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Class III - Senators Whose Terms of Service Expire in 2023


Class III terms run from the beginning of the 115th Congress on January 3, 2017, to the end of the 117th Congress on January 3, 2023. Senators in Class III were elected to office in the November 2016 general election, unless they took their seat through appointment or special election.

Democrats
Bennet, Michael F. (D-CO)
Blumenthal, Richard (D-CT)
Cortez Masto, Catherine (D-NV)
Duckworth, Tammy (D-IL)
Harris, Kamala D. (D-CA)
Hassan, Margaret Wood (D-NH)
Leahy, Patrick J. (D-VT)
Murray, Patty (D-WA)
Schatz, Brian (D-HI)
Schumer, Charles E. (D-NY)
Van Hollen, Chris (D-MD)
Wyden, Ron (D-OR)
Republicans
Blunt, Roy (R-MO)
Boozman, John (R-AR)
Burr, Richard (R-NC)
Crapo, Mike (R-ID)
Grassley, Chuck (R-IA)
Hoeven, John (R-ND)
Isakson, Johnny (R-GA)
Johnson, Ron (R-WI)
Kennedy, John (R-LA)
Kyl, Jon (R-AZ)
Lankford, James (R-OK)
Lee, Mike (R-UT)
Moran, Jerry (R-KS)
Murkowski, Lisa (R-AK)
Paul, Rand (R-KY)
Portman, Rob (R-OH)
Rubio, Marco (R-FL)
Scott, Tim (R-SC)
Shelby, Richard C. (R-AL)
Thune, John (R-SD)
Toomey, Patrick J. (R-PA)
Young, Todd (R-IN)

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

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