I thought I’d show, in chart form, what the year-over-year changes are in Hugo Awards nominations, substantially due to the sad puppies (and rabid puppies) voting.
This year, there were almost exactly 10% more Hugo nominations than last year. Last year, there was also a (substantially less successful) sad puppies slate.
The area charts are 2015, and the lines correspond to the Hugo Awards nominations in the same categories for 2014.
Sources: 2014 statistics and 2015 statistics.