# Michigan Senate winner? (Person)

In 2026

Updated: May 8, 2026

Category: Elections

Tags: US Elections

HTML: /markets/elections/us-elections/michigan-senate-winner-person/

## Short Answer

**Key takeaway.** Both the **model** and the **market** expect Abdul El-Sayed to win the Michigan Senate seat in 2026, with no compelling evidence of mispricing.

## Key Claims (January 2026)

**- - Michigan recently demonstrated strong Democratic performance in key state-level elections.** - Mike Rogers holds clear frontrunner status and significant financial backing in Republican primary.
- The Democratic primary remains highly volatile, with **36%** of voters undecided.
- Mallory McMorrow leads Q1 2026 fundraising and secured a top Democratic endorsement.
- Abdul El-Sayed is tied in primary polling but lags in Q1 2026 fundraising.

### Why This Matters (GEO)

- AI agents extract claims, not arguments.
- Improves citation probability in summaries and answer cards.
- Enables fact stitching across multiple sources.

## Executive Verdict

**Key takeaway.** **Model** estimates **35.1%** **probability** versus 45c **market** price, suggesting overvaluation due to the highly competitive Democratic primary.

### Who Wins and Why

| Outcome | Market | Model | Why |
| --- | --- | --- | --- |
| Haley Stevens | 13.0% | 10.0% | Research does not highlight strong supporting evidence. |
| Abdul El-Sayed | 45.0% | 35.1% | Research does not highlight strong supporting evidence. |
| Mike Rogers | 26.0% | 26.5% | Mike Rogers is the clear Republican primary frontrunner with significant financial backing. |

## Model vs Market

| Outcome | Market Probability | Octagon Model Probability |
| --- | --- | --- |
| Haley Stevens | 13.0% | 10.0% |
| Abdul El-Sayed | 45.0% | 35.1% |
| Mike Rogers | 26.0% | 26.5% |
| Mallory McMorrow | 23.0% | 28.4% |

- Expiration: November 3, 2027

## Market Behavior & Price Dynamics

This market has experienced an overall upward trend, starting at a 38.0% probability and currently trading at 45.0%. The price action has been highly volatile, as evidenced by a wide trading range that has seen the price reach as high as 99.0%. A significant early movement occurred when the price climbed from 38.0% to 45.0% in the first few days of trading. The substantial difference between the market's peak price and its current level indicates that early, high levels of confidence have since been significantly revised downwards.

The upward price movement likely reflects the candidate's perceived strength within a competitive Democratic primary. News from an Emerson College/WOOD-TV poll, which found Abdul El-Sayed tied for first place, may have contributed to positive market sentiment. The market's initial floor appears to be set at the 38.0% starting price, which can be seen as an early support level. The total trading volume of 2,398 contracts suggests moderate but consistent interest from traders. Overall, the chart suggests that while sentiment for this candidate is positive relative to the market's opening, it has cooled considerably from its peak, signaling that traders now see a more uncertain and competitive race.

## Contract Snapshot

This market resolves to "Yes" if Abdul El-Sayed wins the 2026 Michigan Senate race as the nominee of the listed party. If he fails to secure the nomination, the market resolves to "No" immediately.

The market opened on May 5, 2026, and will close after the outcome occurs or by November 3, 2027, with payouts projected 30 minutes after closing. Outcome verification is from the Michigan Secretary of State, and accelerated determination is possible after a consensus of media organizations projects the winner.

## Market Discussion

The market currently predicts Abdul El-Sayed as the most likely winner at 45%, followed by Mike Rogers at 26% and Mallory McMorrow at 23%. One trader specifically argues that Haley Stevens, currently at 13%, is "criminally underpriced" relative to Mallory McMorrow. This suggests a viewpoint that Stevens' probability should be higher, implying a 'Yes' argument for Stevens over McMorrow.

