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Race · U.S. Senate · Kansas · 2026

Kansas · U.S. Senate · 2026

Seat U.S. Senate, Class 2

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U.S. Senate, Class 2 · Incumbent running
DEMNominee
Adam Hamilton
17%Hume Outlook · Hume model estimate · as of 2026-10-28
LIBOn the ballot
David Graham
—Not published for this candidate
REPNominee
Roger Marshall incumbent
83%Hume Outlook · Hume model estimate · as of 2026-10-28
IncumbentRoger Marshall

Hume Outlook

hume-2026.10-r1 · Forecast as of Oct 28, 2026
83% Roger Marshall · RepublicanChance to win, between the two named candidates
REP Roger Marshall 83%
DEM Adam Hamilton 17%
  • Hume model estimate · built on polls, fundamentals, and markets
Latest poll Marshall 45.0% · Hamilton 49.0% CNN/SSRS · 2026-10-26
Seat lean (Hume PVI) R+8 cycles 2020, 2024
Prior result, this seat REP 53.2% 2020 general · margin 11.4%

Side by side

3 candidates · 5 measures
FEC summary through 2026-10-14
MeasureDEMHamiltonLIBGrahamREPMarshall
Total receiptsUSD, cycle to date, all authorized committees
Adam Hamilton$19,175,044.34
David GrahamNot available No FEC summary is available for this candidate.
Roger Marshall$5,350,063.53
Total disbursementsUSD, cycle to date
Adam Hamilton$16,300,680.60
David GrahamNot available No FEC summary is available for this candidate.
Roger Marshall$6,245,275.71
Cash on handUSD, close of the covered period
Adam Hamilton$2,874,363.74
David GrahamNot available No FEC summary is available for this candidate.
Roger Marshall$809,806.46
Latest pollpercent, as stored
Adam Hamilton49.0%CNN/SSRS · 2026-10-26
David GrahamNot available Not named in the newest listed poll (2026-10-26)
Roger Marshall45.0%CNN/SSRS · 2026-10-26
Seat lean (Hume PVI)identical for every candidate
Adam HamiltonR+8seat-level
David GrahamR+8seat-level
Roger MarshallR+8seat-level
Money is each candidate's FEC summary: every committee the candidate has authorized, combined, as filed through the coverage date shown.

Polling

4 listed · newest first
Newest field end 2026-10-26
Pollster / sponsorField datesSampleHamiltonGrahamMarshallOthers
CNN/SSRS2026-10-20 to 2026-10-26LV · n=83849.0%not named45.0%none
InsiderAdvantage2026-10-13 to 2026-10-14LV · n=1,20047.0%not named48.0%none
Emerson College2026-09-15 to 2026-09-16LV · n=75045.0%4.0%43.0%none
Tavern Research2026-01-26 to 2026-01-28LV · n=1,01346.0%not named54.0%none
Polling data CC BY 4.0 (FiveThirtyEight / VoteHub).

    Seat lean · Hume PVI

    as of cycle 2024
    R+8
    Lean (D minus R, points)
    -8.224
    Presidential cycles
    2020, 2024
    Computed
    2026-06-08

    Hume PVI is Hidden Levers' own two-party presidential-lean index for the state, not the Cook PVI.

    Prior result, this seat

    election returns

    2020 general

    CandidatePartyVotes% of total
    Roger MarshallREP727,96253.22%
    Barbara BollierDEM571,53041.79%
    Jason BuckleyLIB68,2634.99%

    Total votes 1,367,755 · winning margin 11.44% of total (margin computed here from the cited vote counts)

    Sources: FEC filings (through Oct 14, 2026) · Polls: FiveThirtyEight / VoteHub (CC BY 4.0) · Prior result: MIT Election Data + Science Lab (CC0) · Hume PVI and Hume Outlook: Hidden Levers estimates.

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