2026 U.S. Senate Elections

Balance of Power Today (100 Seats)

Not on the 2026 ballot: 31 Republican, 32 Democratic, 2 Independent. Seats on the ballot: 22 Republican, 13 Democratic. Full party breakdown →

Open Seats: No Incumbent on the Ballot

Seats whose incumbent is not among the nominees (primary results checked Oct 10, 2026).

Tommy Tuberville

Republican · Alabama

Senator since 2021

Dick Durbin

Democrat · Illinois

Senator since 1997

Joni Ernst

Republican · Iowa

Senator since 2015

Mitch McConnell

Republican · Kentucky

Senator since 1985

Bill Cassidy

Republican · Louisiana

Senator since 2015 · lost the primary

Gary Peters

Democrat · Michigan

Senator since 2015

Tina Smith

Democrat · Minnesota

Senator since 2018

Steve Daines

Republican · Montana

Senator since 2015

Jeanne Shaheen

Democrat · New Hampshire

Senator since 2009

Thom Tillis

Republican · North Carolina

Senator since 2015

Alan Armstrong

Republican · Oklahoma

Senator since 2026

John Cornyn

Republican · Texas

Senator since 2002 · lost the primary

Cynthia Lummis

Republican · Wyoming

Senator since 2021

Special Elections

• Florida (Class III seat): Ashley Moody (Republican) was appointed on January 21, 2025 and holds the seat until the special election on November 3, 2026, which decides who serves the remainder of the term ending January 3, 2029.
• Ohio (Class III seat): Jon Husted (Republican) was appointed on January 21, 2025 and holds the seat until the special election on November 3, 2026, which decides who serves the remainder of the term ending January 3, 2029.

Every Seat on the 2026 Ballot

Click a column to sort. Status and candidates come from primary results (checked Oct 10, 2026); net worth from each candidate’s latest disclosure. Every candidate’s net worth, ranked →

