Kansas Senate
Tue, Nov 3 · Seat held by Roger Marshall Republican since Jan 2021
3 candidates. Sorted by most raised, FEC through Oct 14.
- Adam Hamilton DemocraticDemocratic$19.2M
- Roger Marshall RepublicanIncumbent$5.4M
- David C Graham LibertarianLibertarianNo FEC filing found
Average of 5 polls, Sep 22 to Oct 28, from VoteHub · how it’s calculatedNewest · Emerson College, field dates Oct 26 to Oct 28, released Oct 30, 800 likely votersPolls updated Oct 31, 4:06 a.m. ET, from VoteHub
Hamilton 49.3Marshall 45.8Graham 3
Polls over time
7 polls, through Election Day Nov 3The thick line is the 7-week average, not a forecast. How it’s calculated. All polls. Polls updated Oct 31, 4:06 a.m. ET, from VoteHub.
The polls in this chart (7)
3 polls released in the last 14 days · latest results range from 47 to 52% (D), 43 to 48% (R) and 2 to 4% (L) (newest 5 polls on the chart)
7 of the 7 polls for this race, each naming a candidate, plotted on the field end date.
| Pollster | Field dates | Released | Sample | Hamilton | Marshall | Graham |
|---|---|---|---|---|---|---|
| Emerson College | Oct 26 to Oct 28 | Oct 30 | 800 likely voters | 48.7 | 45.2 | 2.9 |
| The Washington Post/George Mason University Schar School of Policy and Government | Oct 22 to Oct 26 | Oct 30 | 801 likely voters | 52 | 43 | 4 |
| CNN/SSRS | Oct 20 to Oct 26 | Oct 29 | 838 likely voters | 49 | 45 | — |
| InsiderAdvantage | Oct 13 to Oct 14 | Oct 16 | 1,200 likely voters | 47 | 48 | — |
| Wedgewood Polls | Sep 22 to Sep 24 | Sep 25 | 500 likely voters | 50 | 48 | 2 |
| Emerson College | Sep 15 to Sep 16 | Sep 18 | 750 likely voters | 45 | 43 | 4 |
| Tavern Research | Jan 26 to Jan 28 | May 1 | 1,013 likely voters | 46 | 54 | — |
What changed in this race
Newest firstNEW POLLKansas Senate
Kansas Senate: Adam Hamilton 49.5, Roger Marshall 47.1
Emerson College, Oct 26 to Oct 28, 800 likely voters
NEW POLLKansas Senate
Kansas Senate: Adam Hamilton 52, Roger Marshall 43
The Washington Post/George Mason University Schar School of Policy and Government, Oct 22 to Oct 26, 801 likely voters
More about this race
Candidates on the ballot
- Adam HamiltonDemocratic
- Roger MarshallIncumbentRepublican
- David C GrahamLibertarian
Party nominees only, not the certified ballot.
Source: sos.ks.gov, dated Oct 28
Seat on the ballot, shift from 2014 to 2020: 0.8 points toward Republicans (Republican by 10.6 in 2014, Republican by 11.4 in 2020).
Vote in Kansas
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History (17 elections for this seat)
- Votes for listed candidates
- 1,004,956
- Election day
- November 8, 2022
US Senate, Kansas, 2022, every candidate Candidate Party Votes and share Share RepublicanJerry MoranWon Republican 602,97660.0% DemocraticMark R. Holland Democratic 372,21437.0% LibertarianDavid C Graham Libertarian 29,7663.0% - Votes for listed candidates
- 1,367,755
- Election day
- November 3, 2020
US Senate, Kansas, 2020, every candidate Candidate Party Votes and share Share RepublicanRoger MarshallWon Republican 727,96253.2% DemocraticBarbara Bollier Democratic 571,53041.8% LibertarianJason Buckley Libertarian 68,2635.0% - Votes for listed candidates
- 1,177,922
- Election day
- November 8, 2016
US Senate, Kansas, 2016, every candidate Candidate Party Votes and share Share RepublicanJerry MoranWon Republican 732,37662.2% DemocraticPatrick Wiesner Democratic 379,74032.2% LibertarianRobert D. Garrard Libertarian 65,7605.6% Scattered write-ins Write-in 460.0% - Votes for listed candidates
- 866,191
- Election day
- November 4, 2014
US Senate, Kansas, 2014, every candidate Candidate Party Votes and share Share RepublicanPat RobertsWon Republican 460,35053.1% IndependentGreg Orman Independent 368,37242.5% LibertarianRandall Batson Libertarian 37,4694.3% - Votes for listed candidates
- 837,692
- Election day
- November 2, 2010
US Senate, Kansas, 2010, every candidate Candidate Party Votes and share Share RepublicanJerry MoranWon Republican 587,17570.1% DemocraticLisa Johnston Democratic 220,97126.4% LibertarianMichael Wm. Dann Libertarian 17,9222.1% OtherJoseph "Joe" K. Bellis Other 11,6241.4% - Votes for listed candidates
- 1,210,690
- Election day
- November 4, 2008
US Senate, Kansas, 2008, every candidate Candidate Party Votes and share Share RepublicanPat RobertsWon Republican 727,12160.1% DemocraticJim Slattery Democratic 441,39936.5% LibertarianRandall L. Hodgkinson Libertarian 25,7272.1% OtherJoseph L. Martin Other 16,4431.4% - Votes for listed candidates
- 1,129,022
- Election day
- November 2, 2004
