1611 Forecasting

Kansas

Kansas

Governor

Open seat

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

RTy Masterson, R

Ty Masterson

Republican

546,586 votesWin probability 87.2%

DCindy Holscher, D

Cindy Holscher

Democratic

489,868 votesWin probability 12.8%

Other

19,112 votes

Margin

R+5.4

Win probability

87.2%

80% interval

D+0.7 to R+11.5

95% interval

D+4.0 to R+14.6

Market

75%

Ty Masterson · 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. 1,055,566 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
Johnson CountyDCindy Holscher, DCindy HolscherDD+15.356.8%278,704
Sedgwick CountyRTy Masterson, RTy MastersonRR+4.251.2%173,615
Shawnee CountyDCindy Holscher, DCindy HolscherDD+11.054.6%66,331
Douglas CountyDCindy Holscher, DCindy HolscherDD+46.672.4%47,054
Wyandotte CountyDCindy Holscher, DCindy HolscherDD+33.165.6%41,024
Leavenworth CountyRTy Masterson, RTy MastersonRR+13.055.6%29,629
Butler CountyRTy Masterson, RTy MastersonRR+30.764.4%26,134
Reno CountyRTy Masterson, RTy MastersonRR+22.760.4%21,840
Riley CountyDCindy Holscher, DCindy HolscherDD+11.955.1%19,710
Saline CountyRTy Masterson, RTy MastersonRR+19.558.8%18,830
Miami CountyRTy Masterson, RTy MastersonRR+29.463.8%15,148
Crawford CountyRTy Masterson, RTy MastersonRR+13.255.7%13,242
Harvey CountyRTy Masterson, RTy MastersonRR+10.254.2%13,041
McPherson CountyRTy Masterson, RTy MastersonRR+29.463.8%11,434
Ellis CountyRTy Masterson, RTy MastersonRR+32.365.3%10,954
Cowley CountyRTy Masterson, RTy MastersonRR+28.063.1%10,949
Pottawatomie CountyRTy Masterson, RTy MastersonRR+36.467.3%10,922
Lyon CountyRTy Masterson, RTy MastersonRR+2.550.3%10,747
Franklin CountyRTy Masterson, RTy MastersonRR+28.163.1%10,302
Montgomery CountyRTy Masterson, RTy MastersonRR+41.870.0%10,086
Finney CountyRTy Masterson, RTy MastersonRR+23.560.8%8,741
Barton CountyRTy Masterson, RTy MastersonRR+44.571.3%8,569
Sumner CountyRTy Masterson, RTy MastersonRR+37.467.8%8,552
Jefferson CountyRTy Masterson, RTy MastersonRR+23.861.0%8,048
Geary CountyRTy Masterson, RTy MastersonRR+8.853.5%7,428
Dickinson CountyRTy Masterson, RTy MastersonRR+42.470.3%7,413
Cherokee CountyRTy Masterson, RTy MastersonRR+42.270.2%7,067
Ford CountyRTy Masterson, RTy MastersonRR+27.762.9%6,667
Labette CountyRTy Masterson, RTy MastersonRR+26.662.4%6,422
Osage CountyRTy Masterson, RTy MastersonRR+33.465.8%6,398
Atchison CountyRTy Masterson, RTy MastersonRR+24.161.1%5,882
Neosho CountyRTy Masterson, RTy MastersonRR+35.666.9%5,500
Bourbon CountyRTy Masterson, RTy MastersonRR+43.170.7%5,328
Jackson CountyRTy Masterson, RTy MastersonRR+29.764.0%5,248
Marion CountyRTy Masterson, RTy MastersonRR+36.467.3%4,759
Nemaha CountyRTy Masterson, RTy MastersonRR+52.475.3%4,556
Allen CountyRTy Masterson, RTy MastersonRR+33.065.6%4,540
Linn CountyRTy Masterson, RTy MastersonRR+52.675.4%4,067
Marshall CountyRTy Masterson, RTy MastersonRR+33.465.8%4,027
Seward CountyRTy Masterson, RTy MastersonRR+28.663.4%3,701
Coffey CountyRTy Masterson, RTy MastersonRR+43.470.8%3,549
Brown CountyRTy Masterson, RTy MastersonRR+36.667.4%3,452
Clay CountyRTy Masterson, RTy MastersonRR+42.770.5%3,334
Pratt CountyRTy Masterson, RTy MastersonRR+37.868.0%3,310
Cloud CountyRTy Masterson, RTy MastersonRR+46.172.1%3,281
Rice CountyRTy Masterson, RTy MastersonRR+44.271.2%3,215
Kingman CountyRTy Masterson, RTy MastersonRR+47.873.0%3,200
Wabaunsee CountyRTy Masterson, RTy MastersonRR+35.066.6%3,110
Anderson CountyRTy Masterson, RTy MastersonRR+46.272.2%3,074
Thomas CountyRTy Masterson, RTy MastersonRR+53.575.8%2,970
Wilson CountyRTy Masterson, RTy MastersonRR+50.274.2%2,921
Doniphan CountyRTy Masterson, RTy MastersonRR+52.275.2%2,900
Russell CountyRTy Masterson, RTy MastersonRR+49.373.7%1,941
Mitchell CountyRTy Masterson, RTy MastersonRR+50.374.3%1,865
Ottawa CountyRTy Masterson, RTy MastersonRR+54.476.3%1,765
Greenwood CountyRTy Masterson, RTy MastersonRR+48.373.2%1,695
Morris CountyRTy Masterson, RTy MastersonRR+33.365.8%1,641
Ellsworth CountyRTy Masterson, RTy MastersonRR+38.968.5%1,621
Phillips CountyRTy Masterson, RTy MastersonRR+61.679.9%1,614
Washington CountyRTy Masterson, RTy MastersonRR+55.877.0%1,587
Pawnee CountyRTy Masterson, RTy MastersonRR+38.168.2%1,573
Sherman CountyRTy Masterson, RTy MastersonRR+57.778.0%1,524
Harper CountyRTy Masterson, RTy MastersonRR+52.175.2%1,502
Rooks CountyRTy Masterson, RTy MastersonRR+59.879.0%1,490
Republic CountyRTy Masterson, RTy MastersonRR+53.375.8%1,436
Norton CountyRTy Masterson, RTy MastersonRR+55.776.9%1,335
Grant CountyRTy Masterson, RTy MastersonRR+52.075.1%1,305
Gray CountyRTy Masterson, RTy MastersonRR+58.778.4%1,289
Barber CountyRTy Masterson, RTy MastersonRR+60.979.5%1,276
Scott CountyRTy Masterson, RTy MastersonRR+64.281.2%1,255
Smith CountyRTy Masterson, RTy MastersonRR+57.577.9%1,179
Stafford CountyRTy Masterson, RTy MastersonRR+51.574.9%1,122
Stevens CountyRTy Masterson, RTy MastersonRR+65.181.6%1,078
Osborne CountyRTy Masterson, RTy MastersonRR+55.676.9%1,043
Meade CountyRTy Masterson, RTy MastersonRR+59.078.6%996
Rush CountyRTy Masterson, RTy MastersonRR+52.075.1%943
Trego CountyRTy Masterson, RTy MastersonRR+57.477.8%932
Jewell CountyRTy Masterson, RTy MastersonRR+62.980.5%925
Chautauqua CountyRTy Masterson, RTy MastersonRR+61.579.8%898
Lincoln CountyRTy Masterson, RTy MastersonRR+52.675.4%886
Woodson CountyRTy Masterson, RTy MastersonRR+48.273.2%885
Chase CountyRTy Masterson, RTy MastersonRR+38.468.3%859
Decatur CountyRTy Masterson, RTy MastersonRR+57.778.0%853
Cheyenne CountyRTy Masterson, RTy MastersonRR+58.778.5%836
Rawlins CountyRTy Masterson, RTy MastersonRR+59.478.8%825
Logan CountyRTy Masterson, RTy MastersonRR+61.079.6%823
Gove CountyRTy Masterson, RTy MastersonRR+64.681.4%821
Sheridan CountyRTy Masterson, RTy MastersonRR+68.983.5%807
Ness CountyRTy Masterson, RTy MastersonRR+67.082.5%802
Elk CountyRTy Masterson, RTy MastersonRR+57.577.9%786
Kearny CountyRTy Masterson, RTy MastersonRR+56.377.3%765
Graham CountyRTy Masterson, RTy MastersonRR+54.276.2%756
Haskell CountyRTy Masterson, RTy MastersonRR+53.075.6%751
Edwards CountyRTy Masterson, RTy MastersonRR+53.475.7%746
Kiowa CountyRTy Masterson, RTy MastersonRR+60.179.1%651
Morton CountyRTy Masterson, RTy MastersonRR+63.280.7%623
Clark CountyRTy Masterson, RTy MastersonRR+60.679.4%596
Hodgeman CountyRTy Masterson, RTy MastersonRR+60.879.5%567
Comanche CountyRTy Masterson, RTy MastersonRR+57.077.6%514
Wichita CountyRTy Masterson, RTy MastersonRR+65.081.6%506
Lane CountyRTy Masterson, RTy MastersonRR+58.278.2%495
Hamilton CountyRTy Masterson, RTy MastersonRR+53.976.0%479
Wallace CountyRTy Masterson, RTy MastersonRR+74.586.4%440
Stanton CountyRTy Masterson, RTy MastersonRR+53.175.6%390
Greeley CountyRTy Masterson, RTy MastersonRR+61.079.7%349

