Election Day, Nov 3 4 daysSenate D 90%House D 97%Governors D 92%Forecast updated Oct 30

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Senate · Kansas

Kansas Senate

Adam Hamilton vs Roger Marshall

ForecastD +4.8
Democrat79%
Republican21%
RatingLean D
Full forecast
Brief me as

Neutral view. Pick a side and the War Room briefs you as that campaign's operative.

Vital signs

Campaign health, 0 to 100, from public money, outside spending, ballots and activity
DemocratAdam HamiltonStableBase 68, minus 4 for liabilities
640100
  • Money weight 2574

    Raised $13.5M against $4.8M for Roger Marshall.

  • Cash weight 2065

    $1.7M in the bank against $922K for Roger Marshall. As of 09/30/2026.

  • Air cover weight 1559

    Outside groups spent $24.8M helping Adam Hamilton and $17.1M helping Roger Marshall.

  • Early vote weight 1556

    Registered Democrats cast 42% of the 375,937 ballots in Kansas so far, against 43% for the other party. That is 7.5 points better for Democrats than the forecast expected by now. Counts registration, not votes.

  • National tide weight 1580

    Gallup party identification moved from Republicans 48 Democrats 45 in the third quarter of 2024 to Democrats 50 Republicans 39 in the third quarter of 2026, 14 points toward the Democrats. This race moves 1.00 points for every point the nation moves, so it feels about 14.0 points of that tide, a tailwind for Adam Hamilton.

  • Activity weight 1075

    2 campaign stops by the candidate or surrogates in 30 days. 2 mentions on shows and podcasts in two weeks. 1 story on the On Point news desk in two weeks.

  • −4 Contested items in the watchdog file. 2 allegations on file that the campaign disputes; opponents can run on them.
Open the people file
RepublicanRoger MarshallCriticalBase 39, minus 2 for liabilities
370100
  • Money weight 2526

    Raised $4.8M against $13.5M for Adam Hamilton.

  • Cash weight 2035

    $922K in the bank against $1.7M for Adam Hamilton. As of 09/30/2026.

  • Air cover weight 1541

    Outside groups spent $17.1M helping Roger Marshall and $24.8M helping Adam Hamilton.

  • Early vote weight 1544

    Registered Republicans cast 43% of the 375,937 ballots in Kansas so far, against 42% for the other party. That is 7.5 points worse for Republicans than the forecast expected by now. Counts registration, not votes.

  • National tide weight 1520

    Gallup party identification moved from Republicans 48 Democrats 45 in the third quarter of 2024 to Democrats 50 Republicans 39 in the third quarter of 2026, 14 points toward the Democrats. This race moves 1.00 points for every point the nation moves, so it feels about 14.0 points of that tide, a headwind for Roger Marshall.

  • Activity weight 10100

    3 campaign stops by the candidate or surrogates in 30 days. 4 mentions on shows and podcasts in two weeks. $140K in Google political ads this cycle. 1 story on the On Point news desk in two weeks.

  • −2 Contested items in the watchdog file. 1 allegation on file that the campaign disputes; opponents can run on them.
Open the people file

How each side wins

From the forecast, the polls, the county map, voter groups, money and ballots
If you work for Adam Hamilton
  1. Protect the lead

    Adam Hamilton leads by 4.8 in the forecast and wins 79% of simulations. The cushion is about 55,448 votes; a one point swing is about 5,728 voters changing sides.

  2. The range

    In 8 of 10 simulations the result lands between R +2.7 and D +12.5. A normal polling error decides it.

  3. The polls

    The polls page average is D +4.6. Your best recent poll is Washington Post/Schar School at D +9.0; your worst is RedBox Research (D) at R +2.1. 14 polls in the last 30 days.

  4. Turn out the base

    The biggest vote banks for Democrats: Johnson, a projected net 104,820 votes; Douglas, a projected net 30,484 votes; Wyandotte, a projected net 20,184 votes. Every point of extra turnout here is worth more than persuasion anywhere else.

  5. Win the battlegrounds

    The large counties within 12 points: Sedgwick, D +1.0, 15.9% of the vote; Leavenworth, D +1.5, 2.7% of the vote; Saline, R +11.9, 1.8% of the vote; Crawford, D +1.3, 1.2% of the vote.

  6. Where you run behind the 2024 map

    Against the 2024 presidential vote, Adam Hamilton runs furthest behind in Pottawatomie, Sedgwick, Butler. That is where the forecast sees voters who backed your side two years ago and have not come back yet.

