The Comey letter. I really think it is important for all to read it.

[andym]

11. The evidence points to the FBI investigation during the Spring time as far more significant

than the primary, at least among the general public. Take a look at the horrid timeline for 2016 in this article:
http://www.cnn.com/2016/10/28/politics/hillary-clinton-email-timeline/#
The drop in Hillary Clinton's favorability tracks the stories:

For example, Hillary took a big hit when when Comey first commented that no charges would be forthcoming in July 5. The primary only mattered to very partisan Democrats, a relatively small number who were paying attention. Here's the evidence for that. Compare her declining favorability with her favorability among Democrats.




There isn't much change in her favorability among Democrats (compare September 2015 with July 2016), but a large decline in her favorability among the general public which basically tracks the negative new coverage of the email server. The number of hyper partisans who cared about the primary may seem a large number if you look at Kos and DU, but are actually very small relative to the Democratic Party in general and especially the voting populace.