## Market Data

| Contract | Yes Bid | Yes Ask | Last Price | Volume | Open Interest |
| --- | --- | --- | --- | --- | --- |
| Abdul El-Sayed | 42% | 45% | 45% | $2,398.23 | $2,197.23 |
| Haley Stevens | 12% | 13% | 13% | $2,755.11 | $1,987.04 |
| Mallory McMorrow | 23% | 24% | 23% | $1,343.93 | $1,336.93 |
| Mike Rogers | 25% | 26% | 26% | $1,837.92 | $1,039.68 |

## How do the fundraising totals and cash-on-hand of Abdul El-Sayed, Mallory McMorrow, and Haley Stevens compare heading into the August 2026 Democratic primary?

Mallory McMorrow Q1 Net Fundraising | $2.96 million (Q1 2026) [[^]](https://www.lansingcitypulse.com/stories/michigan-us-senate-primary-tightens-as-mcmorrow-el-sayed-outpace-stevens-in-q1-fundraising,189165)[[^]](https://eu.detroitnews.com/story/news/politics/2026/04/15/mallory-mcmorrow-fundraising-lead-michigan-u-s-senate-race-mike-rogers-cash-stevens-el-sayed/89630523007/)[[^]](https://www.newsfromthestates.com/article/michigan-us-senate-primary-tightens-mcmorrow-el-sayed-outpace-stevens-q1-fundraising) |
Mallory McMorrow Q1 Cash on Hand | $3.69 million (Q1 2026) [[^]](https://www.lansingcitypulse.com/stories/michigan-us-senate-primary-tightens-as-mcmorrow-el-sayed-outpace-stevens-in-q1-fundraising,189165)[[^]](https://eu.detroitnews.com/story/news/politics/2026/04/15/mallory-mcmorrow-fundraising-lead-michigan-u-s-senate-race-mike-rogers-cash-stevens-el-sayed/89630523007/)[[^]](https://www.newsfromthestates.com/article/michigan-us-senate-primary-tightens-mcmorrow-el-sayed-outpace-stevens-q1-fundraising) |
Abdul El-Sayed Q1 Net Fundraising | $2.27 million (Q1 2026) [[^]](https://www.lansingcitypulse.com/stories/michigan-us-senate-primary-tightens-as-mcmorrow-el-sayed-outpace-stevens-in-q1-fundraising,189165)[[^]](https://eu.detroitnews.com/story/news/politics/2026/04/15/mallory-mcmorrow-fundraising-lead-michigan-u-s-senate-race-mike-rogers-cash-stevens-el-sayed/89630523007/)[[^]](https://www.newsfromthestates.com/article/michigan-us-senate-primary-tightens-mcmorrow-el-sayed-outpace-stevens-q1-fundraising) |

**Mallory McMorrow led in Q1 2026 net fundraising among candidates**

Mallory McMorrow led in Q1 2026 net fundraising among candidates. For the first quarter of 2026, encompassing January 1 to March 31, Mallory McMorrow reported the highest net fundraising among the Democratic primary candidates, reaching **$2.96** million [[^]](https://www.lansingcitypulse.com/stories/michigan-us-senate-primary-tightens-as-mcmorrow-el-sayed-outpace-stevens-in-q1-fundraising,189165)[[^]](https://eu.detroitnews.com/story/news/politics/2026/04/15/mallory-mcmorrow-fundraising-lead-michigan-u-s-senate-race-mike-rogers-cash-stevens-el-sayed/89630523007/)[[^]](https://www.newsfromthestates.com/article/michigan-us-senate-primary-tightens-mcmorrow-el-sayed-outpace-stevens-q1-fundraising). Abdul El-Sayed's net fundraising during this period totaled **$2.27** million, while Haley Stevens raised **$1.86** million [[^]](https://www.lansingcitypulse.com/stories/michigan-us-senate-primary-tightens-as-mcmorrow-el-sayed-outpace-stevens-in-q1-fundraising,189165)[[^]](https://eu.detroitnews.com/story/news/politics/2026/04/15/mallory-mcmorrow-fundraising-lead-michigan-u-s-senate-race-mike-rogers-cash-stevens-el-sayed/89630523007/)[[^]](https://www.newsfromthestates.com/article/michigan-us-senate-primary-tightens-mcmorrow-el-sayed-outpace-stevens-q1-fundraising).

