A year or two?
I would say a week or two. The race card will be played, the guy will be out and elected or appointed to another government job in months.
All this talk about pardons mystifies me. FR used to be smarter than this. Obama is never going to pardon Nagin. Why would he? Nagin never did anything for Obama, and there’s nothing in it for Obama. Racial solidarity? Please. Obama is only black when it’s convenient to put on a little jive. He’s a pansy muslim marxist, not a race hustler. Ray’s going away for a long time.
If Obama cared about Nagin (or if Nagin had some dirt on Obama) then Holder would never have allowed the case to go to trial. Holder generally doesn't allow black people to be prosecuted unless they have done something to piss off the Obamas.
Obama may still pardon him, but it will not happen until after the elections in November and probably not until Obama is going out the door in 2016.