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State
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Current incumbent
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In office since
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Former Senator
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Alabama
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Katie Britt
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2023, predecessor retired
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Richard Shelby
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Alabama
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Tommy Tuberville
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2021, defeated predecessor
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Doug Jones
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Alaska
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Lisa Murkowski
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2002 (appointed), predecessor elected to state office
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Frank Murkowski
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Alaska
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Dan Sullivan
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2015, defeated predecessor
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Mark Begich
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Arizona
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Mark Kelly
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2020 (special), defeated interim predecessor
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Martha McSally (interim for John McCain)
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Arizona
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Ruben Gallego
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2025, predecessor retired
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Kyrsten Sinema
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Arkansas
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John Boozman
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2011, defeated predecessor
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Blanche Lincoln
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Arkansas
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Tom Cotton
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2015, defeated predecessor
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Mark Pryor
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California
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Adam Schiff
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2024, interim predecessor did not run and resigned early for seniority advantage
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Laphonza Butler (interim for Dianne Feinstein)
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California
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Alex Padilla
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2021 (appointed), predecessor elected to federal office
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Kamala Harris
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Colorado
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Michael Bennet
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2009 (appointed), predecessor appointed to federal office
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Ken Salazar
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Colorado
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John Hickenlooper
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2021, defeated predecessor
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Cory Gardner
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Connecticut
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Richard Blumenthal
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2011, predecessor retired
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Chris Dodd
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Connecticut
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Chris Murphy
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2013, predecessor retired
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Joe Lieberman
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Delaware
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Lisa Blunt Rochester
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2025, predecessor retired
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Tom Carper
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Delaware
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Chris Coons
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2010 (special), interim predecessor did not run
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Ted Kaufman (interim for Joe Biden)
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Florida
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Rick Scott
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2019, defeated predecessor
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Bill Nelson
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Florida
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Ashley Moody
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2025 (appointed), predecessor appointed to federal office
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Marco Rubio
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Georgia
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Raphael Warnock
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2021 (special), defeated interim predecessor
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Kelly Loeffler (interim for Johnny Isakson)
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Georgia
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Jon Ossoff
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2021, defeated predecessor
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David Perdue
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Hawaii
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Brian Schatz
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2012 (appointed), predecessor died in office
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Daniel Inouye
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Hawaii
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Mazie Hirono
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2013, predecessor retired
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Daniel Akaka
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Idaho
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Mike Crapo
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1999, predecessor retired
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Dirk Kempthorne
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Idaho
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Jim Risch
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2009, predecessor retired
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Larry Craig
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Illinois
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Dick Durbin
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1997, predecessor retired
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Paul Simon
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Illinois
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Tammy Duckworth
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2017, defeated predecessor
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Mark Kirk
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Indiana
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Jim Banks
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2025, predecessor elected to state office
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Mike Braun
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Indiana
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Todd Young
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2017, predecessor retired
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Dan Coats
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Iowa
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Chuck Grassley
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1981, defeated predecessor
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John Culver
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Iowa
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Joni Ernst
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2015, predecessor retired
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Tom Harkin
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Kansas
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Roger Marshall
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2021, predecessor retired
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Pat Roberts
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Kansas
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Jerry Moran
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2011, predecessor retired
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Sam Brownback
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Kentucky
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Mitch McConnell
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1985, defeated predecessor
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Walter Huddleston
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Kentucky
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Rand Paul
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2011, predecessor retired
|
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Jim Bunning
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Louisiana
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Bill Cassidy
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2015, defeated predecessor
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Mary Landrieu
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Louisiana
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John Neely Kennedy
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2017, predecessor retired
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David Vitter
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Maine
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Susan Collins
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1997, predecessor retired
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Bill Cohen
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Maine
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Angus King
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2013, predecessor retired
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Olympia Snowe
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Maryland
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Angela Alsobrooks
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2025, predecessor retired
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Ben Cardin
