Key Takeaways:
Michigan's Democratic Senate primary on Tuesday pits a progressive insurgent against a $61 million establishment machine in the party's most consequential contest of the cycle.
Abdul El-Sayed, a progressive former public-health official endorsed by Sen. Bernie Sanders and Rep. Alexandria Ocasio-Cortez, leads four-term Rep. Haley Stevens 54% to 39% in an Emerson College poll, despite Stevens and her allies outspending him $61 million to $6.5 million through Saturday, according to ad-tracking firm AdImpact.
"It's a huge risk to nominate a far-left candidate in a swing state in such an important year," said Cheri Bustos, a former Democratic congresswoman from Illinois who repeatedly won a Trump-leaning district. "The Democratic Party has to learn the same lesson over and over again: These far-left socialist candidates are not electable in the swingiest districts and swingiest states."
The race has become the third-most-expensive Senate primary on record and the second-most-expensive of the 2025-2026 cycle, AdImpact data shows. A group tied to the pro-Israel American Israel Public Affairs Committee is the largest single spender at $30 million — AIPAC's biggest investment in any race ever, according to the Associated Press. El-Sayed's campaign has relied on grassroots donations and reports no corporate PAC contributions.
The outcome could determine Senate control in November. Democrats need a net gain of four seats to flip the chamber, and Michigan — which Trump won by 1.4 percentage points in 2024 — is rated a tossup by nonpartisan analysts. The seat is being vacated by retiring Sen. Gary Peters, and Republicans are poised to nominate former Rep. Mike Rogers, who narrowly lost the state's 2024 Senate race.
The Michigan primary has become the clearest test yet of whether the democratic socialist surge that has swept House primaries in New York and Colorado can translate to a statewide battleground. A CNN poll released Thursday found about a third of Democratic voters now identify as democratic socialists, and they are the most motivated to turn out.
El-Sayed, who does not identify as a DSA member but has the movement's organizers working for him, supports Medicare-for-all, free child care, and calls Israel's actions in Gaza "genocide." He has campaigned with Hasan Piker, a left-wing streamer who has been accused of antisemitism, drawing condemnation from Stevens and from Mallory McMorrow, a state senator who suspended her own Senate campaign in early July.
Stevens, backed by Senate Majority Leader Chuck Schumer, Michigan Gov. Gretchen Whitmer, and the Congressional Black Caucus, has positioned herself as a workhorse against a show horse. She supports a government-run health plan competing with private options, favors removing Social Security's payroll tax cap, and has described herself as a "proud pro-Israel Democrat."
The spending disparity has become a central campaign issue. El-Sayed's allies argue that a victory despite $60 million in outside spending would send a message to every Democratic politician that crossing special interests is survivable. "This is ground zero for the future of the Democratic Party," said Adam Green, co-founder of the Progressive Change Campaign Committee.
An El-Sayed victory would mark the first time a DSA-aligned candidate won a statewide Senate primary in a competitive swing state, and it would inject momentum into similar progressive contests in Wisconsin and Minnesota that follow one week later. It would also hand Republicans a ready-made attack line: Trump has already adopted a strategy of casting all Democrats as "communists."
But centrists warn the stakes cut both ways. "To have any chance at winning over the middle in a state Trump carried twice, he would need to denounce the Democratic Socialists of America and their radical agenda, ditch Piker, affirm Israel's right to exist and reverse his past commitment to defunding the police," said Jonathan Cowan, president of the centrist Democratic group Third Way. El-Sayed has distanced himself from prior calls to defund the police.
The last time a progressive outsider won a competitive Democratic Senate primary in a battleground state was 2018, when Alexandria Ocasio-Cortez's upset in New York's 14th district reshaped the party's internal politics. That race, however, was a House contest in a deep-blue district — not a statewide primary in a state Trump carried twice.
Polls have shown a clear generational divide. Voters under 50 break for El-Sayed by 42 points, 67% to 25%, while voters over 60 flip to Stevens by a 14-point margin, according to Emerson College. Black voters, who made up about one-fifth of the electorate in Michigan's 2020 presidential primary, have been aggressively courted by Stevens, who worked on Obama's auto-industry rescue task force.
Early in-person voting began July 25, and absentee ballots are running well above prior cycles. The winner faces Rogers in November, with the general election rated a tossup by Cook Political Report and other nonpartisan trackers.
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