John T. Molloy came to public attention 40 years ago when he published "Dress For Success," a volume on what men should wear to the office that he based not on his opinions but on 15 years of testing and research, and declared himself "America's first wardrobe engineer." He followed his first book up with "The Women's Dress For Success," "Live for Success," and "Why Men Marry Some Women And Not Others," all, like his first book, based on research and statistical analysis. The titles of his books don't convey the full nature of his half-century of research and testing, which broadly deals with how Americans react to symbols of success and failure in clothing, speech, and manners. He's applied his knowledge to advising political candidates on how to dress and speak.
Hillary Clinton and Donald Trump haven't hired Mr. Molloy (one of them should), but he has some free advice for them anyway. I recommend reading his entire post, which you can find at this link. He says Mr. Trump has made a mistake in referring to his opponent as "Crooked Hillary," because he is turning off large sections of the country that are turned off by New York City rudeness. Here are two snippets of his advice.
First, his advice for Secretary Clinton:
If I were advising Hillary I would tell her the minute Trump called her “Crooked Hillary” to become indignant and walk off the show. Most people particularly in the Midwest and the South would agree with her reaction. The reason I would give her such advice is Trump needs the debates to win, in fact, I’m sure he and his team are counting on them. If Hillary can avoid debating when she has a substantial lead she wins hands down.
And his advice for Mr. Trump:
If on the other hand I were advising Trump I would have him apologize for using such language before the debates started. I would have him say something to the effect it was all right in the primaries but a debate for the presidency should have and will have dignity and decorum and he will refer to his opponent as Mrs. Clinton, Hillary or candidate Clinton. That would force Hillary to debate and give him a shot at the presidency since I believe he is a better debater than Hillary and has all sorts of information about Bill and Hillary that he can use to his advantage.