Not sure who to nominate? There are many lists up:
http://hugo-recommend.livejournal.com/
http://www.writertopia.com/awards/campbell
http://ladybusiness.dreamwidth.org/66250.html
In the world of self-promotion, I must add that many of my nonfiction works are eligible for the Hugo for best related work. I’ve made two of them free for the next short while for anyone who would like to try them:
Winning the Game of Thrones: The Host of Characters and their Agendas
https://www.smashwords.com/books/view/315593
Free with coupon code HM23E or available in paperback with many reviews athttp://www.amazon.com/Winning-Game-Thrones-Characters-Agendas/dp/0615817440
Doctor Who – The What, Where, and How: A Fannish Guide to the TARDIS-Sized Pop Culture Jam
https://www.smashwords.com/books/view/405591
Free with coupon code PU82T or available in paperback with many reviews at
http://www.amazon.com/Doctor-Who-Fannish-TARDIS-Sized-Culture/dp/0615922430
Many thanks for reading!