Mallory McMorrow led cash-on-hand totals at the close of Q1 2026. At the close of Q1 2026, McMorrow possessed the most cash on hand with **$3.69** million [[^]](https://www.lansingcitypulse.com/stories/michigan-us-senate-primary-tightens-as-mcmorrow-el-sayed-outpace-stevens-in-q1-fundraising,189165)[[^]](https://eu.detroitnews.com/story/news/politics/2026/04/15/mallory-mcmorrow-fundraising-lead-michigan-u-s-senate-race-mike-rogers-cash-stevens-el-sayed/89630523007/)[[^]](https://www.newsfromthestates.com/article/michigan-us-senate-primary-tightens-mcmorrow-el-sayed-outpace-stevens-q1-fundraising). Haley Stevens followed with **$3.38** million in cash on hand, and Abdul El-Sayed had **$2.52** million [[^]](https://www.lansingcitypulse.com/stories/michigan-us-senate-primary-tightens-as-mcmorrow-el-sayed-outpace-stevens-in-q1-fundraising,189165)[[^]](https://eu.detroitnews.com/story/news/politics/2026/04/15/mallory-mcmorrow-fundraising-lead-michigan-u-s-senate-race-mike-rogers-cash-stevens-el-sayed/89630523007/)[[^]](https://www.newsfromthestates.com/article/michigan-us-senate-primary-tightens-mcmorrow-el-sayed-outpace-stevens-q1-fundraising). The Michigan Democratic Senate primary, involving these three contenders, is anticipated to conclude around August 4, 2026 [[^]](https://polymarket.com/event/michigan-democratic-senate-primary-winner)[[^]](https://www.polymarketflow.com/**market**/michigan-democratic-senate-primary-winner)[[^]](https://ballotpedia.org/United_States_Senate_election_in_Michigan,_2026_(August_4_Democratic_primary)).

## What polling developments in the Republican primary could challenge Mike Rogers's status as the presumptive nominee before August 2026?

Challenger polling | low single digits (Bernadette Smith, Frederick Heurtebise) [[^]](https://en.wikipedia.org/wiki/2026_United_States_Senate_election_in_Michigan)[[^]](https://kalshi.com/markets/kxsenatemir/mir/kxsenatemir-26) |
Outside funding for Rogers | $45 million pledged by Senate Leadership Fund [[^]](https://www.michiganpublic.org/politics-government/2026-04-06/mike-rogers-campaign-gets-45m-boost-in-outside-spending) |
Rogers's past election outcome | narrow loss in the 2024 Michigan Senate race [[^]](https://en.wikipedia.org/wiki/Mike_Rogers_(Michigan_politician))[[^]](https://www.racetothewh.com/senate/michigan26) |

**Mike Rogers is currently the presumptive Republican nominee for Senate in Michigan**

Mike Rogers is currently the presumptive Republican nominee for Senate in Michigan. He enjoys frontrunner status in polling and has secured significant financial support, including a **$45** million pledge from the Senate Leadership Fund [[^]](https://www.michiganpublic.org/politics-government/2026-04-06/mike-rogers-campaign-gets-45m-boost-in-outside-spending)[[^]](https://www.youtube.com/watch?v=rUVi64SlMZY)[[^]](https://kalshi.com/markets/kxsenatemir/mir/kxsenatemir-26)[[^]](https://www.racetothewh.com/senate/michigan26). While lesser-known declared candidates like Bernadette Smith and Frederick Heurtebise currently poll in low single digits, an unforeseen event or a particularly effective campaign could theoretically elevate one of these contenders [[^]](https://en.wikipedia.org/wiki/2026_United_States_Senate_election_in_Michigan)[[^]](https://kalshi.com/markets/kxsenatemir/mir/kxsenatemir-26).

