1611 Forecasting

Michigan

Michigan

Governor

Open seat

Forecast as of October 7, 2026. These vote totals equal the sum of the counties below. Not a poll average.

DJocelyn Benson, D

Jocelyn Benson

Democratic

2,230,621 votesWin probability 92.8%

RJohn James, R

John James

Republican

1,937,331 votesWin probability 7.2%

Other

82,633 votes

Margin

D+6.9

Win probability

92.8%

80% interval

D+13.0 to D+0.8

95% interval

D+16.2 to R+2.4

Market

93%

Jocelyn Benson · win probability, not a vote share

Raw data Checking polls.

50,000 draws. The 80% interval is the 10th to the 90th percentile. The 95% interval is the 2.5th to the 97.5th. The thin mark is the 95% interval. The thick mark is the 80%. The hairline is zero. 4,250,585 ballots, equal to the table.

Counties

Every reporting unit in the race. Sort any column. The votes above are this table added up.

Counties
Party
Wayne CountyDJocelyn Benson, DJocelyn BensonDD+37.467.7%658,094
Oakland CountyDJocelyn Benson, DJocelyn BensonDD+17.257.6%593,113
Macomb CountyRJohn James, RJohn JamesRR+4.551.3%391,129
Kent CountyDJocelyn Benson, DJocelyn BensonDD+10.254.1%285,610
Genesee CountyDJocelyn Benson, DJocelyn BensonDD+13.555.8%171,496
Washtenaw CountyDJocelyn Benson, DJocelyn BensonDD+49.974.0%170,037
Ottawa CountyRJohn James, RJohn JamesRR+16.157.1%137,074
Ingham CountyDJocelyn Benson, DJocelyn BensonDD+36.767.4%113,724
Kalamazoo CountyDJocelyn Benson, DJocelyn BensonDD+23.460.7%111,906
Livingston CountyRJohn James, RJohn JamesRR+17.257.6%101,730
Saginaw CountyDJocelyn Benson, DJocelyn BensonDD+4.551.3%79,783
St. Clair CountyRJohn James, RJohn JamesRR+24.461.2%74,159
Muskegon CountyDJocelyn Benson, DJocelyn BensonDD+6.152.1%73,115
Monroe CountyRJohn James, RJohn JamesRR+17.557.8%70,178
Berrien CountyRJohn James, RJohn JamesRR+2.550.3%64,908
Jackson CountyRJohn James, RJohn JamesRR+13.255.6%64,389
Allegan CountyRJohn James, RJohn JamesRR+20.059.0%55,236
Calhoun CountyRJohn James, RJohn JamesRR+6.252.1%52,624
Eaton CountyDJocelyn Benson, DJocelyn BensonDD+4.951.5%50,074
Grand Traverse CountyDJocelyn Benson, DJocelyn BensonDD+3.450.7%48,221
Bay CountyRJohn James, RJohn JamesRR+5.451.7%47,123
Lapeer CountyRJohn James, RJohn JamesRR+30.364.2%42,593
Lenawee CountyRJohn James, RJohn JamesRR+14.656.3%42,268
Midland CountyRJohn James, RJohn JamesRR+9.553.8%38,638
Clinton CountyRJohn James, RJohn JamesRR+0.949.5%38,387
Van Buren CountyRJohn James, RJohn JamesRR+7.452.7%31,627
Shiawassee CountyRJohn James, RJohn JamesRR+13.355.7%31,258
Marquette CountyDJocelyn Benson, DJocelyn BensonDD+15.957.0%29,960
Barry CountyRJohn James, RJohn JamesRR+25.761.9%29,674
Montcalm CountyRJohn James, RJohn JamesRR+29.163.6%26,765
Ionia CountyRJohn James, RJohn JamesRR+22.260.2%26,133
Isabella CountyDJocelyn Benson, DJocelyn BensonDD+1.149.6%23,678
Tuscola CountyRJohn James, RJohn JamesRR+33.065.5%23,601
St. Joseph CountyRJohn James, RJohn JamesRR+25.861.9%22,518
Newaygo CountyRJohn James, RJohn JamesRR+34.266.1%22,434
Cass CountyRJohn James, RJohn JamesRR+26.062.0%21,413
Hillsdale CountyRJohn James, RJohn JamesRR+42.470.2%19,065
Sanilac CountyRJohn James, RJohn JamesRR+38.568.3%17,932
Emmet CountyRJohn James, RJohn JamesRR+5.451.7%17,555
Mecosta CountyRJohn James, RJohn JamesRR+21.259.7%17,279
Delta CountyRJohn James, RJohn JamesRR+21.059.5%16,807
Houghton CountyRJohn James, RJohn JamesRR+8.653.3%11,903
Branch CountyRJohn James, RJohn JamesRR+32.665.3%11,747
Chippewa CountyRJohn James, RJohn JamesRR+14.756.4%11,287
Mason CountyRJohn James, RJohn JamesRR+13.355.7%11,099
Gratiot CountyRJohn James, RJohn JamesRR+20.659.3%11,056
Leelanau CountyDJocelyn Benson, DJocelyn BensonDD+12.755.4%10,867
Charlevoix CountyRJohn James, RJohn JamesRR+10.354.2%10,855
Wexford CountyRJohn James, RJohn JamesRR+26.162.1%10,849
Huron CountyRJohn James, RJohn JamesRR+31.364.7%10,567
Antrim CountyRJohn James, RJohn JamesRR+16.957.5%10,376
Clare CountyRJohn James, RJohn JamesRR+27.762.9%9,630
Alpena CountyRJohn James, RJohn JamesRR+18.758.4%9,587
Manistee CountyRJohn James, RJohn JamesRR+7.452.7%9,402
Cheboygan CountyRJohn James, RJohn JamesRR+22.560.3%9,148
Roscommon CountyRJohn James, RJohn JamesRR+23.760.9%8,949
Otsego CountyRJohn James, RJohn JamesRR+26.862.4%8,896
Iosco CountyRJohn James, RJohn JamesRR+21.159.6%8,763
Gladwin CountyRJohn James, RJohn JamesRR+30.164.1%8,628
Dickinson CountyRJohn James, RJohn JamesRR+27.562.8%8,529
Oceana CountyRJohn James, RJohn JamesRR+21.359.7%8,284
Benzie CountyRJohn James, RJohn JamesRR+1.849.9%7,896
Osceola CountyRJohn James, RJohn JamesRR+38.568.3%7,344
Menominee CountyRJohn James, RJohn JamesRR+23.660.8%7,275
Ogemaw CountyRJohn James, RJohn JamesRR+31.564.8%7,030
Kalkaska CountyRJohn James, RJohn JamesRR+33.565.8%6,422
Arenac CountyRJohn James, RJohn JamesRR+29.363.7%5,102
Missaukee CountyRJohn James, RJohn JamesRR+47.072.5%5,098
Gogebic CountyRJohn James, RJohn JamesRR+6.152.1%5,097
Presque Isle CountyRJohn James, RJohn JamesRR+20.059.0%4,868
Crawford CountyRJohn James, RJohn JamesRR+24.461.2%4,721
Mackinac CountyRJohn James, RJohn JamesRR+16.957.5%4,449
Alcona CountyRJohn James, RJohn JamesRR+31.864.9%4,167
Iron CountyRJohn James, RJohn JamesRR+19.658.9%3,915
Lake CountyRJohn James, RJohn JamesRR+22.360.2%3,852
Montmorency CountyRJohn James, RJohn JamesRR+36.067.1%3,560
Alger CountyRJohn James, RJohn JamesRR+10.254.1%3,232
Oscoda CountyRJohn James, RJohn JamesRR+35.166.6%2,892
Schoolcraft CountyRJohn James, RJohn JamesRR+22.260.1%2,728
Baraga CountyRJohn James, RJohn JamesRR+20.159.1%2,414
Ontonagon CountyRJohn James, RJohn JamesRR+20.759.4%2,140
Luce CountyRJohn James, RJohn JamesRR+35.866.9%1,663
Keweenaw CountyRJohn James, RJohn JamesRR+6.452.2%990

