Indiana Sen. Joe Donnelly Joseph (Joe) Simon DonnellyTrump meets with potential Supreme Court pick Amy Coney Barrett at White House Names to watch as Trump picks Ginsburg replacement on Supreme Court Momentum growing among Republicans for Supreme Court vote before Election Day MORE (D) said Wednesday that he "misspoke" while discussing minority employees on his staff during a debate Tuesday night.

“Our state director is Indian American, but he does an amazing job. Our director of all constituent services, she’s African American, but she does an even more incredible job than you could ever imagine," Donnelly said during the debate with Republican challenger Mike Braun.

Donnelly was criticized for suggesting that those staff members succeeded despite their race.

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Donnelly told The Washington Post and CNN in statements Wednesday that he meant to use the word "and" instead of "but."

"I misspoke. I meant to say 'and' instead of 'but.' That would have communicated what I have tried to do my entire life: that I make a habit to seek out and promote people of color for both my campaign and official staff," he said.

Donnelly didn't immediately return a request for comment from The Hill.

Donnelly has also come under fire by his opponents for saying during the debate that he would be open to legislation ending birthright citizenship.

The incumbent senator, one of ten Senate Democrats up for reelection in states that President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE won in 2016, is considered vulnerable in next week's midterm. The Cook Political Report rates the race between him and Braun as a toss-up.