Breaking the Filibuster
The Huffington Post is tracking where Democratic senators stand on filibuster reform — specifically, the "talking filibuster," which would require senators to participate in debate in order to block legislation. If every Republican senator votes against the legislation, 51 Democratic senators — or 50 plus Vice President Joe Biden breaking the tie — will be needed to pass the bill.
Last updated: Friday, Dec. 28, 2012 5:33 PM EST
  
  51 Yes / Leaning Yes
Wisconsin
         
        Baldwin
      Alaska
         
        Begich
      Colorado
         
        Bennet
      Connecticut
         
        Blumenthal
      California
         
        Boxer
      Ohio
         
        Brown
      Washington
         
        Cantwell
      Maryland
         
        Cardin
      Delaware
         
        Carper
      Pennsylvania
         
        Casey
      Delaware
         
        Coons
      Illinois
         
        Durbin
      California
         
        Feinstein
      Minnesota
         
        Franken
      New York
         
        Gillibrand
      North Carolina
         
        Hagan
      Iowa
         
        Harkin
      New Mexico
         
        Heinrich
      North Dakota
         
        Heitkamp
      Hawaii
         
        Hirono
      South Dakota
         
        Johnson
      Virginia
         
        Kaine
      Massachusetts
         
        Kerry
      Maine
         
        King
      Minnesota
         
        Klobuchar
      Louisiana
         
        Landrieu
      New Jersey
         
        Lautenberg
      Vermont
         
        Leahy
      West Virginia
         
        Manchin
      Missouri
         
        McCaskill
      New Jersey
         
        Menendez
      Oregon
         
        Merkley
      Maryland
         
        Mikulski
      Connecticut
         
        Murphy
      Washington
         
        Murray
      Florida
         
        Nelson
      Rhode Island
         
        Reed
      Nevada
         
        Reid
      West Virginia
         
        Rockefeller
      Vermont
         
        Sanders
      Hawaii
         
        Schatz
      New York
         
        Schumer
      New Hampshire
         
        Shaheen
      Michigan
         
        Stabenow
      Montana
         
        Tester
      Colorado
         
        Udall
      New Mexico
         
        Udall
      Virginia
         
        Warner
      Massachusetts
         
        Warren
      Rhode Island
         
        Whitehouse
      Oregon
         
        Wyden
      4 No / Leaning No
Montana
         
        Baucus
      Indiana
         
        Donnelly
      Michigan
         
        Levin
      Arkansas
         
        Pryor
      By Aaron Bycoffe, Ryan Grim and Andrei Scheinkman.