Detroit (AP) — Abdul El-Sayed has won Michigan’s Democratic nomination for U.S. Senate, narrowly defeating U.S. Rep. Haley Stevens in a victory for the party’s progressive wing in a battleground state.

The real test of El-Sayed’s and progressives’ strength will now come in a November matchup against Mike Rogers, a former congressman who ran unopposed for the Republican nomination. The seat is pivotal to Democrats’ chances of flipping the Senate and El-Sayed will face the challenge of uniting a divided Democratic base after a bruising primary.

The race remained tight throughout Tuesday night, with a winner not declared until Wednesday morning. In his final remarks at a primary night party before the race was called, El-Sayed said “tomorrow we begin to mend fences.”

Stevens called El-Sayed to concede Wednesday, and she issued a statement saying she would back El-Sayed’s candidacy.

“I am proud to offer my support as he takes on Mike Rogers in the general election,” she said.

Stevens added, “This was a thorough and rigorous campaign that brought out the full span of views within the Democratic Party — and that is why we have primaries.”

Progressives have been gaining strength this year
El-Sayed’s win represents a significant shift for the Democratic Party; in 2018 he lost the gubernatorial primary to now-Gov. Gretchen Whitmer by 21 percentage points.

El-Sayed, a former health official, campaigned on “Medicare for All,” halting military aid to Israel and campaign finance reform. He had support from progressive leaders including Sen. Bernie Sanders and U.S. Rep. Alexandria Ocasio-Cortez, who framed the race as a grassroots-focused movement and a broader fight against the establishment and big-money spending.

Sen. Chris Van Hollen, another progressive leader who endorsed El-Sayed, said the race “should be a wake-up call to the Washington Democratic establishment.”

“He was running against a lot of Washington insiders as well as parts of the Michigan Democratic establishment. And he won,” said Van Hollen. “That’s an incredible story.”

“Congratulations to him,” said Sen. Gary Peters, the Michigan Democrat whose retirement spurred the contentious primary to replace him. Peters had endorsed Stevens.

Now comes the more difficult challenge for Democrats: uniting the party to defeat Rogers, for whom Republicans have already reserved large sums of money ahead of the general election. Democrats consider the seat a must-win if they are to flip control of the Senate this year.

El-Sayed called for unity to defeat Rogers
Early Tuesday evening, El-Sayed’s supporters in Detroit’s Majestic Theatre cheered at the first batches of votes, before mellowing. Hours later Stevens’ previously subdued partygoers roared as she narrowed the margin.

“Whatever happens tonight,” El-Sayed told a thinned but still energetic crowd, “we have a responsibility to ensure that we unite, unite to make sure that Mike Rogers never sees the inside of the U.S. Senate.”

El-Sayed, a former Wayne County health director, campaigned on “Medicare for All,” campaign finance reform and ending military aid to Israel.

Stevens, a four-term congresswoman, focused on manufacturing and the economy. She stressed her past victories in tough races, saying she would be best positioned to beat Rogers.

Stevens benefited from tens of millions of dollars in outside spending, including the largest investment in a race ever from the American Israel Public Affairs Committee, which supports pro-Israel candidates.

Michigan is a must-win Senate race for Democrats
The race will help decide which party controls the chamber in the last two years of President Donald Trump’s term. Those stakes have added heat to the rivalry, with moderates arguing that El-Sayed would have a harder time than Stevens against a Republican in the general election.

Stevens won election to Congress in 2018 after serving as chief of staff to President Barack Obama’s auto task force, which helped oversee the federal rescue of General Motors and Chrysler. Her campaign and allied groups have repeatedly highlighted that experience.

El-Sayed cast himself as the anti-establishment candidate and argued that Democrats need to reject corporate influence and embrace a more progressive agenda.

While the candidate has said he is not a democratic socialist, he found support from some of the group’s members. That included Melat Kiros, who recently beat a longtime incumbent in a Democratic primary for a Denver-based House seat and was at El-Sayed’s watch party. Also there was Hasan Piker, a progressive and controversial influencer online.

The candidates’ differences were clear to some voters.

Kenneth Woodside, 87, of West Bloomfield, said he voted for El-Sayed over Stevens because “the nation is ready for someone who wants to take some more action rather than on the road we are now, which is on the road to an oligarchy and authoritarianism.”

Nessa Fuller, 51, of Birmingham, said she voted for Stevens because she will “fight to get the right things done, and she’ll work with other people, which is really important to me.”

Outside influences spent millions on the Senate race
National groups poured unprecedented sums into the race, making it one of the country’s biggest tests of outside spending.

Groups backing Stevens spent more than $50 million, led by more than $30 million from AIPAC and its affiliates.

The spending thrust Israel policy into the center of the race even though the ads never mentioned it. While El-Sayed called for ending military aid to Israel, Stevens maintained strong support for the relationship.

Israel became a contentious issue within the Democratic Party amid a war in Gaza that killed more than 73,000 Palestinians in its retaliatory offensive after about 1,200 people were killed and 251 hostages were taken in attacks by the militant group Hamas.

McKinney wins Detroit US House primary
In a heavily Democratic district representing Detroit, the 13th, state Rep. Donavan McKinney defeated Rep. Shri Thanedar. McKinney argued that the city should once again have a Black representative in Congress.

After Thanedar won election in 2022, Detroit had no Black representation in Congress for the first time since the early 1950s.