The reason is, despite all the turmoil in the Trump campaign, Clinton has not been able to solve her biggest problem, which is that people don’t trust her. Only 11 percent of voters in a recent NBC News/Survey Monkey poll think Clinton is “honest and trustworthy.” Each news cycle seems to bring new grounds to doubt her integrity.

This week, the Associated Press reported that half the people outside of government who met with Clinton as secretary of state donated to the Clinton family charity. Also, a judge ordered the State Department to fast-track a review of 15,000 previously undisclosed e-mails the FBI discovered during an investigation of Clinton’s e-mail server. Both stories contradict what Clinton has told the public: that there is no connection between her work as secretary of state and the Clinton Foundation, and that she turned over all her work-related e-mails to the State Department in 2014.

No wonder leading Democratic Senate candidates, like US Representative Ann Kirkpatrick in Arizona and Governor Maggie Hassan in New Hampshire, are reluctant to vouch for Clinton’s trustworthiness on camera.