Sen. John Fetterman (D-PA) explicitly said on Wednesday that he will not be joining the Republican Party amid growing speculation that he will leave the Democratic Party.

“I’m not going to be a Republican, and I would just remind anybody that I’ve been very clear on that,” Fetterman said in a clip highlighted by Mediaite.

Last week, Senate Majority Leader John Thune (R-S.D.) said he’s had conversations with Fetterman and “would welcome him” if he decides to join the GOP.

“I have had conversations with him in the past as have many of my colleagues about the challenges he faces in his caucus. And there are many of us who, I think, would welcome the opportunity to have him join the Republican conference but ultimately that’s a decision that’s up to him,” Thune told reporters.

But Fetterman said he doubts he would be welcomed in the Republican Party.

“I don’t think that Republican Party wants a pro-choice, pro-gay, trans communities, federal union, and you look at my voting records… I disagree with my party on some issues like Israel, for example,” he said. “But you know, I am a Democrat, and if someone is frustrated in the Democratic Party, I would be frustrated with someone like Bernie Sanders.”

Asked on Wednesday if he wants Fetterman to remain a Democrat, Sen. Chuck Schumer (D-N.Y.) responded: “Yes, and he is a very good member of Congress.”

“People in our caucus very much like him and respect him and we’re a big-tent party. We can have a lot of different views in that party,” Schumer said.

A Quinnipiac University poll of voters in Pennsylvania earlier this month found that Fetterman has a higher approval rating among Republicans than Democrats, and 52 percent of Democrats said they would like to see Fetterman leave the Democratic Party.