I submitted this as its own post, but it didn't get much traction, so I'll link it here as well.
This paper argues that the 2016 primaries were hacked based on the fact that (among other arguements):
There was consistent discrepencies between paper and machine voting results, favoring Clinton and against Trump.
Clinton and Trump support was corralated with precinct size
Demographics are not sufficent to explain the above observations.
I have not verified the accuracy of this analysis, or found other commentary on it.