LOL! No, seriously, who are you really? His campaign manager? Some sort of staffer or legislative aide? Because I can't for the life of me imagine some regular joe even attempting to make this argument, the one whereby it's okay to be a liar so long as everyone around you is a liar too. I mean really, was his term-limit promise made to his enemies, or to his constituents? Can he even tell the difference between the two any more, or has he been hanging around the den of iniquity so long that it's incumbent upon him to be the most iniquitous one of all?
I think it was generally understood that his promise was made in the context of others making similar promises. When everyone else around him starts breaking those promises themselves, that changes the context immensely. If you made the promise thinking your enemies would do the same, and they pull the rug out from under you saying "Sucker!", what do you owe them at that point?
-- inquest, on why Tom Tancredo broke his term limits pledge.