MAJORITY

• 161Michael Bennet

  [D] CO, United States

  Began 01/22/2009
• 1,017Kent Conrad

  [D] ND, United States
• 281E. Benjamin "Ben" Nelson

  [D] NE, United States
• 561Sherrod Brown

  [D] OH, United States
• 473Amy Klobuchar

  [D] MN, United States
• 701Deborah "Debbie" Ann Stabenow

  [D] MI, United States
• 116Kirsten E. Gillibrand

  [D] NY, United States

  Began 01/27/2009
• 27Kirsten E. Gillibrand

  [D] NY-20, United States
• 351Blanche Lambert Lincoln

  [D] AR, United States

  Ended 01/02/2011

MINORITY

• 582John R. Thune

  [R] SD, United States
• 861Richard "Dick" G. Lugar

  [R] IN, United States
• 485Pat Roberts

  [R] KS, United States
• 14Mike Johanns

  [R] NE, United States
• 264Mike Johanns

  [R] NE, United States
• 1,937Charles "Chuck" E. Grassley

  [R] IA, United States
• 838John Cornyn

  [R] TX, United States