Democrat Haley Stevens endorses Republican Mike Rogers for the Senate in Michigan, two days before the vote

The break was already public before Sunday. Stevens lost the August primary to El-Sayed by one point, endorsed him afterward, and then fell out with his campaign in the final week. On October 30 she put out a long statement calling on El-Sayed to condemn an outside group's ad. His campaign then told her to stay away from his closing events, including a Detroit church appearance on Sunday that had been billed as a show of party unity.

Stevens went to a different church. She appeared with Rogers and his wife at Perfecting Church on Detroit's east side, praised his support for Black owned businesses from the front of the service, and then posted a two minute video. "Our Democratic nominee for U.S. Senate, Abdul, said that I was no longer welcome in his campaign and that I should stay away. And he's right," she said. "And that's why I am endorsing Mike Rogers for the United States Senate today. I don't belong in Abdul's campaign. I do not stand with Hasan Piker." She added that she is still a very proud Democrat and expects about 90 percent of the votes she casts to go to Democrats.

The reaction inside her own party was immediate. Schumer, who had said in June that Stevens had the best chance of beating Rogers, called her endorsement of the Republican a despicable betrayal. The Associated Press reported that her longtime chief of staff resigned over the move. Rogers said he was proud to earn her vote and added, candidly, that he was glad he was not running against her. El-Sayed, asked about it, said he was less interested in the campaign back and forth than in the cost of living and the issues in front of voters.

Trump took the story up within hours at his rally in Dubuque, Iowa. He called the endorsement a big move and brave, said nobody had expected it, and said he had called Stevens to thank her. He told the crowd he would love for her to switch parties. Trump had endorsed Rogers, who lost Michigan's 2024 Senate race by less than half a point and is running for the seat Peters is leaving.

What it does to the race is a numbers question, and the numbers are close. The RealClearPolitics average of polls taken from September 28 to October 29 put El-Sayed ahead 49.1 to 45.6, as of October 29. Michigan is one of the few states where Democrats are defending a seat they cannot afford to lose if they want the Senate, and Republicans hold the chamber 53 to 47. A sitting Democratic congresswoman telling her own voters to back the Republican, 48 hours before polls open, is the kind of late break campaigns cannot buy and cannot answer in time. Tuesday will show how many of her primary voters followed her.