Every class-2 Senate race, sorted by challenger fundraising as a share of the incumbent's war chest. 50%+ challenger ratio means the seat is being meaningfully contested at the money level. Retiring incumbents sort to the top because their seats are open regardless of the dollar math.
Caveat: fundraising momentum isn't outcome — incumbents win 90%+ of contested races even when outraised. This board is about attention, not prediction.
| State | Incumbent | Inc. raised | Challengers | Top challenger | Compete % |
|---|---|---|---|---|---|
| TX Texas | John Cornyn(R) Nominees setTalarico (D) vs Paxton (R) R runoff: Paxton 63.8% def. Cornyn (inc.) · D primary: Talarico 52.4% def. Crockett | — | 5 | James Talarico D · $40M | 999% |
| SC South Carolina | Darline Graham(R) Nominees setAndrews (D) vs Graham (R) R primary: Graham def. Cowen, Herrmann, Lynch, Mitchell, Dismukes · D primary: Andrews 61.5% def. Brown, Freeman | — | 2 | Annie Andrews D · $6.5M | 999% |
| LA Louisiana | Bill Cassidy(R) | $6.7M | 12 | John Fleming R · $11M | 273% |
| MA Massachusetts | Edward J. Markey(D) | $3.8M | 7 | Seth Moulton D · $4.3M | 155% |
| AK Alaska | Dan Sullivan(R) | $6.5M | 2 | Mary Peltola D · $8.7M | 133% |
| ME Maine | Susan M. Collins(R) Nominees setPlatner (D) vs Collins (R) | $10M | 3 | Graham Platner D · $12M | 115% |
| MI Michigan | Gary C. Peters(D) Retiring | $201K | 6 | Haley Stevens D · $8.9M | OPEN |
| MN Minnesota | Tina Smith(D) Retiring R primary: Tafoya 52.6% def. Schwarze, White | $49K | 4 | Angie Craig D · $9.3M | OPEN |
| IL Illinois | Richard J. Durbin(D) Retiring Nominees setStratton (D) vs Tracy (R) D primary: Stratton 40.4% def. Krishnamoorthi, Kelly, Ryan · R primary: Tracy 40% def. Evans, Chlebek, Capparelli, Long, Tillman | — | 4 | Juliana Stratton D · $4.8M | OPEN |
| MT Montana | Steve Daines(R) Retiring Nominees setBankhead (D) vs Alme (R) D primary: Bankhead 43.7% def. Neill, Blackwolf, Kehoe · R primary: Alme 76.2% def. Calhoun, Walkingchild | — | 4 | Seth Bodnar I · $1.4M | OPEN |
| IA Iowa | Joni Ernst(R) Retiring Nominees setTurek (D) vs Arenholz (R) R primary: Arenholz 73.9% def. Carlin · D primary: Turek 62.6% def. Wahls | — | 3 | Ashley Hinson Arenholz R · $7.3M | OPEN |
| KY Kentucky | Mitch McConnell(R) Retiring Nominees setBooker (D) vs Barr (R) R primary: Barr 60.5% def. Cameron | — | 3 | Garland Andy Barr R · $8.0M | OPEN |
| NC North Carolina | Thomas Tillis(R) Retiring Nominees setCooper (D) vs Whatley (R) R primary: Whatley 64.6% def. Brown, Johnson, Morrow | — | 3 | Roy Cooper D · $27M | OPEN |
| OK Oklahoma | Alan Armstrong(R) Retiring Nominees setThomas (D) vs Hern (R) D runoff: Thomas 61.2% def. Priest | — | 3 | Kevin Hern R · $8.3M | OPEN |
| AL Alabama | Tommy Tuberville(R) Retiring Nominees setWess (D) vs Moore (R) R runoff: Moore 60% def. Hudson · D runoff: Wess 54.6% def. Larriett | — | 2 | Felix Barry Moore R · $2.2M | OPEN |
