Democratic Pennsylvania Sen. John Fetterman made a surprise appearance Wednesday night at the Republican Party’s convention in Dallas, where he highlighted his relationship with President Donald Trump and Republican Sen. Dave McCormick and their efforts to help America’s steel industry. Opening his remarks, Fetterman acknowledged his presence at the GOP event by saying, “Yes, I’m a Democrat. Why am I here…?” He described himself as a “common sense Democrat” and said he stood for America while rejecting “the extremes, socialism, and anti-American ways of life.” Fetterman also praised McCormick, calling him “the kind of senator that gets the job done” and describing him as a great friend despite the two senators belonging to different parties. He then introduced McCormick. Fetterman highlighted bipartisan efforts to support Pennsylvania’s steel industry and what he called the “steel way of life” in the state. He also said he was willing to work with Trump on those efforts. While he did not announce his intention to switch parties, Fetterman used the speech to distance himself from socialism in the Democratic Party’s left wing. His appearance put a Democratic senator in a supporting role at the GOP’s showcase campaign event fewer than eight weeks before the November 3 midterm elections. Fetterman made the remarks while introducing McCormick, who also represents Pennsylvania in the Senate as a Republican. McCormick helped arrange the appearance and has been friendly with Fetterman for months. Democrats are expected to view the appearance as political mutiny, while it could further fuel questions over whether Fetterman will eventually leave the Democratic Party before he is up for reelection in 2028. The appearance would also be a major boost for Trump, who has long embraced efforts to win over former Democrats. Fetterman, a first-term Democrat, has increasingly warmed to Trump and become deeply unpopular with voters in his own party, including in Pennsylvania. He has praised Trump’s defense of Israel as many Democrats have criticized Israel’s actions in Gaza. Fetterman has also won support among Republicans who have welcomed his willingness to criticize members of his own party. A recent New York Times/Philadelphia Inquirer/Siena University poll found Fetterman was viewed more favorably by Republicans in Pennsylvania than McCormick. The shift has raised concerns about Fetterman’s political future. Pennsylvania operatives from both parties told Axios that he has no path to surviving a Democratic primary in 2028. Fetterman has not said whether he will seek reelection, while several prominent Pennsylvania Democrats are already considering potential challenges. Fetterman previously said in July that he would leave the Democratic Party only if it became “the anti-Israel party.” At the time, he said, “I'm never changing my party,” except under that condition. Around the same time, Fetterman and McCormick formed a joint fundraising committee, an unusual arrangement for senators from opposing parties. Republican leaders have also worked to cultivate Fetterman as his relationships with Democratic officials have deteriorated.