  7. The coalition levers

    Groups big enough to move the race: White voters, 88% of voters, 48 to 48, where a 5 point gain is worth 4.41 points; Voters who cast ballots in 2022 and 2024, 70% of voters, 50 to 46, where a 5 point gain is worth 3.52 points; Voters who find daily costs hard to afford, 58% of voters, 54 to 42, where a 5 point gain is worth 2.92 points.

  8. Where you lose ground

    The forecast's worst groups for Adam Hamilton: Immigration voters 22 to 75, Small counties 34 to 62, Voters without a degree 44 to 53. Cutting the loss here is often cheaper than winning new groups.

  9. The money

    $1.7M cash against $922K. Spend it early on persuasion television in the battleground counties and keep a reserve for the last week.

  10. The early vote

    Registered Democrats cast 42% of the 375,937 ballots in Kansas so far, against 43% for the other party. That is 7.5 points better for Democrats than the forecast expected by now.

  11. What the ballots so far say

    The early vote has moved this forecast 0.6 points toward Adam Hamilton. Bank it: chase the remaining mail ballots and low propensity voters who have not voted.

  12. Roger Marshall's strongest asset

    Activity: 3 campaign stops by the candidate or surrogates in 30 days.

  13. An opening

    Tariffs, diesel prices from the Iran war and the beef import waiver hit farmers, and the patient lawsuits; Trump's Kansas approval was 40 percent in a September Emerson poll. Source

If you work for Roger Marshall
  1. Close the gap

    Roger Marshall trails by 4.8 and wins 21% of simulations. Closing it takes about 27,724 voters switching sides, or 55,448 more net votes from new turnout.

  2. The range

    In 8 of 10 simulations the result lands between D +12.5 and R +2.7. A normal polling error decides it.

  3. The polls

    The polls page average is D +4.6. Your best recent poll is RedBox Research (D) at R +2.1; your worst is Washington Post/Schar School at D +9.0. 14 polls in the last 30 days.

  4. Turn out the base

    The biggest vote banks for Republicans: Butler, a projected net 7,072 votes; Pottawatomie, a projected net 4,090 votes; Reno, a projected net 3,989 votes. Every point of extra turnout here is worth more than persuasion anywhere else.

  5. Win the battlegrounds

    The large counties within 12 points: Sedgwick, D +1.0, 15.9% of the vote; Leavenworth, D +1.5, 2.7% of the vote; Saline, R +11.9, 1.8% of the vote; Crawford, D +1.3, 1.2% of the vote.

  6. Where you run behind the 2024 map

    Against the 2024 presidential vote, Roger Marshall runs furthest behind in Ellis, Johnson, Crawford. That is where the forecast sees voters who backed your side two years ago and have not come back yet.

  7. The coalition levers

    Groups big enough to move the race: White voters, 88% of voters, 48 to 48, where a 5 point gain is worth 4.41 points; Voters who cast ballots in 2022 and 2024, 70% of voters, 46 to 50, where a 5 point gain is worth 3.52 points; Voters who find daily costs hard to afford, 58% of voters, 42 to 54, where a 5 point gain is worth 2.92 points.

  8. Where you lose ground

    The forecast's worst groups for Roger Marshall: Independents 21 to 72, 2024 nonvoters and third party voters 30 to 65, Moderates 30 to 65. Cutting the loss here is often cheaper than winning new groups.

  9. The money

    $922K cash against $1.7M. Outspent: lean on earned media, digital, field and the outside groups, and pick the two or three media markets that decide it.

  10. The early vote

    Registered Republicans cast 43% of the 375,937 ballots in Kansas so far, against 42% for the other party. That is 7.5 points worse for Republicans than the forecast expected by now.

  11. What the ballots so far say

    The early vote has moved this forecast 0.6 points away from Roger Marshall. Election Day has to make it up: the remaining vote must break harder your way than the forecast expects.

  12. Adam Hamilton's strongest asset

    National tide: Gallup party identification moved from Republicans 48 Democrats 45 in the third quarter of 2024 to Democrats 50 Republicans 39 in the third quarter of 2026, 14 points toward the Democrats.

