I should've clarified, for the last few years, I've wanted to go to grad school for a policy degree, the "whim" part was applying for Fall 2015 specifically. For some of the schools I'm interested in, I guess I can retake it later in December and just make the deadline, hopefully I can study more. I just don't know if schools "remember" applications so that if I don't get in this year, I won't get in next because of my awful GRE scores this year, if that makes sense.