I have heard in the past that if you do badly on the first try, and then you retake and do badly again--that this can negatively impact your application. (But have no fear, because this is the situation that I am in.) I do not think that this should deter you from attempting to retake it, however. If you do find yourself in the same situation as me--I have just been very clear with all the schools that I apply to that while my GRE is not great, there are other things about me that I try to emphasize to make up for it (leadership involvement, great letters of reccomendation, interview skills, etc.) So far, while I still have not received an acceptance letter, I feel that I have gotten back much positive feedback. Hope this is helpful.
