That could be part of it, but I figure most of the people who are interested in WL already have a problem with HRC. While all those who love her won't change there opinions.
Hmm... depending on your point of view, I guess either of those options could apply to either candidate. We've become way too polarised.
Adjusting your values and convictions is seen as a flaw, so in a sense we have disincentives evolving of thoughts.
[0] http://projects.fivethirtyeight.com/2016-election-forecast/g...