How many U.S. Senate seats are up for election in 2026?

35 seats are on the ballot on Tuesday, November 3, 2026: the 33 Class II seats plus 2 special elections (Florida, Ohio).

When is the 2026 U.S. Senate election?

Election day is Tuesday, November 3, 2026. Winners take office on January 3, 2027 when the new Congress convenes; special-election winners are sworn in once their results are certified.

Which senators are up for re-election in 2026?

The seats on the ballot are currently held by Tommy Tuberville (Republican-AL), Dan Sullivan (Republican-AK), Tom Cotton (Republican-AR), John Hickenlooper (Democrat-CO), Chris Coons (Democrat-DE), Ashley Moody (Republican-FL), Jon Ossoff (Democrat-GA), Jim Risch (Republican-ID), Dick Durbin (Democrat-IL), Joni Ernst (Republican-IA), Roger Marshall (Republican-KS), Mitch McConnell (Republican-KY), Bill Cassidy (Republican-LA), Susan Collins (Republican-ME), Ed Markey (Democrat-MA), Gary Peters (Democrat-MI), Tina Smith (Democrat-MN), Cindy Hyde-Smith (Republican-MS), Steve Daines (Republican-MT), Pete Ricketts (Republican-NE), Jeanne Shaheen (Democrat-NH), Cory Booker (Democrat-NJ), Ben Luján (Democrat-NM), Thom Tillis (Republican-NC), Jon Husted (Republican-OH), Alan Armstrong (Republican-OK), Jeff Merkley (Democrat-OR), Jack Reed (Democrat-RI), Darline Graham Nordone (Republican-SC), Mike Rounds (Republican-SD), Bill Hagerty (Republican-TN), John Cornyn (Republican-TX), Mark Warner (Democrat-VA), Shelley Capito (Republican-WV), Cynthia Lummis (Republican-WY).

Which U.S. Senate seats are open in 2026?

10 seats have no incumbent running, according to FEC candidate filings: Alabama (Tommy Tuberville), Illinois (Dick Durbin), Iowa (Joni Ernst), Kentucky (Mitch McConnell), Michigan (Gary Peters), Minnesota (Tina Smith), Montana (Steve Daines), New Hampshire (Jeanne Shaheen), North Carolina (Thom Tillis), Wyoming (Cynthia Lummis).

2026 U.S. Senate Elections

35 of the 100 Senate seats are on the ballot on Tuesday, November 3, 2026: the 33 Class II seats whose six-year terms end in January 2027, plus 2 special elections to fill seats currently held by appointment. Every incumbent below links to their voting record, net worth and disclosed stock trades.

All cycles 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 2024 2026 2028 2030

Seats on the ballot

33 Class II + 2 special

Held going in

22 Republican · 13 Democrat

Open seats

No incumbent running, per FEC filings

Days until election day

November 3, 2026

Balance of Power Today (100 Seats)

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

Open Seats: Incumbents Not Running

Seats where FEC candidate filings show no incumbent in the race (filings as of Sep 6, 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

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

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 FEC filings as of Sep 6, 2026; candidates are the top three by money raised.

