He has an advantage. He is allowed to reinvent himself as holding whatever position he believes is expedient. He was for the Clintons before he was against them. He donated to their Foundation, with more money than many families make in three years. He praised Hillary and said she'd make a great president. He attacked Republicans as an apologist for Bill Clinton. Who is Donald Trump? He is whomever the situation needs, like any opportunist. Character still matters.
http://www.mediaite.com/tv/in-2008-trump-dismissed-clinton-sex-scandal-as-totally-unimportant/