Who has said that? Her opponents?
Hillary Clinton comes with baggage, (her husband and his affairs), her lack of charisma or whatever it is that draws you to some people and the fact she is a woman in a world where sexism is still an issue. Funny how she was more popular when she was Secretary of State. To get to where she has, you have to be very strong and determined. You have to understand that the appalling things that are thrown at you are not personal. It's sadly politics or in the case of Trump, very much about his state of mind.
What is more concerning is how Trump was endorsed in the first place. Maybe if Clinton is elected, as Trump is losing his endorsements, she will not be blocked by the democrats from improving the lot of poorer members of American society, as Obama has been.