State ▲	Incumbent ↕	Party ↕	Seat ↕	Since ↕	Age on Election Day ↕	Status ↕	Top Candidates (FEC)
Alabama	Tommy Tuberville Since 2021 · age 72	Republican	Class II	2021	72	Open seat	Felix Barry Moore (R) $4M Rodney Walker (R) $2M Jared Hudson (R) $2M
Alaska	Dan Sullivan Since 2015 · age 61	Republican	Class II	2015	61	Incumbent running	Mary Peltola (D) $19M Dan Sullivan (R) $12M incumbent Daniel J Sullivan (R) $19K
Arkansas	Tom Cotton Since 2015 · age 49	Republican	Class II	2015	49	Incumbent running	Thomas Cotton (R) $14M incumbent Hallie Shoffner (D) $2M Jeb Little (R) $93K
Colorado	John Hickenlooper Since 2021 · age 74	Democrat	Class II	2021	74	Incumbent running	John W. Hickenlooper (D) $10M incumbent Bob Chew (OTH) $1M Robert Chew (FWD) $1M
Delaware	Chris Coons Since 2010 · age 63	Democrat	Class II	2010	63	Incumbent running	Christopher A. Coons (D) $7M incumbent Michael S . Katz (R) $159K John Shulli (R) $118K
Florida	Ashley Moody Since 2025 · age 51	Republican	Class III Special Appointed	2025	51	Incumbent running	Alexander Vindman (D) $16M Joshua Joseph Weil (D) $16M Ashley Moody (R) $11M incumbent
Georgia	Jon Ossoff Since 2021 · age 39	Democrat	Class II	2021	39	Incumbent running	T. Jonathan Ossoff (D) $98M incumbent Michael A Jr Collins (R) $7M Earl Leroy Carter (R) $7M
Idaho	Jim Risch Since 2009 · age 83	Republican	Class II	2009	83	Incumbent running	James E . Risch (UNK) $4M incumbent Todd Baker Achilles (I) $692K Denny Lave (R) $171K
Illinois	Dick Durbin Since 1997 · age 81	Democrat	Class II	1997	81	Open seat	S Krishnamoorthi (D) $32M Juliana Stratton (D) $6M Robin Kelly (D) $4M
Iowa	Joni Ernst Since 2015 · age 56	Republican	Class II	2015	56	Open seat	Ashley Hinson Arenholz (R) $10M Joshua Turek (D) $6M Nathan Sage (D) $1M
Kansas	Roger Marshall Since 2021 · age 66	Republican	Class II	2021	66	Incumbent running	Roger W Marshall (R) $6M incumbent Adam Hamilton (D) $4M Sandy Spidel Neumann (D) $411K
Kentucky	Mitch McConnell Since 1985 · age 84	Republican	Class II	1985	84	Open seat	Garland Andy Barr (R) $10M Nate Morris (R) $9M Amy McGrath (D) $2M
Louisiana	Bill Cassidy Since 2015 · age 69	Republican	Class II	2015	69	Incumbent running	William M. Cassidy (R) $14M incumbent John C. Jr. Fleming (R) $12M Julia Letlow (R) $6M
Maine	Susan Collins Since 1997 · age 73	Republican	Class II	1997	73	Incumbent running	Graham Platner (D) $21M Susan M. Collins (R) $19M incumbent Janet Trafton Mills (D) $6M
Massachusetts	Ed Markey Since 2013 · age 80	Democrat	Class II	2013	80	Incumbent running	Edward Sen. Markey (D) $8M incumbent Seth Moulton (D) $6M John Deaton (R) $2M
Michigan	Gary Peters Since 2015 · age 67	Democrat	Class II	2015	67	Open seat	Abdul El-Sayed (D) $15M Haley Stevens (D) $12M Mallory McMorrow (D) $11M
Minnesota	Tina Smith Since 2018 · age 68	Democrat	Class II	2018	68	Open seat	Angie Craig (D) $13M Margaret Flanagan (DFL) $7M Michele Tafoya (R) $5M
Mississippi	Cindy Hyde-Smith Since 2018 · age 67	Republican	Class II	2018	67	Incumbent running	Cindy Hyde-Smith (R) $5M incumbent Scott Colom (D) $2M Sarah Anne Adlakha (R) $566K
Montana	Steve Daines Since 2015 · age 64	Republican	Class II	2015	64	Open seat	Seth Bodnar (I) $3M Kurt Alme (R) $2M Reilly Neill (D) $299K
Nebraska	Pete Ricketts Since 2023 · age 62	Republican	Class II	2023	62	Incumbent running	Pete Ricketts (R) $11M incumbent Dan Osborn (I) $6M Cindy Burbank (DE) $40K
