MAJORITY

• 475Amy Klobuchar

  [D] MN, United States
• 1,422John F. Kerry

  [D] MA, United States
• 1,765Byron L. Dorgan

  [D] ND, United States

  Ended 01/02/2011
• 298Claire McCaskill

  [D] MO, United States
• 169Tom Udall

  [D] NM, United States
• 188Mark R. Warner

  [D] VA, United States
• 187Mark Begich

  [D] AK, United States
• 875John "Jay" D. Rockefeller IV

  [D] WV, United States

MINORITY

• 111George LeMieux

  [R] FL, United States

  Began 09/10/2009
• 204Mel Martinez

  [R] FL, United States
• 405John Ensign

  [R] NV, United States
• 366James "Jim" DeMint

  [R] SC, United States
• 582John R. Thune

  [R] SD, United States
• 692Samuel "Sam" Brownback

  [R] KS, United States
• 14Mike Johanns

  [R] NE, United States
• 264Mike Johanns

  [R] NE, United States
• 1,274Kay Bailey Hutchison

  [R] TX, United States