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

    None reported

    No verified 2026 returned-mail or in-person ballots for this state in the October 7 file. Nothing was imputed. Day-1 early vote is a signal, not a statewide margin. 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 4.6

    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+11.2 w5, 2022 open seat R+38.8 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 3.9

    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 5.1

    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. No verified 2026 returned-mail or in-person ballots for this state in the October 7 file. Nothing was imputed. Day-1 early vote is a signal, not a statewide margin.

  10. Model input

    National environment

    R−D 2.9

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

  11. Model input

    State environment

    R−D 4.3

    History plus 45% of the transmitted swing.

  12. Model input

    State partisan lean

    R−D 16.1

    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 -4.3

    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 0.46), 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 2.2

    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 5.3

    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 5.3

    No sourced issue score. Same treatment as finance.

  18. Model input

    Polling

    R−D 6.7

    Individual polls 4.7 (80%) and the Wikipedia average 5.8 (20%). Named support R−D 4.5. Allocated support R−D 4.9. Named support does not move. Only the undecided line is split, 54.1% Republican and 45.9% Democratic. That is the 2024 two-party Republican share 58.2 moved halfway to 50 and capped at 60/40. A named third-party vote stays third-party. Banned individual rows excluded: 1. State miss shrunk 40% toward zero: 1.74. Public pollsters: 3. Outliers: 0. 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. At least three public polls from different pollsters, and none is an outlier.

  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

    75% win probability

    Ty Masterson 75.4% is a win probability, not a vote share. Republican win probability 75.4 from Kalshi 74.5% Republican; Polymarket 76.3% 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 8.9. That margin is shrunk 40% toward the pre-market margin 5.3, which leaves 7.4. 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

    5.4

    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

    -0.7 to 11.5

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

  27. 95% interval

    -4.0 to 14.6

    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.kslegislature.org/li/b2021_22/members/sen_corson_ethan_1/