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Maryland
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Chris Van Hollen
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2017, predecessor retired
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Barbara Mikulski
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Massachusetts
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Elizabeth Warren
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2013, defeated predecessor
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Scott Brown
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Massachusetts
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Ed Markey
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2013 (special), predecessor appointed to federal office
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Mo Cowan (interim for John Kerry)
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Michigan
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Elissa Slotkin
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2025, predecessor retired
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Debbie Stabenow
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Michigan
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Gary Peters
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2015, predecessor retired
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Carl Levin
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Minnesota
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Amy Klobuchar
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2007, predecessor retired
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Mark Dayton
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Minnesota
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Tina Smith
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2018 (appointed), predecessor resigned
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Al Franken
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Mississippi
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Cindy Hyde-Smith
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2018 (appointed), predecessor resigned
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Thad Cochran
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Mississippi
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Roger Wicker
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2007 (appointed), predecessor resigned
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Trent Lott
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Missouri
|
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Josh Hawley
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2019, defeated predecessor
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Claire McCaskill
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Missouri
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Eric Schmitt
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2023, predecessor retired
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Roy Blunt
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Montana
|
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Tim Sheehy
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2025, defeated predecessor
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Jon Tester
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Montana
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Steve Daines
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2015, predecessor retired
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John Walsh
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Nebraska
|
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Deb Fischer
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2013, predecessor retired
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Ben Nelson
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Nebraska
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Pete Ricketts
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2023 (appointed), predecessor resigned
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Ben Sasse
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Nevada
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Jacky Rosen
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2019, defeated predecessor
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Dean Heller
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Nevada
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Catherine Cortez Masto
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2017, predecessor retired
|
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Harry Reid
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New Hampshire
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Jeanne Shaheen
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2009, defeated predecessor
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John Sununu
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New Hampshire
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Maggie Hassan
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2017, defeated predecessor
|
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Kelly Ayotte
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New Jersey
|
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Andy Kim
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2024, interim predecessor did not run and resigned early for seniority advantage
|
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George Helmy (interim for Bob Menendez)
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New Jersey
|
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Cory Booker
|
|
2013 (special), interim predecessor did not run
|
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Jeffrey Chiesa (interim for Frank Lautenberg)
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New Mexico
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Ben Ray Luján
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2021, predecessor retired
|
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Tom Udall
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New Mexico
|
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Martin Heinrich
|
|
2013, predecessor retired
|
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Jeff Bingaman
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New York
|
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Chuck Schumer
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|
1999, defeated predecessor
|
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Al D'Amato
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New York
|
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Kirsten Gillibrand
|
|
2009 (appointed), predecessor appointed to federal office
|
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Hillary Clinton
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|
North Carolina
|
|
Ted Budd
|
|
2023, predecessor retired
|
|
Richard Burr
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North Carolina
|
|
Thom Tillis
|
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2015, defeated predecessor
|
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Kay Hagan
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North Dakota
|
|
John Hoeven
|
|
2011, predecessor retired
|
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Byron Dorgan
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North Dakota
|
|
Kevin Cramer
|
|
2019, defeated predecessor
|
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Heidi Heitkamp
|
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Ohio
|
|
Bernie Moreno
|
|
2025, defeated predecessor
|
|
Sherrod Brown
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|
Ohio
|
|
Jon Husted
|
|
2025 (appointed), predecessor elected to federal office
|
|
J.D. Vance
|
|
Oklahoma
|
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Markwayne Mullin
|
|
2023 (special), predecessor retired
|
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Jim Inhofe
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Oklahoma
|
|
James Lankford
|
|
2015, predecessor retired
|
|
Tom Coburn
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|
Oregon
|
|
Ron Wyden
|
|
1996 (special), predecessor resigned
|
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Bob Packwood
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Oregon
|
|
Jeff Merkley
|
|
2009, defeated predecessor
|
|
Gordon Smith
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|
Pennsylvania
|
|
Dave McCormick
|
|
2025, defeated predecessor
|
|
Bob Casey
|
|
Pennsylvania
|
|
John Fetterman
|
|
2023, predecessor retired
|
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Pat Toomey
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Rhode Island
|
|
Jack Reed
|
|
1997, predecessor retired
|
|
Claiborne Pell
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Rhode Island
|
|
Sheldon Whitehouse
|
|
2007, defeated predecessor
|
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Lincoln Chafee
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|
South Carolina
|
|
Lindsey Graham
|
|
2003, predecessor retired
|
|
Strom Thurmond
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South Carolina
|
|
Tim Scott
|
|
2012 (appointed), predecessor resigned
|
|
Jim DeMint
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|
South Dakota
|
|
John Thune
|
|
2005, defeated predecessor
|
|
Tom Daschle
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|
South Dakota
|
|
Mike Rounds
|
|
2015, predecessor retired
|
|
Tim Johnson
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Tennessee
|
|
Bill Hagerty
|
|
2021, predecessor retired
|
|
Lamar Alexander
|
|
Tennessee
|
|
Marsha Blackburn
|
|
2019, predecessor retired
|
|
Bob Corker
|
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Texas
|
|
John Cornyn
|
|
2003, predecessor retired
|
|
Phil Gramm
|
|
Texas
|
|
Ted Cruz
|
|
2013, predecessor retired
|
|
Kay Bailey Hutchison
|
|
Utah
|
|
John Curtis
|
|
2025, predecessor retired
|
|
Mitt Romney
|
|
Utah
|
|
Mike Lee
|
|
2011, predecessor lost primary
|
|
Bob Bennett
|
|
Vermont
|
|
Peter Welch
|
|
2023, predecessor retired
|
|
Patrick Leahy
|
|
Vermont
|
|
Bernie Sanders
|
|
2007, predecessor retired
|
|
Jim Jeffords
|
|
Virginia
|
|
Mark Warner
|
|
2009, defeated predecessor
|
|
John Warner
|
|
Virginia
|
|
Tim Kaine
|
|
2013, predecessor retired
|
|
Jim Webb
|
|
Washington
|
|
Patty Murray
|
|
1993, predecessor retired
|
|
Brock Adams
|
|
Washington
|
|
Maria Cantwell
|
|
2001, defeated predecessor
|
|
Slade Gorton
|
|
West Virginia
|
|
Jim Justice
|
|
2025, predecessor retired
|
|
Joe Manchin
|
|
West Virginia
|
|
Shelley Moore Capito
|
|
2015, predecessor retired
|
|
Jay Rockefeller
|
|
Wisconsin
|
|
Ron Johnson
|
|
2011, defeated predecessor
|
|
Russ Feingold
|
|
Wisconsin
|
|
Tammy Baldwin
|
|
2013, predecessor retired
|
|
Herb Kohl
|
|
Wyoming
|
|
Cynthia Lummis
|
|
2021, predecessor retired
|
|
Mike Enzi
|
|
Wyoming
|
|
John Barrasso
|
|
2007 (appointed), predecessor died in office
|
|
Craig Thomas
|
