I think you're right that people paying attention already knew. But there were denials from DWS that she was being unbiased. The same thing happened with the Snowden leaks. Most paying attention knew, but it was still upsetting when the proof came out.
Concerning election fraud, there are separate reports on that. For example the one from Election Justice USA http://www.dailykos.com/story/2016/7/29/1554022/-Election-Ju...