Donald Trump may attract more viewers, but the trajectory of the Hillary Clinton campaign is – by far – the most interesting storyline of this campaign.  Hillary Clinton began the 2016 campaign as she did in 2008: A prohibitive favorite with a vast array of organizational and financial resources. The driving narrative of her campaigns has been that she is an inevitable nominee and an electable candidate. When that wears thin, she finds herself on uncertain ground, unsure of who she is as a candidate, or why her campaign matters.

Her difficulty in connecting with voters is often discussed as a matter of trust, but it is really a question of authenticity. We didn’t trust Bill Clinton but we knew who he was and we liked him despite (or because of?) his faults. Her movement to the left this election cycle (relatively to 2008) is symptomatic, her flip on the Trans-Pacific Partnership a case-in-point. The search for what she need to be to get the position she wants.

Bernie Sanders suffers no such problems. He is authentic, challenging the status quo with a Quixotic campaign. He is likable even if we disagree with his positions because he is genuine. It is nearly impossible to imagine him winning the Democratic nomination, but there is no doubt that he has changed the course of the campaign. Voters, he said, will “contrast my consistency and my willingness to stand up to Wall Street and corporations, big corporations, with the secretary.”

The challenge for Hillary Clinton is to use Bernie Sanders as a foil for demonstrating her own authenticity as a person and a candidate and to establish a narrative for her campaign separate from electability and inevitability.