Negative publicity from news sources the typical registered Republican had a fairly low opinion of almost certainly helped him greatly in what was arguably the more difficult contest for him to win.
Operation Pied Piper, The DNCs 2016 Strategy From Wikileaks part of Podesta release
1) Force all Republican candidates to lock themselves into extreme conservative positions that will hurt them in a general election;
2) Undermine any credibility/trust Republican presidential candidates have to make inroads to our coalition or independents;
3) Muddy the waters on any potential attack lodged against HRC.
Pied Piper Candidates
Ted Cruz
Donald Trump
Ben Carson
https://wikileaks.org/podesta-emails/emailid/1120.
see the attachment with email for the Strategy.