MAJORITY

• 562Benjamin "Ben" L. Cardin

  [D] MD, United States
• 298Jeffery "Jeff" Merkley

  [D] OR, United States

  Ended 03/24/2011
• 614Sheldon Whitehouse

  [D] RI, United States
• 1,032Frank R. Lautenberg

  [D] NJ, United States
• 169Tom Udall

  [D] NM, United States
• 1,310Max Baucus

  [D] MT, United States

  Began 03/24/2011
• 119Kirsten E. Gillibrand

  [D] NY, United States

  Began 03/24/2011

MINORITY

• 1,419Jefferson "Jeff" Sessions

  [R] AL, United States

  Began 03/24/2011
• 724Lamar Alexander

  [R] TN, United States
• 293Michael "Mike" Crapo

  [R] ID, United States
• 374John A. Barrasso

  [R] WY, United States
• 386David Vitter

  [R] LA, United States

  Began 03/24/2011