| NH New Hampshire | Jeanne Shaheen(D) Retiring Nominees setPappas (D) vs Sununu (R) D primary: Pappas def. Manzur · R primary: Sununu 69% def. Brown | — | 2 | Chris Pappas D · $9.9M | OPEN |
| WY Wyoming | Cynthia M. Lummis(R) Retiring Nominees setByrd (D) vs Hageman (R) D primary: Byrd 79.3% def. Benavidez · R primary: Hageman 62.7% def. Mead | — | 2 | Harriet Hageman R · $1.6M | OPEN |
| NE Nebraska | Pete Ricketts(R) Nominees setBurbank (D) vs Ricketts (R) R primary: Ricketts 81.5% def. Axtell Schultz · D primary: Burbank 89.5% def. Forbes | $4.9M | 2 | Dan Osborn I · $3.9M | 79% |
| MS Mississippi | Cindy Hyde-Smith(R) Nominees setColom (D) vs Hyde-smith (R) R primary: Hyde-smith 80.8% def. Adlakha · D primary: Colom 72.9% def. Till, Littell | $3.4M | 2 | Scott Colom D · $1.6M | 50% |
| SD South Dakota | Mike Rounds(R) Nominees setBeaudion (D) vs Rounds (R) R primary: Rounds 75.8% def. Mcneal | $2.4M | 2 | Brian Bengs I · $565K | 31% |
| AR Arkansas | Tom Cotton(R) Nominees setShoffner (D) vs Cotton (R) R primary: Cotton 81.6% def. Ashby, Little · D primary: Shoffner 78.3% def. Dunbar | $5.4M | 2 | Hallie Shoffner D · $1.6M | 29% |
| ID Idaho | James E. Risch(R) Nominees setRoth (D) vs Risch (R) R primary: Risch def. Evans, Lave, Roy · D primary: Roth 61.9% def. Bonds | $2.7M | 2 | Todd Baker Achilles I · $413K | 15% |
| GA Georgia | Jon Ossoff(D) Nominees setOssoff (D) vs Collins (R) R runoff: Collins 55% def. Dooley | $57M | 1 | Michael Collins R · $4.3M | 8% |
| CO Colorado | John W. Hickenlooper(D) Nominees setHickenlooper (D) vs Baisley (R) D primary: Hickenlooper 57% def. Gonzales | $6.8M | 4 | Robert Chew ? · $150K | 5% |
| DE Delaware | Christopher A. Coons(D) | $3.0M | 4 | John Shulli R · $101K | 5% |
| RI Rhode Island | Jack Reed(D) Nominees setReed (D) vs Mckay (R) D primary: Reed 76% def. Burbridge, Munoz | $2.6M | 2 | Raymond Tyler McKay R · $140K | 5% |
| OR Oregon | Jeff Merkley(D) Nominees setMerkley (D) vs Smith (R) R primary: Smith 29.5% def. Perkins, Mcalmond | $3.8M | 1 | David Brock Smith R · $24K | 1% |
| VA Virginia | Mark R. Warner(D) Nominees setWarner (D) vs Mizusawa (R) R primary: Mizusawa 51% def. Williams, Farington | $15M | 1 | Bert Mizusawa R · $192K | 1% |
| WV West Virginia | Shelley Moore Capito(R) Nominees setFetty Anderson (D) vs Capito (R) R primary: Capito 66.5% def. Willis · D primary: Fetty Anderson 33.2% def. Kessler, Shrewsbury, Phillips | $3.9M | 1 | Rachel Lee Fetty Anderson D · $22K | 1% |
| TN Tennessee | Bill Hagerty(R) Nominees setBradshaw (D) vs Hagerty (R) D primary: Bradshaw 54.8% def. Brewer, Mccants | $5.9M | 3 | No itemized fundraising yet | 0% |
| NJ New Jersey | Cory A. Booker(D) Nominees setBooker (D) vs Murphy (R) R primary: Murphy 33.3% def. Tabor, Zdan, Lebovics | $17M | 2 | Justin Michael Llm Murphy R · $10K | 0% |
| KS Kansas | Roger Marshall(R) Nominees setHamilton (D) vs Marshall (R) | $3.3M | 1 | No itemized fundraising yet | 0% |
| NM New Mexico | Ben Ray Luján(D) Nominees setLujan (D) vs Marker (R) D primary: Lujan 83.7% def. Dodson | $4.7M | 1 | Larry Marker R · $17K | 0% |