I, Tonya misses in two major catergories --thoughts?

Since 2011, the BP nominees are determined according to the 5% system. Here's how it works, from what I gather: instead of ranking contenders by order of preference, like they do in most other categories, each voter gets to choose only one film to vote for in BP. A film has to be chosen by 5% of the voting body (which I last read is made up of somewhere between 7,000 and 7,500 people) to make the lineup.

That's why the number of nominees varies between 5 and 10 each season. Every year they look at how many films finished above that 5% threshold; if it ever happens that more than 10 movies get the necessary votes, they'll cut off the ones that finished 11th and lower. On the other hand, if less than 5 films pass the 5% minimum, they'll fill out the lineup with the ones that came closest until they get to 5. The latter will probably not happen anytime soon (if ever).

That's why we've seen some out of left field passion picks get nominated this decade, like The Tree of Life, Amour and Beasts of the Southern Wild: the new system is intended to favor the films that have strong, enthusiastic support in the Academy, and not the ones that most voters like but hardly anyone would call the best picture of the year (like The Blind Side). I imagine I, Tonya would make a lot of voters' top 10s, but it didn't get enough #1 love.