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Ms. Marcotte, I am truly sorry for the attacks on you, and sorry that you felt compelled to resign from the Edwards campaign. But I have to think that this thing was handled badly by you and by the campaign. Your article makes it clear that you are familiar with the tactics the right uses, and it can't have come as a complete surprise to you that some of the things you had written would be controversial. Did you go over your previous work with the campaign before taking the job? Did you prepare a response to the attacks that were likely to come so that the campaign could come out swinging when they did?
Edwards and his staff should have anticipated this and should have decided whether he was prepared to come out with a strong defense of your right to say whatever you wanted to on your personal blog (as distinct, as you rightly point out, from the campaign blog). If he wasn't, then he shouldn't have hired you. If the campaign didn't know that you had written things that might be used against him by his opponents, then they were simply careless.