Alabama - Jeff Sessions (R)
Alaska - Sean Parnell (R)
Arizona - Janet Napolitano (D)
Arkansas - Mike Huckabee (R)
California - Jerry Brown (D)
Colorado - John Hickenlooper (D)
Connecticut - Richard Blumenthal (D)
Delaware - Joe Biden (D)
Florida - Marco Rubio (R)
Georgia - Phil Gingrey (R)
Hawaii - Brian Schatz (D)
Idaho - Raul Labrador (R)
Illinois - Richard Durbin (D)
Indiana - Mike Pence (R)
Iowa - Terry Branstad (R)
Kansas - Tim Huelskamp (R)
Kentucky - Rand Paul (R) - (Although he would really just be better off running for re-election)
Louisiana - Bobby Jindal (R)
Maine - Mike Michaud (D)
Maryland - Martin O'Malley (D)
Massachusetts - Joe Kennedy (D) - (Warren already publicly announced that she isn't running)
Michigan - Mark Schauer (D)
Minnesota - Amy Klobuchar (D) - (Bachmann also might)
Mississippi - Roger Wicker (R)
Missouri - Jay Nixon (D)
Montana - Brian Schweitzer (D) - (Unfortunately)
Nebraska - Chuck Hagel (R)
Nevada - Dean Heller (R) - (Sandoval will most likely run for Senate)
New Hampshire - Kelly Ayotte (R)
New Jersey - Chris Christie (R) - (Unfortunately)
New Mexico - Susana Martinez (R)
New York - Hillary Clinton (D) - (Andrew Cuomo is 2nd followed by Gillibrand and Peter King)
North Carolina - Mark Meadows (R)
North Dakota - Heidi Heitkamp (D)
Ohio - Ed FitzGerald (D) - (This is assuming Kasich goes down of course)
Oklahoma - Markwayne Mullin (R)
Oregon - Ron Wyden (D)
Pennsylvania - Rick Santorum (R)
Rhode Island - Sheldon Whitehouse (D) (Only fitting
)
South Carolina - Nikki Haley (R)
South Dakota - John Thune (R)
Tennessee - Marsha Blackburn (R)
Texas - Ted Cruz (R) - (Rick Perry would be 2nd most likely)
Utah - Mike Lee (R)
Vermont - Bernie Sanders (D)
Virginia - Mark Warner (D)
Washington - James McDermott (D)
West Virginia - Joe Manchin (D) (Again....unfortunately)
Wisconsin - Paul Ryan (R) - (He has a better chance than Scott Walker since Walker might not even be Governor come primary season)
Wyoming - John Barrasso (R)