  13. An opening

    Marshall's camp ties him to Schumer and national Democrats and attacks his handling of a 2005 church camp report, calling him unfit; Hamilton says the inquiry was inconclusive and he should have called police. Source

The map for Hamilton

County projections from the forecast
Vote banksWhere the biggest net margins come from
CountyForecastVote shareNet D
JohnsonD +35.925.5%+104,820
DouglasD +57.74.6%+30,484
WyandotteD +46.83.8%+20,184
ShawneeD +19.46.3%+13,930
BattlegroundsLarge counties within 12 points
CountyForecastVote shareNet D
SedgwickD +1.015.9%+1,880
LeavenworthD +1.52.7%+471
SalineR +11.91.8%-2,407
CrawfordD +1.31.2%+179
Behind the 2024 mapRunning furthest behind the last presidential vote
CountyForecastVote shareNet D
PottawatomieR +35.71%-4,090
SedgwickD +1.015.9%+1,880
ButlerR +26.02.4%-7,072

The coalition

Hamilton against Marshall among the groups that can move it, from the forecast's voter group estimates
Swing groups
  • White voters88% of voters · a 5 point gain is worth 4.4
    4849
  • Voters who cast ballots in 2022 and 202471% of voters · a 5 point gain is worth 3.5
    5046
  • Voters who find daily costs hard to afford58% of voters · a 5 point gain is worth 2.9
    5442
  • Voters without a degree57% of voters · a 5 point gain is worth 2.9
    4453
Weakest groups
  • Immigration voters10% of voters · a 5 point gain is worth 0.5
    2275
  • Small counties37% of voters · a 5 point gain is worth 1.8
    3462
  • Voters without a degree57% of voters · a 5 point gain is worth 2.9
    4453
HamiltonMarshall

Scouting report

From the Watchdog people files, each line with its source
Adam Hamilton
  • Main message. He runs as an independent minded Democrat leading from the center, focused on pocketbook costs, and says there is room for Trump voters in his campaign. Source
  • Biggest vulnerability as opponents frame it. Marshall's camp ties him to Schumer and national Democrats and attacks his handling of a 2005 church camp report, calling him unfit; Hamilton says the inquiry was inconclusive and he should have called police. Source
  • Strongest coalition. Unaffiliated voters, about 29 percent of Kansas registrants; Emerson in September had him up 42 to 27 among independents and 45 to 43 overall. Source
  • Farm opening. The Kansas Livestock Association declined to endorse Marshall this cycle and farmers are angry over tariffs and diesel, though many still distrust Democrats on farming. Source
  • Recent event. Cook moved the race to Toss Up on October 6, 2026, and Trump rallied near Wichita for Marshall on October 19. Source
  • Money edge. He outraised Marshall nearly three to one through September 30, but Marshall's side had nearly ten times the ad reservations as of October 2. Source

Top donor blocs: Small donors, Party and leadership, Ideological groups

Roger Marshall
  • Main message. Keep Trump's agenda going and keep the Senate Republican; he told voters control of the Senate goes through Kansas. Source
  • Biggest vulnerability as opponents frame it. Tariffs, diesel prices from the Iran war and the beef import waiver hit farmers, and the patient lawsuits; Trump's Kansas approval was 40 percent in a September Emerson poll. Source
  • Strongest coalition. Trump aligned Republicans, who outnumber Democrats about 900,000 to 500,000 in registration; he drew more than 6,000 to a Trump rally near Wichita on October 19. Source
  • Notable event. The Kansas Livestock Association declined to endorse him for the first time since 2016. Source
  • Money picture. Outraised about three to one by Hamilton through September 30, but SLF, Main Street Fund, AFP Action and Club for Growth Action are covering the gap. Source

Top donor blocs: Party and leadership, Billionaire megadonor, Sugar and agriculture

The forecast

Margin over recent runs
R +2.0D +4.821 runs agonow
Now
D +4.8
8 in 10 land between
D +12.5 and R +2.7
Polling average
D +4.6
Partisan lean
R +14.9
Early vote effect
D +0.6

Recent polls

Last 45 days
PollsterDays agoSampleResult
On Point Polling0479 LVD +1.8
RedBox Research (D)01,301 LVR +2.1
CNN/SSRS0838 LVD +2.9
Washington Post/Schar School01,000 LVD +9.0
Emerson College / Nexstar0800 LVD +4.8
InsiderAdvantage1800 LVR +0.9
InsiderAdvantage51,200 LVD +1.1
GBAO (D)11600 LVD +2.6
GBAO for Hamilton (D)11600 LVD +2.7
YouGov112,255 LVD +2.2
Trafalgar Group (R)141,095 LVD +2.1
New York Times/Siena15605 LVR +0.6

