2026 Senate race
Kansas Senate
Toss Up Cook Political Report, as of October 6, 2026
Campaigns through 2026-09-30Outside money through 2026-10-18Source: FEC
outside money is 1.5×
what the campaigns raised
The short version
- Adam Hamilton has raised $13.5M to Roger Marshall's $7.0M (1.9x), through September 30, 2026.
- Outside groups have reported $31.6M in general election spending: $16.9M helping the Democrat and $14.7M helping the Republican.
- Largest outside spender: People Over Politics Action Fund, $8.0M opposing Roger Marshall.
Campaign money
Adam Hamilton
- Raised
- $13.5M
- Spent
- $10.4M
- Cash on hand
- $3.2M
- From PACs
- $195K
- From individuals
- $12.2M
- Self funding
- $50K
- Outside money for (general)
- $16.9M
Campaign totals through September 30, 2026.
Roger Marshall
- Raised
- $7.0M
- Spent
- $6.3M
- Cash on hand
- $922K
- From PACs
- $2.8M
- From individuals
- $2.9M
- Self funding
- $0
- Outside money for (general)
- $14.7M
Campaign totals through September 30, 2026.
Outside spending
Not included above: $230K in outside spending that filers reported for the primary, a runoff, or no specific election, involving these two nominees.
Biggest outside spenders, general election
| Spender | Position | Amount |
|---|---|---|
| People Over Politics Action Fund | Oppose Roger Marshall | $8.0M |
| SLF PAC | Oppose Adam Hamilton | $6.0M |
| WinSenate | Oppose Roger Marshall | $3.3M |
| Main Street Fund | Oppose Adam Hamilton | $2.4M |
| Club for Growth Action | Oppose Adam Hamilton | $2.2M |
| Win It Back PAC | Oppose Adam Hamilton | $1.5M |
| Lower Costs NOW | Oppose Roger Marshall | $1.4M |
| Americans for Prosperity Action, Inc. (AFP Action) dba CVA Action and dba Libre Action | Oppose Adam Hamilton | $1.0M |
| Americans for Prosperity Action, Inc. (AFP Action) dba CVA Action and dba Libre Action | Support Roger Marshall | $1.0M |
| New Deal for All, Inc. | Oppose Roger Marshall | $909K |
| The 1861 Initiative | Oppose Roger Marshall | $800K |
| United Futures PAC | Support Adam Hamilton | $623K |
| Lower Costs NOW | Support Adam Hamilton | $520K |
| The Edge Action Fund | Support Adam Hamilton | $495K |
| AB PAC | Support Adam Hamilton | $414K |
Where the outside money came from
For the biggest spenders, the money is followed upstream while a single donor supplied at least half of it. From FEC receipts.
- People Over Politics Action Fund ← $6.2M from United Futures PAC (94% of its reported receipts)
- WinSenate ← $21.1M from SMP (95% of its reported receipts) No donor disclosure
- Main Street Fund ← $1.8M from Main Street Defense Fund (87% of its reported receipts) No donor disclosure
- Win It Back PAC ← $10.8M from Club for Growth Action (59% of its reported receipts) ← whose largest donor is Restoration of America PAC, $20.0M ← whose largest donor is Richard E. Uihlein, $66.7M
- Lower Costs NOW ← $23.0M from SMP (60% of its reported receipts)
These totals come from the 24 and 48 hour notices outside groups must file before ads run. They are the disclosed floor. Spending by groups that do not file independent expenditure notices, such as issue ads paid for by 501(c)(4) groups, does not appear here.
Top PAC donors to each campaign
D Adam Hamilton
| PAC | Given | Checks |
|---|---|---|
| Common Ground PAC | $10K | 2 |
| Blue Hen Federal PAC FEC | $5K | 1 |
| Montanans for Tester FEC | $2K | 2 |
Itemized PAC contributions processed by the FEC through July 3, 2026. 3 PACs in total.
R Roger Marshall
| PAC | Given | Checks |
|---|---|---|
| American Crystal Sugar Company Political Action Committee FEC | $10K | 2 |
| Medical Device Manufacturers Association PAC FEC | $10K | 2 |
| Cox Enterprises PAC (Coxpac) Inc. | $10K | 3 |
| The Hawkeye PAC FEC | $10K | 3 |
| Nebraska Sandhills PAC FEC | $10K | 2 |
| Jobs Opportunity NOW Political Action Committee FEC | $10K | 2 |
| Charter Communications Inc. Political Action Committee | $10K | 2 |
| National Beer Wholesalers Association Political Action Commi FEC | $10K | 3 |
| Kpmg Partners/Principals and Employees PAC | $10K | 3 |
| Air Line Pilots Association International PAC FEC | $10K | 2 |
Itemized PAC contributions processed by the FEC through July 15, 2026. 353 PACs in total.
Primary Sources
- FEC candidate page, Adam Hamilton: fec.gov/data/candidate/S6KS00312
- FEC committee filings, Adam Hamilton principal campaign committee: C00948901
- FEC candidate page, Roger Marshall: fec.gov/data/candidate/S0KS00315
- FEC committee filings, Roger Marshall principal campaign committee: C00576173
- FEC independent expenditures, 2026 cycle: fec.gov independent expenditures
- Race rating: Cook Political Report, October 6, 2026
- Nominees: www.kcur.org