Because he wouldn't have a chance as a Republican?
From Bloomberg: "Hagel Says He Would Consider Presidential Run as an Independent."
- An independent bid ``is possible,'' Hagel, 60, said in an interview with Bloomberg Television's ``Political Capital with Al Hunt,'' scheduled to air today. ``I don't ever foreclose any options.'' He will decide in the next few months whether to run for a third Senate term, pursue the presidency or leave politics altogether, he said.