State ▲	Incumbent ↕	Party ↕	Seat ↕	Since ↕	Age on Election Day ↕	Status ↕	Candidates & Est. Net Worth
Alabama	Tommy Tuberville Since 2021 · age 72	Republican	Class II	2021	72	Open seat	Everett Wess (D) $15K – $50K Barry Moore (R) $1M – $6M
Alaska	Dan Sullivan Since 2015 · age 61	Republican	Class II	2015	61	Incumbent running	Mary Peltola (D) $47K – $220K Dan Sullivan (R) $3M – $12M
Arkansas	Tom Cotton Since 2015 · age 49	Republican	Class II	2015	49	Incumbent running	Hallie Shoffner (D) $408K – $3M Tom Cotton (R) $368K – $1M
Colorado	John Hickenlooper Since 2021 · age 74	Democrat	Class II	2021	74	Incumbent running	John Hickenlooper (D) $14M – $63M Mark Baisley (R) $5M – $25M
Delaware	Chris Coons Since 2010 · age 63	Democrat	Class II	2010	63	Incumbent running	Chris Coons (D) $5M – $25M Michael Katz (R) no report
Florida	Ashley Moody Since 2025 · age 51	Republican	Class III Special Appointed	2025	51	Incumbent running	Angie Nixon (D) -$200K – $135K Ashley Moody (R) $3M – $11M
Georgia	Jon Ossoff Since 2021 · age 39	Democrat	Class II	2021	39	Incumbent running	Jon Ossoff (D) $1M – $6M Mike Collins (R) $5M – $27M
Idaho	Jim Risch Since 2009 · age 83	Republican	Class II	2009	83	Incumbent running	Jim Risch (R) $19M – $92M Todd Achilles (I) $698K – $2M
Illinois	Dick Durbin Since 1997 · age 81	Democrat	Class II	1997	81	Open seat	Juliana Stratton (D) $220K – $775K Don Tracy (R) $27M – $64M
Iowa	Joni Ernst Since 2015 · age 56	Republican	Class II	2015	56	Open seat	Josh Turek (D) $52K – $130K Ashley Hinson (R) $2M – $9M
Kansas	Roger Marshall Since 2021 · age 66	Republican	Class II	2021	66	Incumbent running	Adam Hamilton (D) $7M – $20M Roger Marshall (R) $3M – $10M
Kentucky	Mitch McConnell Since 1985 · age 84	Republican	Class II	1985	84	Open seat	Charles Booker (D) -$198K – -$70K Andy Barr (R) $954K – $3M
Louisiana	Bill Cassidy Since 2015 · age 69	Republican	Class II	2015	69	Lost primary	Jamie Davis (D) no report Julia Letlow (R) $333K – $3M
Maine	Susan Collins Since 1997 · age 73	Republican	Class II	1997	73	Incumbent running	Troy Jackson (D) $147K – $430K Susan Collins (R) $4M – $10M
Massachusetts	Ed Markey Since 2013 · age 80	Democrat	Class II	2013	80	Incumbent running	Ed Markey (D) $3M – $10M John Deaton (R) $16M – $68M
Michigan	Gary Peters Since 2015 · age 67	Democrat	Class II	2015	67	Open seat	Abdul El-Sayed (D) $682K – $2M Mike Rogers (R) $7M – $15M
Minnesota	Tina Smith Since 2018 · age 68	Democrat	Class II	2018	68	Open seat	Peggy Flanagan (D) $990K – $3M Michele Tafoya (R) $10M – $38M
Mississippi	Cindy Hyde-Smith Since 2018 · age 67	Republican	Class II	2018	67	Incumbent running	Scott Colom (D) -$3M – $4M Cindy Hyde-Smith (R) $444K – $2M Ty Pinkins (I) -$565K – -$275K
Montana	Steve Daines Since 2015 · age 64	Republican	Class II	2015	64	Open seat	Alani Bankhead (D) $803K – $2M Kurt Alme (R) $2M – $4M Seth Bodnar (I) $5M – $14M
Nebraska	Pete Ricketts Since 2023 · age 62	Republican	Class II	2023	62	Incumbent running	Pete Ricketts (R) $190M – $220M Dan Osborn (I) $236K – $726K
New Hampshire	Jeanne Shaheen Since 2009 · age 79	Democrat	Class II	2009	79	Open seat	Chris Pappas (D) $958K – $7M John E. Sununu (R) $8M – $36M
New Jersey	Cory Booker Since 2013 · age 57	Democrat	Class II	2013	57	Incumbent running	Cory Booker (D) $2M – $4M Justin Murphy (R) -$250K – -$100K
New Mexico	Ben Luján Since 2021 · age 54	Democrat	Class II	2021	54	Incumbent running	Ben Ray Luján (D) $89K – $300K Larry Marker (R) no report
North Carolina	Thom Tillis Since 2015 · age 66	Republican	Class II	2015	66	Open seat	Roy Cooper (D) $4M – $10M Michael Whatley (R) $4M – $12M
Ohio	Jon Husted Since 2025 · age 59	Republican	Class III Special Appointed	2025	59	Incumbent running	Sherrod Brown (D) $497K – $1M Jon Husted (R) $2M – $5M
Oklahoma	Alan Armstrong Since 2026 · age 64	Republican	Class II Appointed	2026	64	Open seat	N'Kiyla Jasmine Thomas (D) no report Kevin Hern (R) $44M – $160M
Oregon	Jeff Merkley Since 2009 · age 70	Democrat	Class II	2009	70	Incumbent running	Jeff Merkley (D) $5M – $16M David Brock Smith (R) $39K – $150K
Rhode Island	Jack Reed Since 1997 · age 76	Democrat	Class II	1997	76	Incumbent running	Jack Reed (D) $69K – $394K Raymond McKay (R) no report
South Carolina	Darline Graham Nordone Since 2026 · age 62	Republican	Class II Appointed	2026	62	Incumbent running	Annie Andrews (D) $2M – $8M Darline Graham Nordone (R) $84K – $260K
South Dakota	Mike Rounds Since 2015 · age 72	Republican	Class II	2015	72	Incumbent running	Mike Rounds (R) $3M – $13M Brian Bengs (I) $484K – $1M
Tennessee	Bill Hagerty Since 2021 · age 67	Republican	Class II	2021	67	Incumbent running	Marquita Bradshaw (D) no report Bill Hagerty (R) $19M – $96M
Texas	John Cornyn Since 2002 · age 74	Republican	Class II	2002	74	Lost primary	James Talarico (D) $67K – $305K Ken Paxton (R) $103K – $22M
Virginia	Mark Warner Since 2009 · age 71	Democrat	Class II	2009	71	Incumbent running	Mark Warner (D) $200M – $250M Bert Mizusawa (R) $2M – $11M
West Virginia	Shelley Capito Since 2015 · age 72	Republican	Class II	2015	72	Incumbent running	Rachel Fetty Anderson (D) $974K – $2M Shelley Moore Capito (R) $3M – $7M
Wyoming	Cynthia Lummis Since 2021 · age 72	Republican	Class II	2021	72	Open seat	James W. Byrd (D) no report Harriet Hageman (R) $2M – $7M