President Trump on Monday described Democratic candidates in the midterm elections as “jihadists,” adding to Islamophobic statements recently made by Republican elected officials.

White House officials did not respond to requests for comment about Mr. Trump’s statements on Monday, and about how the comments could alienate Muslims in the United States.

Throughout his rise in politics, Mr. Trump has vilified Muslims and people of Arab descent, stoking anger among his backers and building support for immigration restrictions, including banning Muslims from the United States. But in the past few months, anti-Muslim rhetoric has become increasingly normalized in the ranks of the G.O.P., particularly after the election victories of prominent Muslim politicians, including Zohran Mamdani in the New York City mayoral race and Dr. Abdul El-Sayed in the Michigan Senate primary last week.

Mr. Trump has declined to condemn such rhetoric, and, as was the case on Monday, has leaned into it.

While the president did not name a specific candidate, his rant came two days after he posted on social media an image of himself with the first lady, Melania Trump, next to an image of Dr. El-Sayed and his wife. The text above the image read: “Two VERY DIFFERENT America’s.”