Challengers could exploit Rogers's past vulnerabilities and evolving political stances. His narrow loss in the 2024 Michigan Senate race presents a past electoral weakness [[^]](https://en.wikipedia.org/wiki/Mike_Rogers_(Michigan_politician))[[^]](https://www.racetothewh.com/senate/michigan26). Rogers has also faced scrutiny for shifting positions on election integrity, initially conceding the 2020 election but later advancing what have been described as "baseless election conspiracy theories" when seeking endorsements [[^]](https://en.wikipedia.org/wiki/Mike_Rogers_(Michigan_politician)). Furthermore, the substantial financial commitment from outside groups, while bolstering his campaign, could be framed by opponents as evidence of being propped up by "special interest backers" rather than genuine grassroots support [[^]](https://www.michiganpublic.org/politics-government/2026-04-06/mike-rogers-campaign-gets-45m-boost-in-outside-spending).

Shifts in Republican voter sentiment could also fragment Rogers's base. Although former President Donald Trump maintains high favorability among GOP primary voters, nearly half indicate that his endorsement would not sway their vote [[^]](https://www.sbam.org/james-up-18-points-in-primary-stevens-does-better-in-detroit-chamber-poll/). This dynamic creates an opening for a challenger to appeal to "classic" Republicans or younger voters, potentially eroding Rogers's support even without a direct challenge from a major new contender [[^]](https://www.sbam.org/james-up-18-points-in-primary-stevens-does-better-in-detroit-chamber-poll/).

## Which major endorsements before the August 4, 2026 primary could significantly shift polling momentum between Abdul El-Sayed and Mallory McMorrow?

McMorrow Highest-Ranking Endorsement Date | February 2, 2026 (Winnie Brinks) [[^]](https://michiganadvance.com/briefs/michigan-senate-majority-leader-winnie-brinks-endorses-mallory-mcmorrow-in-u-s-senate-bid/)[[^]](https://www.lansingcitypulse.com/stories/michigan-senate-majority-leader-winnie-brinks-endorses-mallory-mcmorrow-in-us-senate-bid,178156) |
El-Sayed Union Endorsement Date | April 28, 2026 (National Nurses United) [[^]](https://abdulforsenate.com/2026/04/national-nurses-united-endorses-dr-abdul-el-sayed-for-michigans-open-u-s-senate-seat/) |
Primary Poll Tie | 24% for El-Sayed, 24% for McMorrow (Emerson College/WOOD-TV, April 2026) [[^]](https://emersoncollegepolling.com/michigan-2026-poll-abdul-el-sayed-mallory-mcmorrow-tied-for-lead-in-democratic-senate-primary/)[[^]](https://www.lansingstatejournal.com/story/news/politics/elections/2026/04/16/mcmorrow-el-sayed-stevens-poll-us-senate-election-michigan/89644944007/) |

**Major endorsements could significantly shift polling momentum in a tight primary**

Major endorsements could significantly shift polling momentum in a tight primary. The race between Abdul El-Sayed and Mallory McMorrow ahead of the August 4, 2026 primary is exceptionally close, with an Emerson College/WOOD-TV poll conducted from April 11–13, 2026, showing both candidates tied at **24%**. A substantial **36%** of voters remain undecided, indicating that endorsements have a strong potential to sway a large segment of the electorate [[^]](https://emersoncollegepolling.com/michigan-2026-poll-abdul-el-sayed-mallory-mcmorrow-tied-for-lead-in-democratic-senate-primary/)[[^]](https://www.lansingstatejournal.com/story/news/politics/elections/2026/04/16/mcmorrow-el-sayed-stevens-poll-us-senate-election-michigan/89644944007/).

Abdul El-Sayed secured endorsements from prominent progressive figures and groups. U.S. Sen. Bernie Sanders endorsed El-Sayed following his Senate campaign launch [[^]](https://detroitnews.com/story/news/politics/2025/04/17/democrat-abdul-el-sayed-launches-campaign-for-us-senate-michigan-mallory-mcmorrow-haley-stevens/83129803007). National Nurses United provided their backing on April 28, 2026, which could mobilize healthcare workers and influence undecided primary voters [[^]](https://abdulforsenate.com/2026/04/national-nurses-united-endorses-dr-abdul-el-sayed-for-michigans-open-u-s-senate-seat/). Additionally, Eastern Upper Peninsula Solidarity/Indivisible endorsed El-Sayed on March 27, 2026, aiming to bolster progressive grassroots efforts for voter persuasion and turnout in the Democratic primary [[^]](https://abdulforsenate.com/2026/03/eastern-upper-peninsula-indivisible-chapter-endorses-abdul-el-sayed/).

