Democrats (14)

• Michael Bennet (Colorado)
• Richard Blumenthal (Connecticut)
• Catherine Cortez Masto (Nevada)
• Tammy Duckworth (Illinois)
• Maggie Hassan (New Hampshire)
• Mark Kelly (Arizona)
• Patrick Leahy (Vermont)
• Patty Murray (Washington)
• Alex Padilla (California)
• Brian Schatz (Hawaii)
• Chuck Schumer (New York)
• Chris Van Hollen (Maryland)
• Raphael Warnock (Georgia)
• Ron Wyden (Oregon)

Republicans (20)

• Roy Blunt (Missouri)
• John Boozman (Arkansas)
• Richard Burr (North Carolina) Has announced he will retire at end of term.
• Mike Crapo (Idaho)
• Chuck Grassley (Iowa)
• John Hoeven (North Dakota)
• Ron Johnson (Wisconsin)
• John Kennedy (Louisiana)
• James Lankford (Oklahoma)
• Mike Lee (Utah)
• Jerry Moran (Kansas)
• Lisa Murkowski (Alaska)
• Rand Paul (Kentucky)
• Rob Portman (Ohio) Has announced he will retire at end of term.
• Marco Rubio (Florida)
• Tim Scott (South Carolina)
• Richard Shelby (Alabama) Has announced he will retire at end of term.
• John Thune (South Dakota)
• Patrick Toomey (Pennsylvania) Has announced he will retire at end of term.
• Todd Young (Indiana)