Barack Obama did not blow apart Hillary Clinton’s huge lead during the 2008 Democratic primaries just because he was a landmark African-American candidate, new to the scene, and a skilled campaigner. Even Democrats were all Clintoned out .
By such weariness, I don’t suggest that either of the Clintons is unpopular. Indeed, Americans apparently look fondly back on the high-growth 1990s as the continuation of the Reagan-Bush boom years, and a time when Democrats and Republicans finally fixed budget deficits. (Note well that when Obama went back to the Clinton-era tax rates for the more affluent, the deficit dipped, but certainly did not approach the balanced budget that was once achieved by spending discipline under the Clinton-Gingrich compromise.)
The problem instead is Hillary Clinton herself . She is not a very good speaker, and is prone to shrill outbursts and occasional chortling. She has a bad habit of committing serial gaffes (e.g., speaking too candidly), and what she says on Monday is often contradicted by her rantings on Tuesday. She seems cheap and obsessed with raking in free stuff. When Bill steps in to correct her mistakes, either sloppily or out of some strange psychological spite, he usually makes things even worse. We saw that often in 2008  and are seeing it again now. But aside from the cosmetics of her political style, the Clintons are faced with two fundamental obstacles in 2016.