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Class I - Senators Whose Term of Service Expire in 2031


Class I terms run from the beginning of the 119th Congress on January 3, 2025, to the end of the 121st Congress on January 3, 2031. Senators in Class I were elected to office in the November 2024 general election, unless they took their seat through appointment or special election.

Democrats
Alsobrooks, Angela D. (D-MD)
Baldwin, Tammy (D-WI)
Blunt Rochester, Lisa (D-DE)
Cantwell, Maria (D-WA)
Gallego, Ruben (D-AZ)
Gillibrand, Kirsten E. (D-NY)
Heinrich, Martin (D-NM)
Hirono, Mazie K. (D-HI)
Kaine, Tim (D-VA)
Kim, Andy (D-NJ)
Klobuchar, Amy (D-MN)
Murphy, Christopher (D-CT)
Rosen, Jacky (D-NV)
Schiff, Adam B. (D-CA)
Slotkin, Elissa (D-MI)
Warren, Elizabeth (D-MA)
Whitehouse, Sheldon (D-RI)
Republicans
Banks, Jim (R-IN)
Barrasso, John (R-WY)
Blackburn, Marsha (R-TN)
Cramer, Kevin (R-ND)
Cruz, Ted (R-TX)
Curtis, John R. (R-UT)
Fischer, Deb (R-NE)
Hawley, Josh (R-MO)
Justice, James C. (R-WV)
McCormick, David (R-PA)
Moreno, Bernie (R-OH)
Scott, Rick (R-FL)
Sheehy, Tim (R-MT)
Wicker, Roger F. (R-MS)

Independents
King, Angus S., Jr. (I-ME)
Sanders, Bernard (I-VT)

Article I, section 3 of the U.S. Constitution mandates the Senate's class structure.

Amendment XVII (1913) provides for direct election of Senators.