Jonathan Chait says — and I quote him because this is my view too — that the allegations of dishonesty against Hillary Clinton are minor and often misreported. There are dozens of unethical charges against Mr. Trump but with some voters, the big things he's done can be ignored while the minor things she's done are disqualifying.
Some of this is just good ol' "it's not a crime when my guy does it." And I do have one acquaintance who wants Hillary jailed and maybe executed, cannot rationally explain her supposed crimes, and who convinces everyone around him that he has a deep emotional problem with powerful women. But that doesn't explain all of the antipathy towards her we see. Here — let me quote the first paragraph of Chait's latest column…
In the last NBC/Wall Street Journal poll, voters judged Donald Trump to be more honest than Hillary Clinton by a ten-point margin. It is a finding that boggles the mind. Americans deem Clinton less honest and trustworthy than a man who lies in public about opponents in both parties with a frequency and brazenness unsurpassed in national politics, who has broken precedent by refusing to disclose his tax returns, who routinely refused to pay contractors for services rendered, who abused a charitable foundation for personal and political gain, who once boasted in a best-selling book about his habit of lying, and who is currently facing trial for bilking thousands of victims in a massive fraud.
You can read the rest of it here. I do think that a lot of people make a gut-level (as opposed to rational) decision about who they'll support in an election and/or just knee-jerk side with the Democrat or the Republican…and then once they do, they believe every bad thing alleged about the opponent and disbelieve (or rationalize) every bad thing alleged about their candidate.
But there has to be more of a reason why "lying about her health" (i.e., waiting for a day or two to disclose she had pneumonia) bothers some people who weren't outraged by Dick Cheney saying, "There is no doubt that Saddam Hussein now has weapons of mass destruction. There is no doubt he is amassing them to use against our friends, against our allies and against us."