No, google isn't censoring for Hillary or anyone else in particular.
Google censors negative results when it detects a name.
I personally have tried it with the search terms Donald Trump, Bernie Madoff, Adolph Hitler and Ted Kaczynski and it censored all of it the moment it picked it up as a name. Even searched it for Hillary Clinton this time and get the exact same type of censoring.
It isn't google censoring for someone, it is google censoring results for everyone.