Mallory McMorrow attracted support from high-ranking state and national officials. State Senate Majority Leader Winnie Brinks endorsed McMorrow on February 2, 2026, notable as the highest-ranking Democratic official in Michigan to endorse in the primary, potentially enhancing McMorrow's credibility and broad appeal [[^]](https://michiganadvance.com/briefs/michigan-senate-majority-leader-winnie-brinks-endorses-mallory-mcmorrow-in-u-s-senate-bid/)[[^]](https://www.lansingcitypulse.com/stories/michigan-senate-majority-leader-winnie-brinks-endorses-mallory-mcmorrow-in-us-senate-bid,178156). Other endorsements for McMorrow include U.S. Sen. Peter Welch on June 18, 2025, providing national validation, and Trenton Bowens, Michigan Black Summit chair, who can strengthen local coalition messaging [[^]](https://www.mcmorrowformichigan.com/endorsements-1). While these endorsements are plausible momentum shifters in a statistically tied polling environment, no single endorsement is identified as definitively deciding the primary [[^]](https://emersoncollegepolling.com/michigan-2026-poll-abdul-el-sayed-mallory-mcmorrow-tied-for-lead-in-democratic-senate-primary/)[[^]](https://detroitnews.com/story/news/politics/2025/04/17/democrat-abdul-el-sayed-launches-campaign-for-us-senate-michigan-mallory-mcmorrow-haley-stevens/83129803007)[[^]](https://abdulforsenate.com/2026/04/national-nurses-united-endorses-dr-abdul-el-sayed-for-michigans-open-u-s-senate-seat/)[[^]](https://michiganadvance.com/briefs/michigan-senate-majority-leader-winnie-brinks-endorses-mallory-mcmorrow-in-u-s-senate-bid/)[[^]](https://www.mcmorrowformichigan.com/endorsements-1).

## What is the expected release schedule for major polls, such as from Emerson College, covering the Michigan Senate race through November 2026?

First Emerson Poll Release | January 29, 2026 [[^]](https://emersoncollegepolling.com/michigan-2026-poll-crowded-democratic-senate-primary-remains-wide-open/)[[^]](https://emersoncollegepolling.com/michigan-2026-poll-abdul-el-sayed-mallory-mcmorrow-tied-for-lead-in-democratic-senate-primary/)[[^]](https://emersoncollegepolling.com/category/state-poll/michigan/) |
Second Emerson Poll Release | April 16, 2026 [[^]](https://emersoncollegepolling.com/michigan-2026-poll-crowded-democratic-senate-primary-remains-wide-open/)[[^]](https://emersoncollegepolling.com/michigan-2026-poll-abdul-el-sayed-mallory-mcmorrow-tied-for-lead-in-democratic-senate-primary/)[[^]](https://emersoncollegepolling.com/category/state-poll/michigan/) |
Michigan General Election Date | November 3, 2026 [[^]](http://www.ballotpedia.org/Michigan_elections,_2026)[[^]](https://ballotpedia.org/Michigan_election_calendar)[[^]](https://www.michigan.gov/sos/-/media/Project/Websites/sos/Election-Administrators/May-Election-Dates.pdf?rev=e8c28ecdb908461984641439a6102b65&hash=911E9EFED67BAC6578C9D7138DFBFFB3) |

**Emerson College released two Michigan Senate polls in early 2026**

Emerson College released two Michigan Senate polls in early 2026. The first poll was released on January 29, 2026, with data collected from January 24–25 [[^]](https://emersoncollegepolling.com/michigan-2026-poll-crowded-democratic-senate-primary-remains-wide-open/)[[^]](https://emersoncollegepolling.com/michigan-2026-poll-abdul-el-sayed-mallory-mcmorrow-tied-for-lead-in-democratic-senate-primary/)[[^]](https://emersoncollegepolling.com/category/state-poll/michigan/). A subsequent poll followed, released on April 16, 2026, which gathered data between April 11–13 [[^]](https://emersoncollegepolling.com/michigan-2026-poll-crowded-democratic-senate-primary-remains-wide-open/)[[^]](https://emersoncollegepolling.com/michigan-2026-poll-abdul-el-sayed-mallory-mcmorrow-tied-for-lead-in-democratic-senate-primary/)[[^]](https://emersoncollegepolling.com/category/state-poll/michigan/).