US Senate, Kansas, 2004, every candidate Candidate Party Votes and share Share RepublicanSam BrownbackWon Republican 780,86369.2% DemocraticLee Jones Democratic 310,33727.5% LibertarianSteven A. Rosile Libertarian 21,8421.9% OtherGeorge Cook Other 15,9801.4% - Votes for listed candidates
- 776,850
- Election day
- November 5, 2002
US Senate, Kansas, 2002, every candidate Candidate Party Votes and share Share RepublicanPat RobertsWon Republican 641,07582.5% LibertarianSteven A. Rosile Libertarian 70,7259.1% OtherGeorge Cook Other 65,0508.4% - Votes for listed candidates
- 727,236
- Election day
- November 3, 1998
US Senate, Kansas, 1998, every candidate Candidate Party Votes and share Share RepublicanSam BrownbackWon Republican 474,63965.3% DemocraticPaul Feleciano, Jr. Democratic 229,71831.6% LibertarianTom Oyler Libertarian 11,5451.6% OtherAlvin Bauman Other 11,3341.6% - Votes for listed candidates
- 1,052,300
- Election day
- November 5, 1996
US Senate, Kansas, 1996, every candidate Candidate Party Votes and share Share RepublicanPat RobertsWon Republican 652,67762.0% DemocraticSally Thompson Democratic 362,38034.4% OtherMark S. Marney Other 24,1452.3% LibertarianSteven Rosile Libertarian 13,0981.2% - Votes for listed candidates
- 1,064,716
- Election day
- not on file
- Type
- Special election
US Senate, Kansas, 1996, every candidate Candidate Party Votes and share Share RepublicanSam BrownbackWon Republican 574,02153.9% DemocraticJill Docking Democratic 461,34443.3% OtherDonald R. Klaassen Other 29,3512.8% - Votes for listed candidates
- 1,126,447
- Election day
- November 3, 1992
US Senate, Kansas, 1992, every candidate Candidate Party Votes and share Share RepublicanBob DoleWon Republican 706,24662.7% DemocraticGloria O'Dell Democratic 349,52531.0% IndependentChristina Campbell-Cline Independent 45,4234.0% LibertarianMark B. Kirk Libertarian 25,2532.2% - Votes for listed candidates
- 786,235
- Election day
- November 6, 1990
US Senate, Kansas, 1990, every candidate Candidate Party Votes and share Share RepublicanNancy Landon KassebaumWon Republican 578,60573.6% DemocraticDick Williams Democratic 207,49126.4% Scattered write-ins Write-in 1390.0% - Votes for listed candidates
- 823,566
- Election day
- November 4, 1986
US Senate, Kansas, 1986, every candidate Candidate Party Votes and share Share RepublicanBob DoleWon Republican 576,90270.0% DemocraticGuy MacDonald Democratic 246,66430.0% - Votes for listed candidates
- 996,729
- Election day
- November 6, 1984
US Senate, Kansas, 1984, every candidate Candidate Party Votes and share Share RepublicanNancy Landon KassebaumWon Republican 757,40276.0% DemocraticJames R. Maher Democratic 211,66421.2% OtherLucille Bieger Other 9,3800.9% OtherMarian Ruck Jackson Other 6,9180.7% LibertarianDouglas N. Merritt Libertarian 6,7550.7% OtherFreda H. Steele Other 4,6100.5% - Votes for listed candidates
- 938,957
- Election day
- November 4, 1980
US Senate, Kansas, 1980, every candidate Candidate Party Votes and share Share RepublicanBob DoleWon Republican 598,68663.8% DemocraticJohn Simpson Democratic 340,27136.2% - Votes for listed candidates
- 748,839
- Election day
- November 7, 1978
US Senate, Kansas, 1978, every candidate Candidate Party Votes and share Share RepublicanNancy Landon KassebaumWon Republican 403,35453.9% DemocraticBill Roy Democratic 317,60242.4% OtherJames R. Maher Other 22,4973.0% OtherRussell Mikels Other 5,3860.7%
1978 to 2022: MIT Election Data and Science Lab, U.S. Senate statewide 1976-2024, retrieved Oct 28, 2026. Compiled by MIT Election Data and Science Lab (MEDSL) from official returns; not an official source
Download and cite
Cite this page
Election Wrld. (2026). US Senate in Kansas, election results. https://www.electionwrld.com/ks/us-senate. Retrieved October 31, 2026.
Sources
Sources: U.S. Senate: senators contact information XML (class per senator) (US government work, public domain), retrieved Oct 28, 2026; MIT Election Data and Science Lab, U.S. Senate statewide 1976-2024 (CC0 1.0), retrieved Oct 28, 2026, compiled by MIT Election Data and Science Lab (MEDSL) from official returns, not an official source; unitedstates/congress-legislators (current) (CC0-1.0), retrieved Oct 28, 2026, compiled by the @unitedstates project volunteers (rosters from official congressional sources) from official returns, not an official source.
DataState data (JSON)Sources: MIT Election Data and Science Lab, U.S. Senate statewide 1976-2024, VoteHub polls (CC BY 4.0), FEC, DIME (ODC-BY), Portraits: unitedstates/images (public domain)Data as of Oct 30, 2026 (candidate list Oct 28, 2026)