Alabama
Open — Tuberville (R) running for governor
D
Everett Wess
DEM
R
Barry Moore
REP · U.S. Representative
No recent public poll logged. · Sabato: Safe R
2026 Senate races
35 races on the November 3, 2026 ballot. Republicans hold 53 seats and Democrats 45, with 2 independents who caucus with Democrats; 51 seats (or 50 plus the Vice President) control the chamber.
Solid R
Alaska
Dan Sullivan (R)
D
Mary Peltola
DEM · Former U.S. Representative
R
Dan SullivanINC
REP · U.S. Senator since 2015
Latest poll: Trafalgar, September 25, 2026: D 46 · R 47 · Sabato: Toss-up
Arkansas
Tom Cotton (R)
D
Hallie Shoffner
DEM
R
Tom CottonINC
REP · U.S. Senator since 2015
No recent public poll logged. · Sabato: Safe R
Colorado
John Hickenlooper (D)
D
John HickenlooperINC
DEM · U.S. Senator; former governor
R
Mark Baisley
REP
No recent public poll logged. · Sabato: Safe D
Delaware
Chris Coons (D)
D
Chris CoonsINC
DEM · U.S. Senator since 2010
R
Michael Katz
REP
No recent public poll logged. · Sabato: Safe D
Florida (special)
Ashley Moody (R), appointed
D
Angie Nixon
DEM · State Representative
R
Ashley MoodyINC
REP · Appointed senator; former Florida Attorney General
Latest poll: Stetson Univ., September 24, 2026: D 40 · R 51 · Sabato: Likely R
Georgia
Jon Ossoff (D)
D
Jon OssoffINC
DEM · U.S. Senator since 2021
R
Mike Collins
REP · U.S. Representative
Latest poll: InsiderAdvantage, September 25, 2026: D 50 · R 42 · Sabato: Likely D
Idaho
Jim Risch (R)
R
Jim RischINC
REP · U.S. Senator since 2009
I
Todd Achilles
IND · Independent; former state legislator
No recent public poll logged. · Sabato: Safe R
Illinois
Open — Dick Durbin (D) retiring
D
Juliana Stratton
DEM · Lieutenant Governor
R
Don Tracy
REP · Former state GOP chair
No recent public poll logged. · Sabato: Safe D
Iowa
Open — Joni Ernst (R) retiring
D
Josh Turek
DEM · State Representative
R
Ashley Hinson
REP · U.S. Representative
Latest poll: InsiderAdvantage, September 26, 2026: D 47 · R 46 · Sabato: Lean D
Kansas
Roger Marshall (R)
D
Adam Hamilton
DEM
R
Roger MarshallINC
REP · U.S. Senator since 2021
Latest poll: Emerson, September 18, 2026: D 45 · R 43 · Sabato: Lean R
Kentucky
Open — Mitch McConnell (R) retiring
D
Charles Booker
DEM · Former state representative
R
Andy Barr
REP · U.S. Representative
No recent public poll logged. · Sabato: Safe R
Louisiana
Bill Cassidy (R) lost primary
D
Jamie Davis
DEM
R
Julia Letlow
REP · U.S. Representative
No recent public poll logged. · Sabato: Safe R
Maine
Susan Collins (R)
D
Troy Jackson
DEM · Former Maine Senate President
R
Susan CollinsINC
REP · U.S. Senator since 1997
Latest poll: InsiderAdvantage, September 26, 2026: D 46 · R 46 · Sabato: Lean D
Massachusetts
Ed Markey (D)
D
Ed MarkeyINC
DEM · U.S. Senator since 2013
R
John Deaton
REP · Attorney
No recent public poll logged. · Sabato: Safe D
Michigan
Open — Gary Peters (D) retiring
D
Abdul El-Sayed
DEM · Physician; former Detroit health director
R
Mike Rogers
REP · Former U.S. Representative
Latest poll: Big Data Poll, September 25, 2026: D 47 · R 42 · Sabato: Lean D
Minnesota
Open — Tina Smith (D) retiring
D
Peggy Flanagan
DEM · Lieutenant Governor
R
Michele Tafoya
REP · Former sports broadcaster
Latest poll: KSTP/SurveyUSA, September 16, 2026: D 42 · R 42 · Sabato: Likely D