Major polls are expected closer to Michigan's 2026 election dates. The U.S. Senate race in Michigan includes a primary election on August 4, 2026, and the general election on November 3, 2026 [[^]](http://www.ballotpedia.org/Michigan_elections,_2026)[[^]](https://ballotpedia.org/Michigan_election_calendar)[[^]](https://www.michigan.gov/sos/-/media/Project/Websites/sos/Election-Administrators/May-Election-Dates.pdf?rev=e8c28ecdb908461984641439a6102b65&hash=911E9EFED67BAC6578C9D7138DFBFFB3). While Emerson College's 2026 poll releases indicate periodic timing rather than a fixed schedule [[^]](https://emersoncollegepolling.com/michigan-2026-poll-crowded-democratic-senate-primary-remains-wide-open/)[[^]](https://emersoncollegepolling.com/michigan-2026-poll-abdul-el-sayed-mallory-mcmorrow-tied-for-lead-in-democratic-senate-primary/)[[^]](http://www.ballotpedia.org/Michigan_elections,_2026), polling efforts from various organizations are generally anticipated to increase closer to these key election dates [[^]](https://emersoncollegepolling.com/michigan-2026-poll-crowded-democratic-senate-primary-remains-wide-open/)[[^]](https://emersoncollegepolling.com/michigan-2026-poll-abdul-el-sayed-mallory-mcmorrow-tied-for-lead-in-democratic-senate-primary/)[[^]](http://www.ballotpedia.org/Michigan_elections,_2026).

## What historical voting patterns and demographic trends in Michigan support the market's high probability of a Democratic victory in the November 2026 general election?

Gubernatorial Re-election Margin | nearly 11 percentage points (2022) [[^]](https://en.wikipedia.org/wiki/2022_Michigan_gubernatorial_election) |
MI State Senate Control | 20-18 Democratic majority (2022) [[^]](https://ballotpedia.org/Michigan_State_Senate_elections) |
Average Voter Participation | 63.3% (2014-2022) [[^]](https://www.wzzm13.com/article/news/politics/michigan-politics/study-michigan-among-highest-voter-turnout-last-10-years/69-6c0f9c87-94d6-44c2-b830-b11410dad815) |

**Michigan has recently shown strong Democratic performance in key state-level elections**

Michigan has recently shown strong Democratic performance in key state-level elections. In recent electoral cycles, the state has demonstrated a strong inclination towards Democratic candidates, even when voters supported a Republican presidential candidate [[^]](https://en.wikipedia.org/wiki/2022_Michigan_gubernatorial_election)[[^]](https://en.wikipedia.org/wiki/2024_United_States_Senate_election_in_Michigan)[[^]](https://en.wikipedia.org/wiki/2024_United_States_presidential_election_in_Michigan). For example, in 2022, Democratic Governor Gretchen Whitmer was re-elected by almost 11 percentage points, improving upon her 2018 victory margin [[^]](https://en.wikipedia.org/wiki/2022_Michigan_gubernatorial_election)[[^]](https://ballotpedia.org/Governor_of_Michigan). That same year, Democrats secured control of the Michigan State Senate for the first time since 1984, establishing a 20-18 majority [[^]](https://ballotpedia.org/Michigan_State_Senate_elections). More recently, Democrat Elissa Slotkin won her U.S. Senate seat in 2024, a significant win considering it occurred simultaneously with the Republican presidential nominee carrying Michigan, indicating a propensity for ticket splitting among voters [[^]](https://en.wikipedia.org/wiki/2024_United_States_Senate_election_in_Michigan)[[^]](https://en.wikipedia.org/wiki/2024_United_States_presidential_election_in_Michigan).

