If you vote Democrat why wouldn't you be a registered Democrat. All this 'unaffiliated' and "independent" designation is really just posturing--pretending you have choices where you really don't. For what policy or reason would any "Democratic leaning independent" vote either Republican or for a Republican? What do these people say to themselves? I don't want to register as a Democrat because I sometimes like to vote for fascism and fascists ?  
The worst Clinton haters have on her is that she voted for the Iraq War resolution? She gave her reasons at the time and in hindsight has said she regrets it. 
http://www.slate.com/articles/news_and_politics/war_stories/2016/02/hillary_clinton_told_the_truth_about_her_iraq_war_vote.html
Sure she's a capable liar--she's a politician who's been attacked by Republicans for years--that's a necessary skill and I actually admire it. Like Krugman said, people unfairly hold her to a higher standard because she's a woman. It's idiotic but predictable.