they don’t comprise a majority of voters.

“When we guarantee that a group of people gets to select the candidate of their choice, what we’re saying is we’re guaranteeing that those who aren’t part of that group get no say. Chew on that one for a little bit,” he said. The 1965 Voting Rights Act was designed to prevent this kind of voting discrimination, ensuring that lawmakers could not split up sizable and compact minority communities to dilute their vote.

“They’re trying to see what they can get away with,” said Stuart Naifeh, a lawyer at the NAACP Legal Defense and Educational Fund. “It’s pretextual to say that the district doesn’t make sense. He wants to dismantle a Democratic district, and in this case a Democratic district that’s been held for a Black person for a long time and that’s a majority-minority district. So it’s concerning that he’s diluting minority voting strength.”

“It seems like it’s got all the hallmarks of intentional discrimination,” he said.