Key demographic shifts and high voter engagement bolster Democratic prospects in Michigan. The state's demographic evolution, particularly urbanization and metropolitan expansion in counties such as Oakland, Macomb, and Washtenaw, generally correlates with increased Democratic support, with higher voter turnout in these areas proving decisive in 2020 [[^]](https://mural.maynoothuniversity.ie/id/eprint/16783/1/Durkan%**282022%**29Michigan.pdf). Data from 2020 also reveals that Democratic Governor Whitmer's approval ratings were considerably higher than former President Trump's in Michigan's most educated counties, reflecting an increasing Democratic alignment among white college graduates [[^]](https://ippsr.msu.edu/public-policy/michigan-wonk-blog/michigan-political-views-fall-along-demographic-and-partisan-lines)[[^]](https://www.brookings.edu/wp-content/uploads/2016/06/10_midwest_frey_teixeira.pdf). Furthermore, Michigan's most populous and racially diverse counties consistently exhibit strong support for Democratic candidates [[^]](https://ippsr.msu.edu/public-policy/michigan-wonk-blog/michigan-political-views-fall-along-demographic-and-partisan-lines). The state's high average eligible voter participation of **63.3%** from 2014 to 2022, which ranks fourth nationally, also contributes to energizing the Democratic base [[^]](https://www.wzzm13.com/article/news/politics/michigan-politics/study-michigan-among-highest-voter-turnout-last-10-years/69-6c0f9c87-94d6-44c2-b830-b11410dad815).

## What Could Change the Odds

**Democrats extended their majority in the Michigan State Senate after Democrat Chedwick Greene was declared winner, defeating Republican Jason Tunney and Libertarian Ali Sledz in the 35th District special election, declared on 2026-05-05/05-06 [[^]](https://spectrumlocalnews.com/mi/michigan/news/2026/05/06/greene-wins-35th-senate-district)[[^]](https://spectrumlocalnews.com/mi/michigan/news/2026/05/06/michigan-democrats-keep-control-of-state-senate-in-election-win-that-offers-clues-about-midterms).** Greene will serve the remainder of the term through January 2027 [[^]](https://spectrumlocalnews.com/mi/michigan/news/2026/05/06/greene-wins-35th-senate-district).

**For the 2026 Michigan U.S.** Senate election, prediction-**market** trackers show Democrats favored to win the open seat [[^]](https://polymarket.com/event/michigan-senate-election-winner)[[^]](https://www.predictionhunt.com/odds/michigan-senate-winner/8891). One tracker indicates an **82%** implied **probability** for "Democrat," while another shows "Democrat" at approximately **79.3%** implied **probability** [[^]](https://polymarket.com/event/michigan-senate-election-winner)[[^]](https://www.predictionhunt.com/odds/michigan-senate-winner/8891).

**The timeline for the 2026 Michigan U.S.** Senate election includes a filing deadline on April 21, 2026, a primary on August 4, 2026, and the general election on November 3, 2026 [[^]](https://ballotpedia.org/United_States_Senate_election_in_Michigan,_2026)[[^]](http://www.ballotpedia.org/United_States_Senate_election_in_Michigan,_2026_(August_4_Democratic_primary))[[^]](https://en.wikipedia.org/wiki/2026_United_States_Senate_election_in_Michigan).

## Key Dates & Catalysts

- **Expiration:** November 03, 2027
- **Closes:** November 03, 2027

## Decision-Flipping Events

- Democrats extended their majority in the Michigan State Senate after Democrat Chedwick Greene was declared winner, defeating Republican Jason Tunney and Libertarian Ali Sledz in the 35th District special election, declared on 2026-05-05/05-06 [^] [^] .
- Greene will serve the remainder of the term through January 2027 [^] .
- For the 2026 Michigan U.S.
- Senate election, prediction-**market** trackers show Democrats favored to win the open seat [^] [^] .

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## Historical Resolutions

No historical resolution data available for this series.

## Disclaimer

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### Data Sources & Model Transparency

**Data Sources:** Octagon Deep Research aggregates information from multiple sources including news, filings, and market data.

**Freshness:** Analysis is generated periodically and may not reflect the latest developments. Verify critical information from primary sources.

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