Model

  1. Raw data

    2024 presidential baseline

    National R−D 1.5

    County presidential file. Not the 2026 result.

  2. Raw data

    Generic ballot

    D 50.8 R 42.6 R−D -8.2

    National Wikipedia aggregate, October 5, 2026. State generic ballots, where a public poll exists, replace a uniform national swing: ME, MI, NH, NY, OH. A state with no generic-ballot poll keeps the national number and is not assigned a neighbor's.

  3. Raw data

    Party identification

    Pew D+5 and Gallup D+10, blend R−D -7.3

    Pew NPORS 2026, identifiers plus leaners: Republican 43, Democratic 48. Gallup party identification plus leaners, first two quarters of 2026: Democratic 49, Republican 39. Pew is 55% of this blend and Gallup is 45%.

  4. Model input

    National block

    R−D -7.8

    60% generic ballot and 40% party identification. The swing versus the 2024 presidential margin is what gets transmitted.

  5. Model input

    Swing transmitted

    0.40 × -9.3 = -3.7

    Only the share of the national swing this state took in the last midterm is transmitted. Elasticity is shrunk halfway toward 1.

  6. Raw data

    2026 early vote

    204,544 reported cast

    204,544 ballots reported cast as of 10/7/2026: 204,544 mail returned and 0 in person. Day-1 early vote is a signal, not a statewide margin. Mail is a count of returns, not the 2024 mail share. Applications and ballots that were only sent are not in this count. A day-1 pace gap is not a statewide margin.

  7. Model input

    History block

    R−D -5.4

    Weights 2018 5 / 2024 35 / 2020 20 / 2022 16. 2020 and 2022 results for this office are included in every state that had those races, including blowouts. A 2022 election is weighted ahead of 2018. If that office was not on the ballot, the 2020 result for the same office fills the year. Another office is not used. 2018 R+25.8 w5, 2022 open seat R+36.9 w16. No incumbent is on the ballot, so the 2022 result keeps 40 percent of its usual weight and 40 percent of its gap versus the 2024 presidential margin. The prior nominee's margin is not the open-seat baseline. This is the last result for the office, not the presidential margin. A 2024 county map is not copied forward unchanged. A 2018 model error is not used.

