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Which party will win the 2026 US Senate election in Michigan?

The 2026 United States Senate election in Michigan will be held on November 3, 2026. The main candidates are Abdul El-Sayed (Democrat) and Mike Rogers (Republican).

Forecasted on

Forecast probabilities

  • Democrat: 71.5%
  • Republican: 28.1%
  • Other: 0.4%

Reasoning

El-Sayed is favored, but not close to certain: the forecast is Democrat 71.5%, Republican 28.1%, Other 0.4%. A late Michigan poll and a favorable national climate point toward Democrats, while Rogers’s strength in the state, Republican spending, and striking Democratic defections leave him a meaningful chance.

Democrat — 71.5%: A late polling lead meets a favorable tide

The clearest state-level evidence is a CBS Detroit poll showing El-Sayed ahead 51% to 44%. That reverses the direction of the earlier Glengariff poll, which had Rogers up by about five points, though the earlier survey came before the campaign’s final stretch [e1565] [a9]. Nationally, Democrats lead on congressional preference in multiple polls, and one late survey found them ahead on issues including the economy, health care, and inflation [e1590] [e1609] [e1611]. A forecaster’s final ratings also shifted overwhelmingly toward Democrats [e1612].

That broader environment matters in a state where Rogers lost narrowly in 2024, even as Trump carried Michigan. The Democratic case is strengthened by signs of grassroots energy: after Haley Stevens endorsed Rogers, El-Sayed’s campaign reported a substantial fundraising surge, and Democratic leaders rallied behind him [a3] [a5] [e1588] [e1589]. Trump’s attacks on El-Sayed may energize Republicans, but they could also alienate voters; meanwhile, Rogers’s ads distancing himself from Trump’s tariff policy suggest the association carries risks for him [e1587] [e1575].

Republican — 28.1%: A close state, a real split, and room for polling error

Michigan remains competitive, and Rogers nearly won the seat in 2024. Republicans also had the advantage in reported ad spending, while Rogers built a substantial ground operation by knocking on more than a million doors [a3] [e1573] [e627]. His unopposed primary let him conserve resources as Democrats fought a bruising contest, and his campaign has tried to soften vulnerabilities on trade and abortion [a5] [e1580] [e1582].

The most consequential late development was Stevens’s endorsement of Rogers after losing the Democratic primary. A report also said incumbent Senator Elissa Slotkin endorsed him. These defections could give some moderate voters permission to cross party lines, especially in a close race [e1568] [e1586]. But the CBS poll preceded the endorsements, so it cannot tell us whether they changed voters’ minds. Nor should one poll settle the question: an analyst warned that polling errors resembling recent patterns could benefit Republicans [e1602].

Other — 0.4%: Possible, but remote

Third-party candidates could matter at the margins in a close contest, but the available evidence centers on El-Sayed and Rogers, and no alternative candidate appears competitive [e66]. A win by anyone else is therefore possible but highly unlikely.

Why the probabilities are close to three-to-one, not a foregone conclusion

The evidence points more strongly to El-Sayed: he leads in the latest direct poll, and the national climate favors Democrats. But the poll is only one measurement, came before the last-minute endorsements, and sits atop a state with a history of razor-thin results. Rogers’s spending and organization add further uncertainty; the Stevens endorsement, meanwhile, produced a fundraising response for El-Sayed rather than an obviously one-sided shift. Taken together, the signals justify a Democratic favorite at 71.5%, with 28.1% for Rogers and 0.4% for another outcome.

Update summary

A new CBS Detroit poll showed El-Sayed leading 51% to 44%, broadly consistent with the late polling trend [e1565]. But Haley Stevens and Senator Elissa Slotkin endorsed Rogers, introducing notable Democratic defections, while El-Sayed’s campaign reported a fundraising surge in response [e1568, e1586, e1589].

Cited evidence