New Hampshire	Jeanne Shaheen Since 2009 · age 79	Democrat	Class II	2009	79	Open seat	Chris Pappas (D) $15M John E Sununu (R) $4M Scott P. Brown (R) $2M
New Jersey	Cory Booker Since 2013 · age 57	Democrat	Class II	2013	57	Incumbent running	Cory A. Booker (D) $34M incumbent Robert Lebovics (R) $178K Alex Zdan (R) $48K
New Mexico	Ben Luján Since 2021 · age 54	Democrat	Class II	2021	54	Incumbent running	Ben Ray Lujan (D) $8M incumbent Larry E Marker (R) $34K
North Carolina	Thom Tillis Since 2015 · age 66	Republican	Class II	2015	66	Open seat	Roy Cooper (D) $35M Michael Whatley (R) $11M Wiley Nickel (D) $3M
Ohio	Jon Husted Since 2025 · age 59	Republican	Class III Special Appointed	2025	59	Incumbent running	Sherrod Brown (D) $39M Jon Husted (R) $14M incumbent Frederick J Ode (D) $5M
Oklahoma	Alan Armstrong Since 2026 · age 64	Republican	Class II Appointed	2026	64	Incumbent running	Kevin Hern (R) $10M Markwayne Mullin (R) $5M incumbent Jim Priest (D) $370K
Oregon	Jeff Merkley Since 2009 · age 70	Democrat	Class II	2009	70	Incumbent running	Jeffrey Alan Merkley (D) $8M incumbent David Brock Smith (R) $121K Jo Rae Perkins (R) $11K
Rhode Island	Jack Reed Since 1997 · age 76	Democrat	Class II	1997	76	Incumbent running	John F. Reed (D) $4M incumbent Raymond Tyler McKay (R) $180K Connor Burbridge (D) $25K
South Carolina	Darline Graham Nordone Since 2026 · age 62	Republican	Class II Appointed	2026	62	Incumbent running	Lindsey O. Graham (R) $22M incumbent Annie Andrews (D) $11M Mark Lynch (R) $6M
South Dakota	Mike Rounds Since 2015 · age 72	Republican	Class II	2015	72	Incumbent running	Mike Rounds (R) $5M incumbent Brian Bengs (I) $782K Julian C Beaudion (D) $228K
Tennessee	Bill Hagerty Since 2021 · age 67	Republican	Class II	2021	67	Incumbent running	Bill Hagerty (R) $16M incumbent David Jr Sutman (I) $9K Maria A Brewer (D) $9K
Texas	John Cornyn Since 2002 · age 74	Republican	Class II	2002	74	Incumbent running	James Talarico (D) $69M John Sen Cornyn (R) $14M incumbent Jasmine Crockett (D) $11M
Virginia	Mark Warner Since 2009 · age 71	Democrat	Class II	2009	71	Incumbent running	Mark Robert Warner (D) $25M incumbent Bert K Mizusawa (R) $419K Kim Farington (R) $148K
West Virginia	Shelley Capito Since 2015 · age 72	Republican	Class II	2015	72	Incumbent running	Shelley Moore Capito (R) $6M incumbent Jonathan Derrick Evans (R) $1M Thomas Edward Ii Willis (R) $642K
Wyoming	Cynthia Lummis Since 2021 · age 72	Republican	Class II	2021	72	Open seat	Cynthia Marie . Lummis (R) $3M incumbent Harriet Hageman (R) $2M Samuel Mead (R) $289K

About this page

Seats, incumbents and results are derived from the Senate's service records (via the congress-legislators dataset): the seats on a year's ballot are the class whose terms end the following January, plus any seat held by appointment pending a special election, and a result is recorded when the winner is sworn in. Incumbent status and candidates for the next election come from FEC candidate filings; a seat is listed as open when the FEC tags its candidates as running for a seat with no incumbent. Election day is the Tuesday after the first Monday in November. The page updates automatically as filings and the roster change; results appear here as winners take office. See every cycle since 1990, the seniority list and the voting analysis.