Mississippi
Cindy Hyde-Smith (R)
D
Scott Colom
DEM · District Attorney
R
Cindy Hyde-SmithINC
REP · U.S. Senator since 2018
I
Ty Pinkins
IND
No recent public poll logged. · Sabato: Safe R
Montana
Open — Steve Daines (R) retiring
D
Alani Bankhead
DEM
R
Kurt Alme
REP · Former U.S. Attorney
I
Seth Bodnar
IND · Independent; former University of Montana president
Latest poll: Quantus Insights, September 17, 2026: D 23 · R 44 · Sabato: Safe R
Nebraska
Pete Ricketts (R)
R
Pete RickettsINC
REP · U.S. Senator since 2023
I
Dan Osborn
IND · Independent; union leader, no Democrat on ballot
No recent public poll logged. · Sabato: Likely R
New Hampshire
Open — Jeanne Shaheen (D) retiring
D
Chris Pappas
DEM · U.S. Representative
R
John E. Sununu
REP · Former U.S. Senator
Latest poll: Trafalgar, September 27, 2026: D 47 · R 41 · Sabato: Lean D
New Jersey
Cory Booker (D)
D
Cory BookerINC
DEM · U.S. Senator since 2013
R
Justin Murphy
REP
No recent public poll logged. · Sabato: Safe D
New Mexico
Ben Ray Luján (D)
D
Ben Ray LujánINC
DEM · U.S. Senator since 2021
R
Larry Marker
REP
No recent public poll logged. · Sabato: Safe D
North Carolina
Open — Thom Tillis (R) retiring
D
Roy Cooper
DEM · Former Governor
R
Michael Whatley
REP · Former RNC chair
Latest poll: High Point Univ., September 24, 2026: D 50 · R 42 · Sabato: Lean D
Ohio (special)
Jon Husted (R), appointed
D
Sherrod Brown
DEM · Former U.S. Senator
R
Jon HustedINC
REP · Appointed senator; former Lt. Governor
Latest poll: Marist, September 27, 2026: D 51 · R 43 · Sabato: Lean D
Oklahoma
Open — interim Sen. Alan Armstrong (R) not running
D
N'Kiyla Thomas
DEM · Nurse
R
Kevin Hern
REP · U.S. Representative
No recent public poll logged. · Sabato: Safe R
Oregon
Jeff Merkley (D)
D
Jeff MerkleyINC
DEM · U.S. Senator since 2009
R
David Brock Smith
REP · State Senator
No recent public poll logged. · Sabato: Safe D
Rhode Island
Jack Reed (D)
D
Jack ReedINC
DEM · U.S. Senator since 1997
R
Raymond McKay
REP
No recent public poll logged. · Sabato: Safe D
South Carolina
Darline Graham Nordone (R), appointed after Lindsey Graham's death
D
Annie Andrews
DEM · Pediatrician
R
Darline Graham NordoneINC
REP · Appointed senator; ex-commissioner, SC Commission for the Blind
Latest poll: Trafalgar, September 26, 2026: D 42 · R 43 · Sabato: Likely R
South Dakota
Mike Rounds (R)
D
Brian Bengs
DEM
R
Mike RoundsINC
REP · U.S. Senator since 2015
No recent public poll logged. · Sabato: Safe R
Tennessee
Bill Hagerty (R)
D
Marquita Bradshaw
DEM
R
Bill HagertyINC
REP · U.S. Senator since 2021
No recent public poll logged. · Sabato: Safe R
Texas
John Cornyn (R) lost primary
D
James Talarico
DEM · State Representative
R
Ken Paxton
REP · Texas Attorney General
Latest poll: Big Data Poll, September 27, 2026: D 47 · R 45 · Sabato: Lean D
Virginia
Mark Warner (D)
D
Mark WarnerINC
DEM · U.S. Senator since 2009
R
Bert Mizusawa
REP
No recent public poll logged. · Sabato: Safe D
West Virginia
Shelley Moore Capito (R)
D
Rachel Fetty Anderson
DEM
R
Shelley Moore CapitoINC
REP · U.S. Senator since 2015
No recent public poll logged. · Sabato: Safe R
Wyoming
Open — Cynthia Lummis (R) retiring
D
James W. Byrd
DEM
R
Harriet Hageman
REP · U.S. Representative
No recent public poll logged. · Sabato: Safe R