  8. Model input

    Electorate block

    R−D -9.3

    History reweighted by usual midterm turnout, plus half of the transmitted swing. Rural and presidential-only counties still move farther when the result is spread back to counties. Published ballots are the 2018 midterm canvass for this office, split by these modeled shares. They are not the 2024 presidential vote. The 2026 early-vote count is not inside this margin.

  9. Model input

    Turnout block

    R−D -8.1

    Each county is weighted by its 2018 ballots divided by its 2024 presidential ballots. Small counties shrink halfway toward the state median. 2020 mail shares are not used. 204,544 ballots reported cast as of 10/7/2026: 204,544 mail returned and 0 in person. Day-1 early vote is a signal, not a statewide margin. Mail is a count of returns, not the 2024 mail share.

  10. Model input

    National environment

    R−D -10.0

    History plus the full transmitted swing from the 60/40 national block.

  11. Model input

    State environment

    R−D -8.7

    History plus 45% of the transmitted swing.

  12. Model input

    State partisan lean

    R−D 1.4

    The 2024 presidential margin of this state, or of this district for a House race. It is heavier than the old state-environment block and is not shrunk toward the polling term.

  13. Model input

    Trump popularity

    R−D -8.8

    New York Times approval average, October 7, 2026: 37% approve, 60% disapprove. Net approval -23. That is not a vote share. Four-tenths of the net is a margin, then scaled by this place's partisan lean (factor 0.95), so an unpopular president costs more in a Democratic state.

  14. Model input

    Candidate favorability

    R−D 0.0

    Open seat or no incumbent. Favorability is zero.

  15. Model input

    Demographics

    R−D -10.7

    County college, rural, and nonwhite shares from the 2018 election-context file change how much of the swing a county takes. No separate microdata file.

  16. Model input

    Finance

    R−D -7.6

    No sourced spending edge, so the block starts on history. With a poll, it shrinks toward the polling term with the other non-poll blocks.

  17. Model input

    Issues

    R−D -7.6

    No sourced issue score. Same treatment as finance.

  18. Model input

    Polling

    R−D -11.7

    Individual polls -7.1 (80%) and the Wikipedia average -8.1 (20%). Named support R−D -7.4. Allocated support R−D -7.3. Named support does not move. Only the undecided line is split, 50.4% Republican and 49.6% Democratic. That is the 2024 two-party Republican share 50.7 moved halfway to 50 and capped at 60/40. A named third-party vote stays third-party. Banned individual rows excluded: 0. State miss shrunk 40% toward zero: -4.38. Public pollsters: 14. Outliers: 2. Recency half-life 16 days. Sample weight n/(n+350). A registered-voter poll is 0.90. An internal poll, or a poll sponsored by one party, is weighted 0.20, and only when a public poll is also in the race. An internal-only file is dropped. A poll that names both parties is not an internal. A poll more than 8 points from the median of the others is cut in half.

  19. Model input

    Candidate

    R+0.00 reaches the result

    Open seat. No incumbency term. A negative popularity score is not added on top of the office baseline. No overperformance. An open seat, a scandal, or a missing incumbent gets none.

  20. Model input

    Halfway floor

    Not applied

    Not applied. The state's 2024 presidential margin was inside 10 points, or there is no polling term.

  21. Model input

    Pooling

    35% of the way from each history block toward the polling term

    Otherwise the shrink is 35%.

  22. Model input

    Prediction market

    93% win probability

    Jocelyn Benson 93.2% is a win probability, not a vote share. Republican win probability 6.8 from Kalshi 7.3% Republican; Polymarket 6.2% Republican. A price of 50 is a tie. Each point above 50 is 0.35 margin points, capped at 12, so the raw margin is -12.0. That margin is shrunk 40% toward the pre-market margin -6.7, which leaves -9.9. It enters once, at 5.0%. The polling term is not nudged. Books under $10,000 and primary markets are ignored.

  23. Model input

    State bend

    None

    Not applied.

  24. Model input

    Weights

    polling 20.4% · history 7.5% · candidate 7.4% · electorate 4.7% · stateEnv 4.7% · national 4.7% · turnout 2.8% · demographics 2.8% · finance 1.9% · issues 1.9% · stateLean 14.9% · trump 11.2% · favorability 10.3% · market 5.0%

    History is lighter. State partisan lean, Trump popularity, and candidate favorability are their own terms. A market, when it qualifies, scales every other weight and is not taken out of polling alone.

  25. County-sum margin

    -6.9

    This is the sum of the reporting units after each unit moved off its own history. It is not the poll average.

  26. 80% interval

    -13.0 to -0.8

    10th to 90th percentile of 50,000 draws. Poll, national, state, turnout, and candidate error.

  27. 95% interval

    -16.2 to 2.4

    2.5th to 97.5th percentile. Senate and governor state errors in the same state share a correlation of 0.30. The band shown is the marginal interval.

Wikipedia, 2026 United States gubernatorial elections (general-election infobox) www.wilx.com/2025/01/22/report-secretary-state-jocelyn-benson-accidentally-announces-run-governor/