There was a movement a couple of years ago by conservative and or white male SciFi authors who were fed up with being put into a ghetto in the SciFi community and they decided to use the rules to get more conservative works onto the nomination ballot. The group behind this called themselves the Sad Puppies. They managed to get their nominees in pretty much all the available slots in several categories, ostensibly guaranteeing that a conservative themed work would win. The hugo people responded by refusing to give awards in those categories, proving the point that the hugos are biased against conservatives. This went on for a couple of years, always the same result. It appears based on the slate that the sad puppies might have given up this year as it looks like a lot of global warming progressive stuff written by non-white gays and women, at a glance. Same as it ever was.
http://www.npr.org/2015/08/26/434644645/how-the-sad-puppies-won-by-losing