Money and the air war

Reports as of 09/30/2026
HamiltonMarshall
Raised$13.5M$4.8M
Spent$2.4M$5.6M
Cash on hand$1.7M$922K
Outside money for$24.8M$17.1M
Google ads$0$140K
Biggest outside spenders
  • Senate Leadership Fund against Adam Hamilton$6.0M
  • People Over Politics Action Fund against Roger Marshall$3.4M
  • WinSenate against Roger Marshall$3.3M
  • Club for Growth Action against Adam Hamilton$2.5M
  • Main Street Fund against Adam Hamilton$2.0M
  • Americans for Prosperity Action against Adam Hamilton$2.0M
Ad buys
  • Outside groups combined, airings 9/28 to 10/11 Source$6.7M
  • Senate Majority PAC affiliates, last major buy, announced Oct 28 $5.7M
Follow the money

The early vote

Kansas, through 2026-10-30
Ballots cast
375,937
Party data
Reported by the state
Ballot margin
R +0.8
Forecast expected
R +8.3
Against expectation
7.5 points better for Democrats

Party registration of who has voted, not how they voted.

Open the early vote tracker

Media watch

Who is putting this race in front of an audience
  • 2026-10-27
    Alex Miller reporter

    Interviewed Sen. Roger Marshall in Wichita for Fox News Digital, where Marshall said that if Republicans lose Kansas he does not see how they keep the Senate. Source

  • 2026-10-26
    Simon Rosenberg commentator, leans D

    Interviewed Democrat Adam Hamilton on his campaign bus for Hopium Chronicles, where Hamilton said early voting looks really strong and slammed Roger Marshall for skipping town halls. Source

  • 2026-10-26
    Greg Orman commentator, leans other

    On the RealClearPolitics podcast he said many Kansans remain angry the Epstein files are unreleased, as an Epstein themed ad targets Roger Marshall in a race within one point. Source

  • 2026-10-22
    Harry Enten analyst

    On Anderson Cooper 360 he said polling in the Kansas Senate race is tied and listed it among the races that could hand Democrats a majority. Source

  • 2026-10-20
    Karl Rove commentator, leans R

    Said Democrats will fall short in Kansas but it is a race. Source

  • 2026-10-20
    Nathan Gonzales analyst

    Inside Elections moved the Kansas Senate race between Roger Marshall and Adam Hamilton from Likely Republican to Tilt Republican. Source

  • 2026-10-16
    Harry Enten analyst

    Named Kansas among toss up Senate races, with polling showing a tie or Democrats up a few points. Source

  • 2026-10-06
    Krystal Ball host, leans other

    Breaking Points ran a 'GOP Panic Over Kansas' segment on Senate Leadership Fund spending about $14 million to rescue Sen. Roger Marshall. Source

  • 2026-10-02
    David Chalian analyst

    Said the GOP moving money to defend Roger Marshall in Kansas was not on anyone's bingo card. Source

  • 2026-09-22
    Remy Numa analyst

    Fox News Power Rankings moved Kansas Senate from Likely R to Lean R. Source

  • 2026-09-02
    Tim Miller podcaster, leans D

    Hosted Rich Baris, who said Kansas, Nebraska, Montana, Texas and Ohio could all be Democratic openings. Source

Media watch

On the trail

Rallies and events, newest first
  • 2026-10-31
    Donald Trump announced in Salina

    Announced Saturday rally, doors 8:30 a.m., Trump to speak at noon, RSVP required, venue not yet announced. Source

  • 2026-10-26
    JD Vance announced in Topeka

    Announced Monday rally at HME Inc. Haas Group, hosted by Trump 47 Committee, Vance to speak at 5:15 p.m. Source

  • 2026-10-26
    Adam Hamilton tour stop in Pratt

    Monday bus tour stop, spoke to a crowd around the bandstand on a 10 day tour of more than 20 communities. Source

  • 2026-10-24
    Adam Hamilton tour stop in Holton

    Saturday statewide bus tour stop at Linscott Park. Source

  • 2026-10-19
    Donald Trump rally in Park City

    Heartland Credit Union Arena rally near Wichita. Source

  • 2026-10-19
    Roger Marshall rally in Park City

    Marshall spoke before President Trump at Heartland Credit Union Arena, focusing on Adam Hamilton, with Ted Nugent and Agriculture Secretary Brooke Rollins also present. Source

  • 2026-09-14
    JD Vance event in Olathe

    Campaign stop at an Olathe manufacturer. Source

From the news desk

Races that move with this one

When the polls miss here, they tend to miss there too