Frankly, some liberals don’t think the Clintons are liberal enough for them.
I don't think it is the fact that the Clintons are not liberal enough. They bring a lot of baggage, and seem obsessed with power. The dems love a winner though, and will support her if they think she's the only chance for a winner, even if they find her off-putting. I think 2016 will shape up like 2008. Hillary will look like the shoo-in early on. Someone else will give it a shot. If it looks like he or she has a chance of beating Hillary, then a lot of 'rats will jump ship and follow the challenger. If the challenger can't show enough promise, they'll stick with Hillary.
Well, in politics, they love a winner. They will overlook Hillary’s flaws, if they perceive she can be a winner.
They would rather have a President Hillary than any GOP president.