Bill & Hillary Clinton have never represented the real American left. Neither has Obama. If you look at the true spectrum of US politics, not what is represented in the mainstream news media, they are right of center.

Hillary was one of Bill's main advisers during his administration. She was fine with mass incarceration, NAFTA and the so-called welfare reform bill that kicked poor women off of welfare. She is not likely to push a single-payer health insurance plan. She's quite friendly with corporations, Wall Street and the rich. She is also a well-known interventionist hawk on foreign policy, even more so than Obama. 

Given her history, and that of congressional Democrats, I don't believe she'll do what she is saying she'll do, all those things she is advocating only because the Sanders campaign pushed her into it. Like Obama she knows how to say the words, but I don't believe she means them.