U.S. Senate Re-election Classes
The U.S. Constitution mandates that the Senate be divided into three classes (I, II, and III). Senators serve six-year terms, and approximately one-third of the Senate stands for re-election every two years, ensuring continuous membership.
Class II
Up for re-election in 2026 (35 Senators)
Tommy Tuberville
Republican - AL
Lisa Murkowski
Republican - AK
Dan Sullivan
Republican - AK
Tom Cotton
Republican - AR
John Hickenlooper
Democrat - CO
Chris Coons
Democrat - DE
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
Markwayne Mullin
Republican - OK
Jeff Merkley
Democrat - OR
Jack Reed
Democrat - RI
Lindsey Graham
Republican - SC
Tim Scott
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
Class III
Up for re-election in 2028 (32 Senators)
Katie Britt
Republican - AL
Mark Kelly
Democrat - AZ
John Boozman
Republican - AR
Alex Padilla
Democrat - CA
Michael Bennet
Democrat - CO
Richard Blumenthal
Democrat - CT
Ashley Moody
Republican - FL
Raphael Warnock
Democrat - GA
Brian Schatz
Democrat - HI
Mike Crapo
Republican - ID
Tammy Duckworth
Democrat - IL
Todd Young
Republican - IN
Chuck Grassley
Republican - IA
Jerry Moran
Republican - KS
Rand Paul
Republican - KY
John Kennedy
Republican - LA
Chris Van Hollen
Democrat - MD
Eric Schmitt
Republican - MO
Catherine Cortez Masto
Democrat - NV
Maggie Hassan
Democrat - NH
Chuck Schumer
Democrat - NY
Ted Budd
Republican - NC
John Hoeven
Republican - ND
Jon Husted
Republican - OH
James Lankford
Republican - OK
Ron Wyden
Democrat - OR
John Fetterman
Democrat - PA
John Thune
Republican - SD
Mike Lee
Republican - UT
Peter Welch
Democrat - VT
Patty Murray
Democrat - WA
Ron Johnson
Republican - WI
Class I
Up for re-election in 2030 (33 Senators)
Ruben Gallego
Democrat - AZ
Adam Schiff
Democrat - CA
Chris Murphy
Democrat - CT
Lisa Blunt Rochester
Democrat - DE
Rick Scott
Republican - FL
Mazie Hirono
Democrat - HI
Jim Banks
Republican - IN
Angus King
Independent - ME
Angela Alsobrooks
Democrat - MD
Elizabeth Warren
Democrat - MA
Elissa Slotkin
Democrat - MI
Amy Klobuchar
Democrat - MN
Roger Wicker
Republican - MS
Josh Hawley
Republican - MO
Tim Sheehy
Republican - MT
Deb Fischer
Republican - NE
Jacky Rosen
Democrat - NV
Andy Kim
Democrat - NJ
Martin Heinrich
Democrat - NM
Kirsten Gillibrand
Democrat - NY
Kevin Cramer
Republican - ND
Bernie Moreno
Republican - OH
David McCormick
Republican - PA
Sheldon Whitehouse
Democrat - RI
Marsha Blackburn
Republican - TN
Ted Cruz
Republican - TX
John Curtis
Republican - UT
Bernie Sanders
Independent - VT
Tim Kaine
Democrat - VA
Maria Cantwell
Democrat - WA
Jim Justice
Republican - WV
Tammy Baldwin
Democrat - WI
John Barrasso
Republican - WY